PatentDe  


Dokumentenidentifikation EP0912810 04.11.2004
EP-Veröffentlichungsnummer 0000912810
Titel VERSCHLUSSSYSTEM MIT SCHLÜSSELFANGEINRICHTUNG
Anmelder International Security Products Inc., Southington, Conn., US
Erfinder EDEN, W., Charles, Plantsville, US
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 69730963
Vertragsstaaten AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LI, NL, PT, SE
Sprache des Dokument EN
EP-Anmeldetag 18.07.1997
EP-Aktenzeichen 979361201
WO-Anmeldetag 18.07.1997
PCT-Aktenzeichen PCT/US97/12671
WO-Veröffentlichungsnummer 0098003754
WO-Veröffentlichungsdatum 29.01.1998
EP-Offenlegungsdatum 06.05.1999
EP date of grant 29.09.2004
Veröffentlichungstag im Patentblatt 04.11.2004
IPC-Hauptklasse E05B 11/06

Beschreibung[en]

The present invention relates to enhancements in the providing of security to areas through which access is afforded by means of a door and, particularly, to increasing the difficulty of obtaining an unauthorized key for operation of a lock installed in such a door. More specifically, this invention is directed to mechanical locking systems and, especially, to a lock which, in combination with an authorized key, provides access control.

Mechanical locks which employ one or more linear arrays of pin tumbler stacks are, of course, well known in the art. The pin tumbler stacks of such locks are radially displaceable, with respect to the axis of rotation of a plug or core, in response to insertion of a key in a keyway provided in the core. The pin tumbler stacks comprise at least an upper or driver pin, which is spring biased toward the axis of core rotation, and a driven or bottom pin. A properly bitted key will cause pin tumbler stack displacement which, typically, causes the interface between the axially aligned driver and bottom pins to be coincident with a shear line defined by the core outer circumference. Thus, a properly bitted key will permit the core, with the bottom pins, to rotate within a shell. Core rotation will, through the action of a cam or tailpiece connected to the core, cause operation of a latch mechanism.

US 4,377,082 discloses a lock which further comprises an auxiliary tumbler which is actuated by means of a movable key bit in the shank of the key.

Locks of the type generally discussed above are known in the art as "cylinder" locks. The most common manner of defeating a cylinder lock consists of "manufacture" of an unauthorized key. It is believed fair to state that it is not possible to ensure against defeat simply by designing an intricate keyway and/or through the use of various arrangements of pin tumbler stacks. Thus, there has been a long-standing desire for a lock which affords increased security and, particularly, a lock which will "trap" any unauthorized key, particularly a partly formed key which is being "patterned" in an attempt to defeat the lock. In addition to key trapping, a high level of security also dictates a unique combination of a lock and key, i.e., a lock system, which affords the lock manufacturer the ability to exercise key control by means of being the sole source of the key portion of the system.

It is the object of the present invention to overcome the above-briefly discussed and other deficiencies and disadvantages of the prior art.

According to a first aspect, the present invention provides a cylinder lock comprising:

  • a shell, said shell having a forward end, a longitudinally spaced rear end and a longitudinal axis extending therebetween, said shell having an interior surface which defines a core-receiving chamber arranged coaxially with respect to said axis, said shell further having at least a first longitudinal row of pin tumbler receiving chambers, said chambers having axes and communicating with said interior surface, said chamber axes and said longitudinal axis cooperating to define a first plane;
  • a core disposed within said core receiving chamber of said shell for rotation about said longitudinal axis, said core including a longitudinally extending keyway having opposite sides, said core also including at least a first row of pin tumbler receiving chambers, said core pin tumbler receiving chambers each having an axis and being axially alignable with an associated one of said shell pin tumbler receiving chambers, said core having a generally cylindrical outer surface which cooperates with said shell to define a first shear line therebetween, said core pin tumbler receiving chambers extending between said keyway and said core outer surface, said core additionally having a cut-out at the longitudinal location of one of said core pin tumbler receiving chambers, said cut-out extending into said core from said cylindrical outer surface thereof on one side of said keyway, said cut-out being in communication with said keyway via an opening in a side of said keyway, said cut-out at least in part defining a recess in said core outer surface at said longitudinal locations, said recess being angularly offset from the axis of said one core pin tumbler receiving chamber, said recess being registrable with a shell pin tumbler receiving chamber by rotation of said core relative to said shell, said recess having a cross-sectional size and shape which is commensurate with the cross-sectional size and shape of the shell pin tumbler receiving chamber at said longitudinal location;
  • a plurality of pin tumblers, said pin tumblers each having at least a bottom pin and a driver pin, the pins of said pin tumblers being in axial alignment when said shell pin receiving chambers are in axial alignment with said core pin tumbler receiving chambers, said pin tumblers each further comprising a spring for biasing said pins in the direction of said keyway whereby said bottom pins may extend into said keyway and one pin of each of said pin tumblers may extend across said shear line to coact with said core and shell to prevent rotation of said core relative to said shell; and
  • a plate disposed in said cut-out in said core, said plate being movable relative to said core between first and second positions, said plate having a first outer surface portion which, in said first position of said plate, is displaced from said shear line and, in said second position of said plate, is disposed at said shear line whereby said plate first outer surface portion selectively defines either a discontinuity in or substantially a continuation of said outer surface of said core, said plate effectively bridging said core outer surface recess when moved to said second position, said plate further having a projection located to extend into said keyway via said opening whereby force to impart movement to said plate may be delivered to said projection from a key inserted in said keyway.

According to a second aspect, the present invention provides a cylinder lock system comprising:

  • a key comprising a bow portion and a blade which longitudinally extends from said bow portion, said blade having a pair of spaced side surfaces which are at least in part substantially parallel and interconnected by a pair of edges extending there between, at least one of said edges being provided with surface irregularities which define the key bitting, said key further comprising a camming projection extending laterally from one of said side surfaces;
  • shell means including a shell having a longitudinal axis and an engagement surface traversing an interior portion thereof, said shell means defining at least a first longitudinal row of receiving chambers;
  • core means mounted within said shell means for rotation about said shell axis, said core means having an outer surface and defining a longitudinally extending keyway, at least a first row of receiving chambers which are alignable with said shell means receiving chambers and a first blind hole which is offset from but alignable with at least one of said shell means receiving chambers, a first shear line being defined between said shell means engagement surface and said outer surface of said core means;
  • a plurality of pin tumbler means reciprocally mounted within said core means and said shell means receiving chambers, each of said pin tumbler means having a bottom pin which is normally biased into said keyway and a driver pin which is normally disposed adjacent to said bottom pin to define a tumbler shear line therebetween, said pin tumbler means normally coacting with said core means and said shell means to prevent rotation of said core means relative to said shell means; and
  • key trapping plate means movably disposed within said shell means for movement between a first position, wherein said plate means permits at least one of said driver pins to cross said first shear line and enter into said blind hole, and a second position wherein said plate means prevents said driver pins from crossing said first shear line;
  • insertion of said key into said keyway resulting in said camming projection moving said plate means from said first position to said second position and resulting in said key blade surface irregularities causing reciprocation of said pin tumbler means such that said tumbler shear lines are in registration with said first shear line to thereby permit rotation of said core means relative to said shell means.

A lock system in accordance with the invention includes a cylinder lock with a core in which, at the longitudinal position of at least one pin tumbler stack, is provided with a cut-out which is generally in the shape of a circular segment. With the lock in the locked state, i.e., prior to rotation of the core relative to the shell, this circular segment will be out of alignment with the pin tumbler stack. The cut-out is in communication with the keyway via an opening provided in a side of the keyway. A plate member or segment is inserted in the cut-out, the plate member being sized and shaped so as to be capable of limited movement within the cut-out and relative to the core, such movement being guided by the internal diameter of the shell. Movement of the plate member may be produced by a unique security feature, namely a camming projection, provided on the side of an authorized key. The camming projection extends through the opening in the keyway side. This camming projection is sized and shaped to protrude outwardly beyond the plane of the side of the blank from which the key was formed and into the circular sector. The plate member, when caused to move along a path defined by the shell internal diameter in response to contact with a camming projection on an authorized key, will function as an extension of the core and will present an edge which generally corresponds to the shear line. Thus, with an authorized key in the keyway, the core will appear to be uninterrupted to the driver pin of a pin tumbler stack at the location of the cut-out. However, in the case of an unauthorized key, core rotation will cause the outer periphery of the plate member to be displaced below the shear line and, in part, to define an opening into which the driver pin will move once the core has been rotated relative to the shell sufficiency to fully register the pin tumbler chamber in the shell with the cut-out in the core. The driver pin will, accordingly, move radially toward the axis of core rotation so as to bridge the shear line and prevent further core rotation in either the clockwise or counter-clockwise direction. The lock will thus be rendered inoperable and the unauthorized key will be trapped in the keyway..

A preferred embodiment of the present invention will now be described by way of example only, and with reference to the accompanying drawings in which:

  • Figure 1 is a side elevation view, parity in section, of a lock in accordance with the present invention;
  • Figures 2a and 2b are, respectively, cross-sectional side elevation views of the lock of Figure 1 depicting an attempt to operate the lock with an unauthorized key, Figure 2a depicting key insertion and Figure 2b, which is taken along line 2b - 2b of Figure 1, depicting partial rotation and key trapping;
  • Figures 3a and 3b are views similar to Figures 2a and 2b but depicting operation of the lock with an authorized key;
  • Figures 4a and 4b are respectively front elevation and rear elevation views of a key blank authorized to operate a lock in accordance with the invention;
  • Figure 5 is a cross-sectional view, taken along line 5 - 5 of Figure 4b, of the key blank of Figures 4a and 4b; and
  • Figures 6a and 6b are perspective views of the key blank of Figures 4a and 4b.

With reference jointly to Figures 1 - 3, a cylinder lock in accordance with the present invention is indicated generally at 10. Lock 10 comprises a core 12 which may be rotated, about an axis of rotation, relative to a shell 14. Shell 14 includes an extension or bible 16. In the disclosed embodiment, a single linear array of pin chambers, such as chamber 18, are provided in bible 16. The pin chambers 18, with the lock in the locked state as depicted in Figures 2a and 3a, are in registration with pin chambers 20 in core 12. In the disclosed embodiment, pin tumbler stacks comprising an upper or driver pin 22 and a driven or bottom pin 24 are provided in the registered pin chambers. The driver pins 22 are resiliently biased, by means of compression springs 26, radially in the direction of the axis of rotation of core 12. A tailpiece or cam, not shown, will be connected to the end of core 12 disposed at the right as the lock is shown in Figure 1. The tailpiece will be coupled to a latch mechanism or the like so that the lock may be employed to selectively prevent and permit access to a space on one side of a door in which the lock is installed.

The lock as described above is of conventional construction. It will thus be understood by those skilled in the art that the configuration and location of the pin chambers and pin tumbler stacks may be varied without departing from the invention. For example, there may be multiple arrays of pin chambers, radially offset from one another, and the stacks may include any number of pins.

Also in accordance with conventional construction, a keyway 28 (see Fig. 2a) is provided in core 12, the keyway defining a plane. In the disclosed embodiment, the axes of the pin chambers 18 lie in this plane. The keyway communicates with the pin chambers 20 in the core and has a unique profile, i.e., cross-section, as chosen by the lock manufacturer. A conventional keyway includes a plurality of wards which, in part, define the keyway cross-section. A key which will operate lock 10, i.e., a key which may be inserted in the keyway, must have a blade with side surfaces cut so as to be complementary with these wards. Thus, starting from a key blank with parallel sides, longitudinal cuts may be made so that the blade cross-section matches the keyway cross-section. Additionally, considering the lock depicted in the drawings as an example, the lock having a single linear array of pin tumbler stacks, one edge of the key blade must also be cut, i.e., bitted, such that, upon insertion of the key into the keyway, contact between the irregular upper edge of the key and the bottom pins will, as depicted in Figures 2 and 3, move the pin tumbler stacks against the bias of the springs 26 so as to place the interface between the driver and bottom pins at the shear line between the core 12 and shell 14. Thus, in a conventional cylinder lock, in order to permit relative rotation between the core and shell, the key blank must be provided with longitudinal cuts on the sides to define a profile which matches the keyway cross-section and a key blank having the correct profile must be cut on an edge in accordance with the lock combination defined by the variable length pins which define the individual pin tumbler stacks.

In accordance with the present invention, at the location of at least one of the pin tumbler stacks, a circular segment is cut out of core 12. This segment is defined by a wall 30 on core 12 which, with the exceptions to be discussed below, is straight and continuous between two points of intersection with the shear line. In the disclosed embodiment, the spacing between keyway 28 and wall 30 increases from a first end of the wall located adjacent the bottom of the keyway to an opposite end of wall 30 which is adjacent the outer end of a pin chamber 20 in core 12. An opening 32 in wall 30 provides communication between the keyway and the space formed by the circular segment cut-out. In the disclosed embodiment, the opening 32 is formed by a semi-circular groove which forms a portion of the keyway profile. Restated, in the region of the circular segment cut-out, the radius of the groove which in part defines the keyway exceeds the thickness of the wall separating the cut-out from the keyway, thus forming an opening 32 with arcuate side walls. The opening 32 is located at the opposite side, when compared to the pin tumbler chamber 20, of a plane which extends through the core axis of rotation and is transverse to the axis of chamber 20.

A movable plate member 34 having a shape which is similar to, but different from, the circular segment cut-out defined by wall 30 is inserted in the cut-out. Plate 34 has a first, straight side 36 which faces wall 30. Side 36 is provided with a cam follower projection 38 which extends into opening 32. Plate 34 also has an arcuate side 40 which extends from a first end of side 36, the radius of side 40 being substantially the same as the radius of core 12. Arcuate side 40 terminates at, i.e. merges with, a second side surface 42, which may be either straight or curved as shown, which extends to the second end of side 36, i.e., the end of side 36 which is disposed above the plane of the top of the keyway as the lock is depicted in Figures 2 and 3. The width of plate 34 is, as may best be seen from Figure 1, less than the diameter of the pin chamber 18 in bible 16. Core 12 is provided with a blind hole or recess 44 which, in part, extends into wall 30. Hole 44 has a size and shape complementary to the lower end of a driver pin 22. The axis of hole 44 intersects the circular segment cut-out. Consequently, plate 34 extends into, and may effectively bridge, blind hole 44. Depending on the position of plate 34, access of pin 22 to hole 44 will either be permitted or blocked. The position of plate 34 is controlled in the manner to be described below.

A key authorized to operate a lock in accordance with the invention is indicated at 46 in Figure 3. The blank from which key 46 was cut is indicated at 48 in Figures 4 and 6. The blade portion of key blank 48, indicated generally at 64, extends from a bow 49 and has a pair of opposite, planar sides 50 and 52 and top and bottom edges 54 and 56. Where key blank 48 deviates from the prior art is in the provision of a camming projection 58 on side 50 of the blade. Camming projection 58 is preferably elongated, as may be seen from Figures 4a and 6a, and has a cross-section which is generally complementary to that of the groove which defines opening 32. A recess 58' is formed in the opposite side of blade 64 in registration with projection 58 as may be seen from Figs. 4, 5 and 6. Recess 58' has a size and shape which is generally complementary to the size and shape of projection 58. Projection 58 is also located below the center line of the blade. Blank 48 will also be provided with longitudinal cuts 60 along the side(s) of the blank as required by the wards in the keyway. A key for operation of lock 10 may be produced by cutting the top edge 54 of blank 48 to provide flats, i.e., the bitting, which will be in registration with the pin tumbler stacks with the key fully inserted in the keyway, these flats being at a "height" so as to displace the individual pin tumbler stacks as appropriate to satisfy the lock combination. A particularly unique feature of key blank 48 resides in the extension of projection 58 beyond the plane of side 50 as best seen from Figures 5 and 6a.

Referring to Figure 2, insertion in keyway 28 of an unauthorized key 66 which satisfies the lock combination save for the camming projection 58 will displace all of the pin tumbler stacks to positions which will permit rotation of core 12 within shell 14. As the core is rotated in the clockwise direction, it will carry the plate member 34. After a relatively small degree of rotation, as depicted in Figure 2b, the plate member will "flop" over so that the side 36 thereof abuts the wall 30, this "flopping" action resulting from either or both of interaction between spring biased driver pin 22 and plate 34 or the influence of gravity. When rotation continues to the point where blind hole 44 is in registration with pin chamber 18, the driver pin 22 will, under the influence of spring 26, be driven into blind hole 44 until it bottoms on the top, i.e., the side 42, of plate member 34. At this point, because driver pin 22 will bridge the shear line, further rotation of the core in either a clockwise or counter-clockwise direction, will be prevented. Additionally, because of the interaction between the immobilized bottom pins and the top edge of the key blade, the unauthorized key 66 will be trapped in the keyway, i.e., will not be removable.

If the above-described trapping action is desired for both the clockwise and counter-clockwise directions of rotation of core 12 from the position of Figures 2a and 3a, a second plate member 34' (not shown) will be provided and a second camming projection will be formed on the side of the key blade oppositely disposed with respect to projection 58.

As may be seen from Figure 3, the insertion of an authorized key in keyway 28 will result in the establishment of contact between camming projection 58 and the projection 38 on plate member 34. This contact will impart clockwise movement, relative to core 12, of the plate member 34, i.e., the projection 38 functions in the manner of a cam follower and, in so doing, drives the plate member 34 with which it is integral. This movement will be guided by the inner diameter of shell 14 and thus plate member 34 will be driven upwardly such that the junction of sides 36 and 42 is in an abutting relationship with the upper end of wall 30. This abutting relationship causes side 42 of the plate member to bridge blind hole 44. Accordingly, when the core 12 is rotated within shell 12, side 42 of plate 34 will initially prevent driver pin 22 from entering blind hole 44 to a significant degree and, as rotation of the core continues to the position shown in Figure 3b, the arcuate side 40 will contact the bottom of driver pin 24 and cam driver pin against the bias of spring 26 so that rotation of the core to the unlocked position may be accomplished.

While a preferred embodiment has been described, various modifications and substitutions may be made thereto without departing from the scope of the invention as set out in the appended claims. Accordingly, it is to be understood that the present invention has been described by way of illustration and not limitation.


Anspruch[de]
  1. Zylinderschloss (10) mit:
    • einer Hülse (14), wobei die Hülse ein vorderes Ende, ein in Längsrichtung in einem Abstand angeordnetes hinteres Ende und eine sich dazwischen erstreckende Längsachse aufweist, wobei die Hülse eine innere Oberfläche aufweist, welche eine Kernaufnahmekammer definiert, die koaxial bezüglich dieser Achse angeordnet ist, wobei die Hülse ferner mindestens eine erste in Längsrichtung angeordnete Reihe von Stiftzuhaltungs-Aufnahmekammern (18) aufweist, wobei diese Kammern Achsen aufweisen und mit der inneren Oberfläche in Verbindung stehen, wobei die Kammerachsen und die Längsachse gemeinsam eine erste Ebene definieren;
    • einem Kern (12), der innerhalb der Kernaufnahmekammer der Hülse zum Drehen um die Längsachse angeordnet ist, wobei der Kern einen Schlüsselkanal (28) beinhaltet, der sich in Längsrichtung erstreckt und gegenüberliegende Seiten aufweist, wobei der Kern ebenfalls mindestens eine erste Reihe von Stiftzuhaltungs-Aufnahmekammern (20) beinhaltet, wobei jede der Kern-Stiftzuhaltungs-Aufnahmekammern eine Achse aufweist und axial zu einer der Hülsen-Stiftzuhaltungs-Aufnahmekammern ausrichtbar ist, die ihr zugeordnet ist, wobei der Kern eine im Wesentlichen zylindrische äußere Oberfläche aufweist, die gemeinsam mit der Hülse zwischen diesen eine erste Scherlinie definiert, wobei sich die Kern-Stiftzuhaltungs-Aufnahmekammern zwischen dem Schlüsselkanal und der äußeren Oberfläche des Kerns erstrecken, wobei der Kern außerdem an der Längsrichtungs-Position einer der Kern-Stiftzuhaltungs-Aufnahmekammern eine Aussparung aufweist, wobei sich die Aussparung auf einer Seite des Schlüsselkanals von der zylindrischen äußeren Oberfläche des Kerns in denselben hinein erstreckt, wobei die Aussparung über eine Öffnung (32) in einer Seite des Schlüsselkanals mit dem Schlüsselkanal in Verbindung steht, wobei die Aussparung zumindest teilweise eine Vertiefung (44) in der äußeren Oberfläche des Kerns an der Längsrichtungs-Position definiert, wobei die Vertiefung gegenüber der Achse der einen Kern-Stiftzuhaltungs-Aufnahmekammer um einen Winkel versetzt ist, wobei die Vertiefung durch Drehen des Kerns relativ zur Hülse an einer Hülsen-Stiftzuhaltungs-Aufnahmekammer ausrichtbar ist, wobei die Vertiefung eine Größe und Form des Querschnitts aufweist, die der Größe und Form des Querschnitts der Hülsen-Stiftzuhaltungs-Aufnahmekammer an dieser Längsrichtungs-Position entspricht;
    • mehreren Stiftzuhaltungen, wobei jede der Stiftzuhaltungen mindestens einen unteren Stift (24) und einen Treibstift (22) aufweist, wobei die Stifte der Stiftzuhaltungen axial aneinander ausgerichtet sind, wenn die Hülsen-Stift-Aufnahmekammern und die Kern-Stiftzuhaltungs-Aufnahmekammern aneinander ausgerichtet sind, wobei jede der Stiftzuhaltungen ferner eine Feder (26) umfasst, mit der die Stifte in Richtung des Schlüsselkanals vorbelastet werden, wobei die unteren Stifte sich in den Schlüsselkanal erstrecken können und einer der Stifte jeder der Stiftzuhaltungen sich über die Scherlinie hinaus erstrecken kann, um mit dem Kern und der Hülse zusammenzuwirken, um eine Drehung des Kerns relativ zur Hülse zu verhindern, und
    • einer Platte (34), die in der Aussparung des Kerns angeordnet ist, wobei die Platte relativ zum Kern zwischen einer ersten und einer zweiten Stellung beweglich ist, wobei die Platte einen ersten äußeren Oberflächenabschnitt aufweist, der in der ersten Stellung der Platte gegenüber der Scherlinie verschoben ist und in der zweiten Stellung der Platte an der Scherlinie angeordnet ist, wobei der erste äußere Oberflächenabschnitt der Platte selektiv entweder eine Diskontinuität in der oder im Wesentlichen eine Fortführung der äußeren Oberfläche des Kerns definiert, wobei die Platte die Vertiefung in der äußeren Oberfläche des Kerns effektiv überbrückt, wenn sie in die zweite Stellung bewegt wurde, wobei die Platte ferner einen Vorsprung (38) aufweist, der so angeordnet ist, dass er sich durch die Öffnung in den Schlüsselkanal erstreckt, wobei von einem Schlüssel, der in den Schlüsselkanal eingeführt wird, Kraft auf den Vorsprung ausübbar ist, um eine Bewegung der Platte zu bewirken.
  2. Schloss (10) nach Anspruch 1, wobei die Aussparung im Kern (12) im Allgemeinen die Form eines Kreissegments aufweist.
  3. Schloss (10) nach Anspruch 2, wobei die Öffnung (32) und die Vertiefung (44) auf einander gegenüberliegenden Seiten einer zweiten Ebene angeordnet sind und die zweite Ebene im Wesentlichen transversal zur ersten Ebene liegt und durch die Längsachse verläuft.
  4. Schloss (10) nach Anspruch 1, wobei die Platte (34) ferner eine zweite äußere Lageroberfläche beinhaltet, die gemeinsam mit der inneren Oberfläche der Hülse die Bewegungen der Platte relativ zum Kern (12) führt.
  5. Schloss (10) nach Anspruch 2, wobei die Platte (34) ferner eine zweite äußere Lageroberfläche beinhaltet, die gemeinsam mit der inneren Oberfläche der Hülse die Bewegungen der Platte relativ zum Kern (12) führt.
  6. Schloss (10) nach Anspruch 5, wobei die Öffnung (32) und die Vertiefung (44) auf einander gegenüberliegenden Seiten einer zweiten Ebene angeordnet sind und die zweite Ebene im Allgemeinen transversal zur ersten Ebene liegt und durch die Längsachse verläuft.
  7. Schloss (10) nach Anspruch 1, wobei sich der Vorsprung (38) der Platte in den Schlüsselkanal (28) erstreckt, wenn sich die Platte (34) in der ersten Stellung befindet, und wobei der Vorsprung wesentlich gegenüber dem Schlüsselkanal verschoben ist, wenn sich die Platte in der zweiten Stellung befindet.
  8. Schloss (10) nach Anspruch 2, wobei sich der Vorsprung (38) der Platte in den Schlüsselkanal (28) erstreckt, wenn sich die Platte (34) in der ersten Stellung befindet, und wobei der Vorsprung wesentlich gegenüber dem Schlüsselkanal verschoben ist, wenn sich die Platte in der zweiten Stellung befindet.
  9. Schloss (10) nach Anspruch 4, wobei sich der Vorsprung (38) der Platte in den Schlüsselkanal (28) erstreckt, wenn sich die Platte (34) in der ersten Stellung befindet, und wobei der Vorsprung wesentlich gegenüber dem Schlüsselkanal verschoben ist, wenn sich die Platte in der zweiten Stellung befindet.
  10. Schloss (10) nach Anspruch 1, wobei die Aussparung im Kern (12) eine Breite aufweist, die kleiner als der Durchmesser der einen Kern-Stiftzuhaltungs-Aufnahmekammer (20) ist, und wobei die Vertiefung (44) in der äußeren Oberfläche des Kerns teilweise ferner durch ein Sackloch definiert ist, das von der Aussparung geschnitten wird.
  11. Schloss (10) nach Anspruch 5, wobei die Aussparung im Kern (12) eine Breite aufweist, die kleiner als der Durchmesser der einen Kern-Stiftzuhaltungs-Aufnahmekammer (20) ist, und wobei die Vertiefung (44) in der äußeren Oberfläche des Kerns teilweise ferner durch ein Sackloch definiert ist, das von der Aussparung geschnitten wird.
  12. Schloss (10) nach Anspruch 11, wobei sich der Vorsprung (38) der Platte in den Schlüsselkanal (28) erstreckt, wenn sich die Platte (34) in der ersten Stellung befindet, und wobei der Vorsprung wesentlich gegenüber dem Schlüsselkanal verschoben ist, wenn sich die Platte in der zweiten Stellung befindet.
  13. Zylinder-Verschlusssystem mit:
    • einem Schlüssel (46) mit einem Griffabschnitt (49) und einem Blatt (64), das sich vom Griffabschnitt aus in Längsrichtung erstreckt, wobei das Blatt ein Paar in einem Abstand zueinander befindlicher seitlicher Oberflächen (50, 52) aufweist, die zumindest teilweise im Wesentlichen parallel sind und über ein Paar Ränder (54, 56), die sich zwischen diesen erstrecken, miteinander verbunden sind, wobei mindestens einer der Ränder mit Oberflächen-Unregelmäßigkeiten versehen ist, welche den Bart des Schlüssels definieren, wobei der Schlüssel ferner einen nockenartigen Vorsprung (58) umfasst, der sich seitlich aus einer der seitlichen Oberflächen erstreckt;
    • einem Hülsenmittel, das eine Hülse (14) beinhaltet, welches eine Längsachse und eine Eingriffsoberfläche aufweist, die einen inneren Abschnitt derselben durchquert, wobei das Hülsenmittel mindestens eine erste in Längsrichtung angeordnete Reihe von Aufnahmekammern (18) definiert;
    • einem Kernmittel (12), das innerhalb des Hülsenmittels angebracht ist, um sich um die Achse des Hülsenmittels zu drehen, wobei das Kernmittel eine äußere Oberfläche aufweist und einen sich in Längsrichtung erstreckenden Schlüsselkanal (28), mindestens eine erste Reihe von Aufnahmekammern (20), die an den Aufnahmekammern des Hülsenmittels ausrichtbar sind, und ein erstes Sackloch (44) definiert, das gegenüber mindestens einer der Aufnahmekammern des Hülsenmittels versetzt, aber an dieser ausrichtbar ist, wobei eine erste Scherlinie zwischen der Eingriffsoberfläche des Hülsenmittels und der äußeren Oberfläche des Kernmittels definiert ist;
    • mehreren Stiftzuhaltungsmitteln, die in gegenüberliegender Form innerhalb der Aufnahmekammern von Kernmittel und Hülsenmittel angebracht sind, wobei jedes der Stiftzuhaltungsmittel einen unteren Stift (24), der normalerweise in den Schlüsselkanal hinein vorgespannt ist, und einen Treibstift (22) aufweist, der normalerweise an den unteren Stift angrenzend angeordnet ist, um zwischen diesen eine Zuhaltungs-Scherlinie zu definieren, wobei das Stiftzuhaltungsmittel normalerweise mit dem Kernmittel und dem Hülsenmittel zusammenwirkt, um das Drehen des Kernmittels relativ zum Hülsenmittel zu verhindern; und
    • einem Schlüsselfangplattenmittel (34), das beweglich innerhalb des Hülsenmittels angeordnet ist und eine Bewegung zwischen einer ersten Stellung, in der dieses Plattenmittel mindestens einem der Treibstifte das Überqueren der ersten Scherlinie und das Eintreten in das Sackloch gestattet, und einer zweiten Stellung ausführen kann, in der das Plattenmittel den Treibstift am Überqueren der ersten Scherlinie hindert;
       wobei das Einführen des Schlüssels in den Schlüsselkanal zur Folge hat, dass der nockenartige Vorsprung das Plattenmittel aus der ersten Stellung in die zweite Stellung bewegt, und zur Folge hat, dass die Unregelmäßigkeiten in der Oberfläche des Schlüsselblattes eine Reaktion des Stiftzuhaltungsmittels derart bewirken, dass die Zuhaltungs-Scherlinien an der ersten Scherlinie ausgerichtet sind und dadurch das Drehen des Kernmittels relativ zum Hülsenmittel gestatten.
  14. Zylinder-Verschlusssystem nach Anspruch 13, wobei die äußere Oberfläche des Kernmittels (12) im Wesentlichen zylindrisch geformt ist, wobei das Kernmittel eine Aussparung definiert, die zumindest teilweise an der einen Aufnahmekammer (18) des Hülsenmittels ausrichtbar ist, und wobei das Plattenmittel (34) beweglich innerhalb der Aussparung angebracht ist.
  15. Zylinder-Verschlusssystem nach Anspruch 13, wobei das Plattenmittel (34) eine Lageroberfläche beinhaltet, die so geformt ist, dass sie im Wesentlichen eine Scherlinien-Erweiterung der äußeren Oberfläche des Kerns (12) bildet, wenn sich das Plattenmittel in der zweiten Stellung befindet, und die nach unterhalb der ersten Scherlinie verschoben ist, wenn sich das Plattenmittel in der ersten Stellung befindet.
  16. Zylinder-Verschlusssystem nach Anspruch 14, wobei das Plattenmittel (34) eine Lageroberfläche beinhaltet, die so geformt ist, dass sie im Wesentlichen eine Scherlinien-Erweiterung der äußeren Oberfläche des Kerns (12) bildet, wenn sich das Plattenmittel in der zweiten Stellung befindet, und die nach unterhalb der ersten Scherlinie verschoben ist, wenn sich das Plattenmittel in der ersten Stellung befindet.
  17. Zylinder-Verschlusssystem nach Anspruch 14, wobei sich die Aussparung in den Schlüsselkanal (28) erstreckt, wobei das Plattenmittel (34) einen Vorsprung (38) beinhaltet, der sich zumindest teilweise in den Schlüsselkanal erstreckt, wenn sich das Plattenmittel in der ersten Stellung befindet, und wobei der Vorsprung des Plattenmittels sich nicht wesentlich in den Schlüsselkanal erstreckt, wenn sich das Plattenmittel in der zweiten Stellung befindet.
  18. Zylinder-Verschlusssystem nach Anspruch 16, wobei sich die Aussparung in den Schlüsselkanal (28) erstreckt, wobei das Plattenmittel (34) einen Vorsprung (38) beinhaltet, der sich zumindest teilweise in den Schlüsselkanal erstreckt, wenn sich das Plattenmittel in der ersten Stellung befindet, und wobei der Vorsprung des Plattenmittels sich nicht wesentlich in den Schlüsselkanal erstreckt, wenn sich das Plattenmittel in der zweiten Stellung befindet.
  19. Zylinder-Verschlusssystem nach Anspruch 17, wobei sich die Aussparung in einem Abschnitt des Schlüsselkanals (28) in denselben erstreckt, der sich bezüglich der Hülsen-Längsachse gegenüber den Aufnahmekammern (20) des Kernmittels befindet.
  20. Zylinder-Verschlusssystem nach Anspruch 18, wobei sich die Aussparung in einem Abschnitt des Schlüsselkanals (28) in denselben erstreckt, der sich bezüglich der Hülsen-Längsachse gegenüber den Aufnahmekammern (20) des Kernmittels befindet.
  21. Zylinder-Verschlusssystem nach Anspruch 13, wobei es sich bei dem Vorsprung (58) des Schlüssels um einen länglichen Vorsprung handelt, der sich entlang der Längsrichtung des Blattes (64) erstreckt.
  22. Zylinder-Verschlusssystem nach Anspruch 14, wobei es sich bei dem Vorsprung (58) des Schlüssels um einen länglichen Vorsprung handelt, der sich entlang der Längsrichtung des Blattes (64) erstreckt.
  23. Zylinder-Verschlusssystem nach Anspruch 15, wobei es sich bei dem Vorsprung (58) des Schlüssels um einen länglichen Vorsprung handelt, der sich entlang der Längsrichtung des Blattes (64) erstreckt.
  24. Zylinder-Verschlusssystem nach Anspruch 17, wobei der Vorsprung (58) des Schlüssels den Vorsprung (38) des Plattenmittels betätigt, um das Plattenmittel (34) aus dessen ersten Stellung in dessen zweite Stellung zu bewegen.
  25. Zylinder-Verschlusssystem nach Anspruch 19, wobei der Vorsprung (58) des Schlüssels den Vorsprung (38) des Plattenmittels betätigt, um das Plattenmittel (34) aus dessen ersten Stellung in dessen zweite Stellung zu bewegen.
  26. Zylinder-Verschlusssystem nach Anspruch 13, wobei sich die seitlichen Oberflächen (50, 52) des Schlüsselblattes wesentlich über die Länge des Blattes (64) erstrecken und ein Paar im Wesentlichen paralleler Ebenen definieren, wobei der Abstand der parallelen Ebenen die maximale Dicke des Blattes definiert, und wobei sich der nockenartige Vorsprung (58) über eine erste der parallelen Ebenen hinaus erstreckt, wobei das Schlüsselblatt ferner eine Vertiefung aufweist, die an dem nockenartigen Vorsprung ausgerichtet ist, wobei sich die Vertiefung in der seitlichen Oberfläche des Blattes befindet, die sich bezüglich der besagten einen seitlichen Oberfläche gegenüber befindet.
Anspruch[en]
  1. A cylinder lock (10) comprising:
    • a shell (14), said shell having a forward end, a longitudinally spaced rear end and a longitudinal axis extending therebetween, said shell having an interior surface which defines a core-receiving chamber arranged coaxially with respect to said axis, said shell further having at least a first longitudinal row of pin tumbler receiving chambers (18), said chambers having axes and communicating with said interior surface, said chamber axes and said longitudinal axis cooperating to define a first plane;
    • a core (12) disposed within said core receiving chamber of said shell for rotation about said longitudinal axis, said core including a longitudinally extending keyway (28) having opposite sides, said core also including at least a first row of pin tumbler receiving chambers (20), said core pin tumbler receiving chambers each having an axis and being axially alignable with an associated one of said shell pin tumbler receiving chambers, said core having a generally cylindrical outer surface which cooperates with said shell to define a first shear line therebetween, said core pin tumbler receiving chambers extending between said keyway and said core outer surface, said core additionally having a cut-out at the longitudinal location of one of said core pin tumbler receiving chambers, said cut-out extending into said core from said cylindrical outer surface thereof on one side of said keyway, said cut-out being in communication with said keyway via an opening (32) in a side of said keyway, said cut-out at least in part defining a recess (44) in said core outer surface at said longitudinal locations, said recess being angularly offset from the axis of said one core pin tumbler receiving chamber, said recess being registrable with a shell pin tumbler receiving chamber by rotation of said core relative to said shell, said recess having a cross-sectional size and shape which is commensurate with the cross-sectional size and shape of the shell pin tumbler receiving chamber at said longitudinal location;
    • a plurality of pin tumblers, said pin tumblers each having at least a bottom pin (24) and a driver pin (22), the pins of said pin tumblers being in axial alignment when said shell pin receiving chambers are in axial alignment with said core pin tumbler receiving chambers, said pin tumblers each further comprising a spring (26) for biasing said pins in the direction of said keyway whereby said bottom pins may extend into said keyway and one pin of each of said pin tumblers may extend across said shear line to coact with said core and shell to prevent rotation of said core relative to said shell; and
    • a plate (34) disposed in said cut-out in said core, said plate being movable relative to said core between first and second positions, said plate having a first outer surface portion which, in said first position of said plate, is displaced from said shear line and, in said second position of said plate, is disposed at said shear line whereby said plate first outer surface portion selectively defines either a discontinuity in or substantially a continuation of said outer surface of said core, said plate effectively bridging said core outer surface recess when moved to said second position, said plate further having a projection (38) located to extend into said keyway via said opening whereby force to impart movement to said plate may be delivered to said projection from a key inserted in said keyway.
  2. A lock (10) as recited in claim 1, wherein said cut-out in said core (12) has generally the shape of a circular segment.
  3. A lock (10) as recited in claim 2, wherein said opening (32) and said recess (44) are located on opposite sides of a second plane, said second plane being generally transverse to said first plane and extending through said longitudinal axis.
  4. A lock (10) as recited in claim 1, wherein said plate (34) further includes a second outer bearing surface which cooperates with said shell interior surface to guide movements of said plate relative to said core (12).
  5. A lock (10) as recited in claim 2, wherein said plate (34) further includes a second outer bearing surface which cooperates with said shell interior surface to guide movements of said plate relative to said core (12).
  6. A lock (10) as recited in claim 5, wherein said opening (32) and said recess (44) are located on opposite sides of a second plane, said second plane being generally transverse to said first plane and extending through said longitudinal axis.
  7. A lock (10) as recited in claim 1, wherein said plate projection (38) extends into said keyway (28) when said plate (34) is in said first position and wherein said projection is substantially displaced from said keyway when said plate is in said second position.
  8. A lock (10) as recited in claim 2, wherein said plate projection (38) extends into said keyway (28) when said plate (34) is in said first position and wherein said projection is substantially displaced from said keyway when said plate is in said second position.
  9. A lock (10) as recited in claim 4, wherein said plate projection (38) extends into said keyway (28) when said plate (34) is in said first position and wherein said projection is substantially displaced from said keyway when said plate is in said second position.
  10. A lock (10) as recited in claim 1 wherein said cut-out in said core (12) has a width which is less than the diameter of said one core pin tumbler receiving chamber (20) and wherein said recess (44) in said core outer surface is in part further defined by a blind hole which is intersected by said cut-out.
  11. A lock (10) as recited in claim 5 wherein said cut-out in said core (12) has a width which is less than the diameter of said one core pin tumbler receiving chamber (20) and wherein said recess (44) in said core outer surface is in part further defined by a blind hole which is intersected by said cut-out.
  12. A lock (10) as recited in claim 11, wherein said plate projection (38) extends into said keyway (28) when said plate (34) is in said first position and wherein said projection is substantially displaced from said keyway when said plate is in said second position.
  13. A cylinder lock system comprising:
    • a key (46) comprising a bow portion (49) and a blade (64) which longitudinally extends from said bow portion, said blade having a pair of spaced side surfaces (50, 52) which are at least in part substantially parallel and interconnected by a pair of edges (54, 56) extending there between, at least one of said edges being provided with surface irregularities which define the key bitting, said key further comprising a camming projection (58) extending laterally from one of said side surfaces;
    • shell means including a shell (14) having a longitudinal axis and an engagement surface traversing an interior portion thereof, said shell means defining at least a first longitudinal row of receiving chambers (18);
    • core means (12) mounted within said shell means for rotation about said shell axis, said core means having an outer surface and defining a longitudinally extending keyway (28), at least a first row of receiving chambers (20) which are alignable with said shell means receiving chambers and a first blind hole (44) which is offset from but alignable with at least one of said shell means receiving chambers, a first shear line being defined between said shell means engagement surface and said outer surface of said core means;
    • a plurality of pin tumbler means reciprocally mounted within said core means and said shell means receiving chambers, each of said pin tumbler means having a bottom pin (24) which is normally biased into said keyway and a driver pin (22) which is normally disposed adjacent to said bottom pin to define a tumbler shear line therebetween, said pin tumbler means normally coacting with said core means and said shell means to prevent rotation of said core means relative to said shell means; and
    • key trapping plate means (34) movably disposed within said shell means for movement between a first position, wherein said plate means permits at least one of said driver pins to cross said first shear line and enter into said blind hole, and a second position wherein said plate means prevents said driver pins from crossing said first shear line;
    • insertion of said key into said keyway resulting in said camming projection moving said plate means from said first position to said second position and resulting in said key blade surface irregularities causing reciprocation of said pin tumbler means such that said tumbler shear lines are in registration with said first shear line to thereby permit rotation of said core means relative to said shell means.
  14. A cylinder lock system as recited in claim 13, wherein said outer surface of said core means (12) is generally cylindrically shaped, wherein said core means defines a cut-out which is at least partially alignable with said one of said shell means receiving chambers (18), and wherein said plate means (34) is movably mounted within said cut-out.
  15. A cylinder lock system as recited in claim 13, wherein said plate means (34) includes a bearing surface which is contoured to generally form a shear line extension of said outer surface of said core (12) when said plate means is in said second position and to be displaced below said first shear line when said plate means is in said first position.
  16. A cylinder lock system as recited in claim 14, wherein said plate means (34) includes a bearing surface which is contoured to generally form a shear line extension of said outer surface of said core (12) when said plate means is in said second position and to be displaced below said first shear line when said plate means is in said first position.
  17. A cylinder lock system as recited in claim 14; wherein said cut-out extends into said keyway (28), wherein said plate means (34) includes a projection (38) which at least partially extends into said keyway when said plate means is in said first position and wherein said plate means projection does not substantially extend into said keyway when said plate means is in said second position.
  18. A cylinder lock system as recited in claim 16, wherein said cut-out extends into said keyway (28), wherein said plate means (34) includes a projection (38) which at least partially extends into said keyway when said plate means is in said first position and wherein said plate means projection does not substantially extend into said keyway when said plate means is in said second position.
  19. A cylinder lock system as recited in claim 17, wherein said cut-out extends into said keyway (28) at a portion thereof which is located opposite said core means receiving chambers (20) with respect to said longitudinal shell axis.
  20. A cylinder lock system as recited in claim 18, wherein said cut-out extends into said keyway (28) at a portion thereof which is located opposite said core means receiving chambers (20) with respect to said longitudinal shell axis.
  21. A cylinder lock system as recited in claim 13, wherein said key projection (58) is an elongated projection which extends along the longitudinal direction of said blade (64).
  22. A cylinder lock system as recited in claim 14, wherein said key projection (58) is an elongated projection which extends along the longitudinal direction of said blade (64).
  23. A cylinder lock system as recited in claim 15, wherein said key projection (58) is an elongated projection which extends along the longitudinal direction of said blade (64).
  24. A cylinder lock system as recited in claim 17, wherein said key projection (58) engages said plate means projection (38) to move said plate means (34) from said first position to said second position.
  25. A cylinder lock system as recited in claim 19, wherein said key projection (58) engages said plate means projection (38) to move said plate means (34) from said first position to said second position.
  26. A cylinder lock system as recited in claim 13, wherein said key blade side surfaces (50, 52) extend substantially the length of said blade (64) and define a pair of substantially parallel planes, the spacing between said parallel planes defining the maximum thickness of said blade, and wherein said camming projection (58) extends beyond a first of said parallel planes, said key blade further having a recess located in registration with said camming projection, said recess being in the side surface of said blade disposed oppositely with respect to said one side surface.
Anspruch[fr]
  1. Serrure à barillet (10) comprenant :
    • un boîtier (14), ledit boîtier ayant une extrémité avant, une extrémité arrière espacée longitudinalement et un axe longitudinal s'étendant entre elles, ledit boîtier ayant une surface intérieure définissant une chambre recevant un rotor disposée coaxialement par rapport audit axe, ledit boîtier comportant en outre au moins une première rangée longitudinale de chambres (18) réceptrices de goupilles, lesdites chambres présentant des axes et débouchant dans ladite surface intérieure, lesdits axes de chambres et ledit axe longitudinal coopérant pour définir un premier plan ;
    • un rotor (12) disposé à l'intérieur de ladite chambre dudit boîtier réceptrice de rotor et monté rotatif autour dudit axe longitudinal, ledit rotor comprenant un logement de clé (28) s'étendant longitudinalement et présentant des côtés opposés, ledit rotor comprenant également au moins une première rangée de chambres (20) réceptrices de goupilles, lesdites chambres du rotor réceptrices de goupilles présentant chacune un axe et pouvant s'aligner axialement avec une chambre associée parmi lesdites chambres du boîtier réceptrices de goupilles, ledit rotor ayant une surface externe de forme générale cylindrique qui coopère avec ledit boîtier pour définir entre eux une première ligne de verrouillage, lesdites chambres du rotor réceptrices de goupilles s'étendant entre ledit logement de clé et ladite surface externe du rotor, ledit rotor présentant de plus un évidement au niveau de l'emplacement longitudinal de l'une desdites chambres du rotor réceptrices de goupilles, ledit évidement s'étendant à l'intérieur dudit rotor à partir de ladite surface externe cylindrique de ce dernier d'un côté dudit logement de clé, ledit évidement étant en communication avec ledit logement de clé au moyen d'une ouverture (32) pratiquée dans un côté dudit logement de clé, ledit évidement définissant au moins en partie une échancrure (44) dans ladite surface externe du rotor au niveau desdits emplacements longitudinaux, ladite échancrure étant décalée angulairement par rapport à l'axe de ladite chambre du rotor réceptrice de goupilles, ladite échancrure étant en concordance avec une chambre du boîtier réceptrice de goupilles par rotation dudit rotor par rapport audit boîtier, ladite échancrure présentant une dimension et une forme transversales comparables aux dimension et forme transversales de la chambre du boîtier réceptrice de goupilles au niveau dudit emplacement longitudinal ;
    • une pluralité de goupilles, lesdites goupilles étant chacune constituée d'au moins un piston (24) et un contre-piston d'entraînement (22), les piston et contre-piston desdites goupilles étant alignés axialement lorsque lesdites chambres du boîtier réceptrices de goupilles sont alignées axialement avec lesdites chambres du rotor réceptrices de goupilles, chacune desdites goupilles comprenant en outre un ressort (26) permettant d'incliner lesdits piston et contre-piston en direction dudit logement de clé, de manière que lesdits pistons peuvent s'étendre à l'intérieur dudit logement de clé et le contre-piston de chacune desdites goupilles peut s'étendre en travers de ladite ligne de verrouillage afin de coopérer avec ledit rotor et ledit boîtier pour empêcher la rotation dudit rotor relativement audit boîtier ; et
    • un linguet (34) disposé dans ledit évidement dudit rotor, ledit linguet pouvant se déplacer par rapport audit rotor entre une première et une seconde positions, ledit linguet présentant une première partie de surface externe qui, dans ladite première position dudit linguet, est décalé de ladite ligne de verrouillage et, dans ladite seconde position dudit linguet, est disposé au niveau de ladite ligne de verrouillage, de sorte que ladite première partie de surface externe du linguet définit de manière sélective soit une discontinuité dans ladite surface externe dudit rotor, soit une continuité réelle de cette dernière, ledit linguet reliant effectivement ladite échancrure de surface externe du rotor lorsqu'elle se déplace dans ladite seconde position, ledit linguet présentant en outre une saillie (38) située de manière à s'étendre dans ledit logement de clé à travers ladite ouverture, de sorte qu'une clé introduite dans ledit logement de clé puisse appliquer à ladite saillie une force permettant de déplacer ledit linguet.
  2. Serrure (10) selon la revendication 1, dans laquelle ledit évidement dudit rotor (12) présente essentiellement la forme d'un segment circulaire.
  3. Serrure (10) selon la revendication 2, dans laquelle ladite ouverture (32) et ladite échancrure (44) sont situées de part et d'autre d'un second plan, ledit second plan étant d'une manière générale transversal audit premier plan et s'étendant le long dudit axe longitudinal.
  4. Serrure (10) selon la revendication 1, dans laquelle ledit linguet (34) comprend en outre une seconde surface externe d'appui qui coopère avec ladite surface interne du boîtier pour guider les déplacements dudit linguet relativement audit rotor (12).
  5. Serrure (10) selon la revendication 2, dans laquelle ledit linguet (34) comprend en outre une seconde surface externe d'appui qui coopère avec ladite surface interne du boîtier pour guider les déplacements dudit linguet relativement audit rotor (12).
  6. Serrure (10) selon la revendication 5, dans laquelle ladite ouverture (32) et ladite échancrure (44) sont situées de part et d'autre d'un second plan, ledit second plan étant d'une manière générale transversal audit premier plan et s'étendant le long dudit axe longitudinal.
  7. Serrure (10) selon la revendication 1, dans laquelle ladite saillie (38) du linguet s'étend à l'intérieur dudit logement de clé (28) lorsque ledit linguet (34) se trouve dans ladite première position et dans laquelle ladite saillie est sensiblement décalée par rapport à ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  8. Serrure (10) selon la revendication 2, dans laquelle ladite saillie (38) du linguet s'étend à l'intérieur dudit logement de clé (28) lorsque ledit linguet (34) se trouve dans ladite première position et dans laquelle ladite saillie est sensiblement décalée par rapport à ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  9. Serrure (10) selon la revendication 4, dans laquelle ladite saillie (38) du linguet s'étend à l'intérieur dudit logement de clé (28) lorsque ledit linguet (34) se trouve dans ladite première position et dans laquelle ladite saillie est sensiblement décalée par rapport à ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  10. Serrure (10) selon la revendication 1, dans laquelle ledit évidement dudit rotor (12) a une largeur qui est inférieure au diamètre de ladite chambre (20) du rotor réceptrice de goupilles, et dans laquelle ladite échancrure (44) pratiquée dans ladite surface externe du rotor est pour partie définie également par un trou aveugle qui s'entrecroise avec ledit évidement.
  11. Serrure (10) selon la revendication 5, dans laquelle ledit évidement dudit rotor (12) a une largeur qui est inférieure au diamètre de ladite chambre (20) du rotor réceptrice de goupilles, et dans laquelle ladite échancrure (44) pratiquée dans ladite surface externe du rotor est pour partie définie également par un trou aveugle qui s'entrecroise avec ledit évidement.
  12. Serrure (10) selon la revendication 11, dans laquelle ladite saillie (38) du linguet s'étend à l'intérieur dudit logement de clé (28) lorsque ledit linguet (34) se trouve dans ladite première position et dans laquelle ladite saillie est sensiblement décalée par rapport à ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  13. Système de serrure à barillet comprenant :
    • une clé (46) comprenant une partie annulaire (49) et une tige (64) qui s'étend longitudinalement à partir de ladite partie annulaire, ladite tige ayant une paire de faces latérales distantes (50, 52) qui sont au moins en partie sensiblement parallèles et sont reliées par une paire de chants (54, 56) s'étendant entre elles, au moins l'un desdits chants étant pourvu d'irrégularités de surface qui définissent les dents de la clé, ladite clé comprenant en outre une came saillante (58) s'étendant latéralement depuis l'une desdites faces latérales ;
    • des moyens enveloppant comprenant un boîtier (14) ayant un axe longitudinal et une surface d'engagement traversant sa partie intérieure, ledit boîtier définissant au moins une première rangée longitudinale de chambres réceptrices (18) ;
    • des moyens formant rotor (12) monté à l'intérieur dudit boîtier de façon à tourner autour dudit axe de boîtier, ledit rotor ayant une surface externe et définissant un logement de clé (28) s'étendant longitudinalement, au moins une première rangée de chambres réceptrices (20) susceptibles d'être alignées avec lesdites chambres réceptrices du boîtier et un premier trou aveugle (44) qui est décalé par rapport à au moins l'une desdites chambres réceptrices du boîtier mais peut être mis en alignement avec elle, une première ligne de verrouillage étant définie entre ladite surface intérieure du boîtier et ladite surface externe dudit rotor ;
    • une pluralité de moyens formant goupilles montées mutuellement à l'intérieur desdites chambres réceptrices dudit rotor et dudit boîtier, chacune desdites goupilles ayant un piston (24) qui est normalement incliné dans ledit logement de clé et un contre-piston (22) qui est normalement disposé de façon contiguë audit piston afin de définir entre eux une ligne de rupture de goupilles, lesdites goupilles coopérant normalement avec ledit rotor et ledit boîtier afin d'empêcher la rotation dudit rotor relativement audit boîtier ; et
    • des moyens de piégeage de clé formant linguet (34) montés mobiles à l'intérieur dudit boîtier de façon à être déplacés entre une première position, dans laquelle ledit linguet permet au moins à l'un desdits contre-pistons de traverser ladite première ligne de verrouillage et de pénétrer dans ledit trou aveugle, et une seconde position dans laquelle ledit linguet empêche lesdits contre-pistons de traverser ladite première ligne de verrouillage ;
    • l'insertion de ladite clé dans ledit logement de clé entraînant le déplacement, au moyen de ladite came saillante, dudit linguet de ladite première position à ladite seconde position, ce qui a pour résultat que lesdites irrégularités de surface de la tige de clé provoquent un mouvement de va-et-vient desdites goupilles tel que lesdites lignes de verrouillage de goupilles coïncident avec ladite première ligne de rupture, afin de permettre ainsi la rotation dudit rotor par rapport audit boîtier.
  14. Système de serrure à barillet selon la revendication 13, dans lequel ladite surface externe dudit rotor (12) est de forme générale cylindrique, dans lequel ledit rotor définit un évidement qui peut au moins être aligné partiellement avec l'une desdites chambres réceptrices (18) du boîtier, et dans lequel ledit linguet (34) est monté de manière amovible à l'intérieur dudit évidement.
  15. Système de serrure à barillet selon la revendication 13, dans lequel ledit linguet (34) présente une surface d'appui dont le profil forme de manière générale une extension de la ligne de verrouillage de ladite surface externe dudit rotor (12) lorsque ledit linguet se trouve dans ladite seconde position, et qui peut être déplacée en dessous de ladite première ligne de verrouillage lorsque ledit linguet se trouve dans ladite première position.
  16. Système de serrure à barillet selon la revendication 14, dans lequel ledit linguet (34) présente une surface d'appui dont le profil forme de manière générale une extension de la ligne de verrouillage de ladite surface externe dudit rotor (12) lorsque ledit linguet se trouve dans ladite seconde position, et qui peut être déplacée en dessous de ladite première ligne de verrouillage lorsque ledit linguet se trouve dans ladite première position.
  17. Système de serrure à barillet selon la revendication 14, dans lequel ledit évidement débouche dans ledit logement de clé (28), dans lequel ledit linguet (34) comprend une saillie (38) qui s'étend au moins partiellement à l'intérieur dudit logement de clé lorsque ladite linguet se trouve dans ladite première position, et dans lequel ladite saillie de linguet ne s'étend pas substantiellement à l'intérieur de ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  18. Système de serrure à barillet selon la revendication 16, dans lequel ledit évidement débouche dans ledit logement de clé (28), dans lequel ledit linguet (34) comprend une saillie (38) qui s'étend au moins partiellement à l'intérieur dudit logement de clé lorsque ledit linguet se trouve dans ladite première position, et dans lequel ladite saillie de linguet ne s'étend pas substantiellement à l'intérieur de ladite rainure lorsque ledit linguet se trouve dans ladite seconde position.
  19. Système de serrure à barillet selon la revendication 17, dans lequel ledit évidement débouche dans ledit logement de clé (28) au niveau d'une partie de ce dernier qui est située à l'opposé desdites chambres réceptrices (20) du rotor par rapport audit axe longitudinal du boîtier.
  20. Système de serrure à barillet selon la revendication 18, dans lequel ledit évidement débouche dans ledit logement de clé (28) au niveau d'une partie de ce dernier qui est située à l'opposé desdites chambres réceptrices (20) du rotor par rapport audit axe longitudinal du boîtier.
  21. Système de serrure à barillet selon la revendication 13, dans lequel ladite came saillante de clé (58) est une saillie oblongue qui s'étend dans le sens longitudinal de ladite tige (64).
  22. Système de serrure à barillet selon la revendication 14, dans lequel ladite came saillante de clé (58) est une saillie oblongue qui s'étend dans le sens longitudinal de ladite tige (64).
  23. Système de serrure à barillet selon la revendication 15, dans lequel ladite came sailliante de clé (58) est une saillie oblongue qui s'étend dans le sens longitudinal de ladite tige (64).
  24. Système de serrure à barillet selon la revendication 17, dans lequel ladite came saillante de clé (58) se met en prise avec ladite saillie (38) du linguet afin de déplacer ledit linguet (34) de ladite première position à ladite seconde position.
  25. Système de serrure à barillet selon la revendication 19, dans lequel ladite came saillante de clé (58) se met en prise avec ladite saillie (38) du linguet afin de déplacer ledit linguet (34) de ladite première position à ladite seconde position.
  26. Système de serrure à barillet selon la revendication 13, dans lequel lesdites faces latérales (50, 52) de la tige de clé s'étendent sensiblement le long de ladite tige (64) et définissent une paire de plans sensiblement parallèles, l'écartement entre lesdits plans parallèles définissant l'épaisseur maximale de ladite tige, et dans lequel ladite came saillante (58) s'étend au-delà d'un premier desdits plans parallèles, ladite tige de clé comportant en outre une cavité prévue en correspondance avec ladite came saillante, ladite cavité étant située sur la face latérale de ladite tige placée à l'opposé dudit premier plan.






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