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Dokumentenidentifikation EP1069994 01.09.2005
EP-Veröffentlichungsnummer 0001069994
Titel Zeichengerät zum Ziehen von senkrechten Linien
Anmelder Butwin, S. Robert, Ramsey, N.J., US
Erfinder Butwin, S. Robert, Ramsey, US
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 69831018
Vertragsstaaten AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE
Sprache des Dokument EN
EP-Anmeldetag 04.09.1998
EP-Aktenzeichen 989448105
WO-Anmeldetag 04.09.1998
PCT-Aktenzeichen PCT/US98/18733
WO-Veröffentlichungsnummer 0099051448
WO-Veröffentlichungsdatum 14.10.1999
EP-Offenlegungsdatum 24.01.2001
EP date of grant 27.07.2005
Veröffentlichungstag im Patentblatt 01.09.2005
IPC-Hauptklasse B43L 7/10

Beschreibung[en]

Referring now to the drawings, the invention comprises three rigid elongated members of flat stock 7, 8 and 9 made of light weight material such as aluminum, fiberglass, plastic, composite material, forming a lay out tool 50. The members or legs 7, 8 and 9 are permanently fastened together at pivots 10a and 10b in such a manner which allows them to be folded with all three members 7, 8 and 9 parallel to each other as shown in FIG. 1. The long edges 21, 22 and 23 are aligned in a stacked formation, forming the profile of a single member in a top view. This facilitates carrying and storage of the tool 50.

When folded, the tool 50 of the invention comprises three members 7, 8 and 9 stacked together with the thin edges 21, 22 and 23 of the rectangular profiles aligned. In the folded position, the tool 50 will be held closed by means of tension generated by the locking mechanism 4 which includes pin 11 and spring 16 with the spring loaded push button head 13 and the enlarged washer 15 affixed to the other end of the pin or rivet 11. The tool 50 is thus kept in this position and prevented from falling open on its own. Approximately 41370 Pascals (six pounds) of pressure is required to disengage the lock and compress the spring 16. The intermediate pin portion 11 of the locking mechanism 4 engages the notch 30 in the leg 9 to limit the movement of leg 7 during folding.

In the open position shown in FIG. 2, the tool 50 will form a right angle at the intersection of two of the members legs 7 and 8, and the other two ends will be joined by a diagonal leg 9. In the preferred embodiment, the dimensions of the legs will be 0.90 metres (three feet-leg) 7, 1.20 metres (four feet-leg) 8 and 1.50 metres (five feet-leg) 9.

The tool 50 creates and guarantees a perfect right angle by design, employing the mathematic ratio of a 3-4-5 triangle. By design, the tool 50 will retain its accuracy due to the fact that each of the three members 7, 8 and 9 are continuously attached to one another. This maintains the integrity of the tool 50. Two of the attachment points are precisely located rivet pivot points 10a and 10b. The third point is a pin or rivet 11 with a push button head 13 at one end and an enlarged washer 15 affixed to the other end engaging the surface of leg 7 which rides in a skewed slot 12. The pin 11, as thus described functions as a spring loaded positive position lock 4 keeping the tool 50 in the open position. Pressure on the push button 13 releases the spring lock 4 enabling the tool 50 to close to its folded or closed position shown in FIG. 1. Friction/tension is maintained constantly by spring 16 to provide a controlled motion of the members 7, 8 and 9 to prevent them from free falling.

The pin 11 which rides in the slot 12 is a two piece internal rivet with a push button head 13 at one end and a washer 15 affixed to the other end. The washer 15 has downwardly extending walls 26 with a central recess 27 within which the cylindrical walls 28 of the push-button rivet 29 are mounted. The washer head 16 includes an enlarged circular top 40 joined to an intermediate portion 31 of lesser diameter which engages the semi-circular aperture 50. The member 7 includes a notch 16 which the pin 11 engages preventing the tool 50 from over closing or opening in the wrong direction. The slot 12 in the member 7 is skewed at an angle relative to the edges of the member 7. At the end of the slot 12, the spring 16 pulls the post or pin 11 into a semicircular hole thereby creating a positive lock such as shown in FIG. 3b. The pin 11 is shown in an open position in FIG. 3a.

As a further advantage, the hole 5 maintains the tool 50 in a proper locked position even if the forward portion of the hole 5 becomes distorted due to repeated usage.

In the preferred embodiment the members 7, 8 and 9 are of elongated rectangular bar stock approximately 0.3 cm (1/8 inch) thick by 5 cm (2 inches) wide. As mentioned often the legs 7, 8 and 9 are 0.9, 1.2 and 1.5 metres) 3,4, and 5 feet) long respectively which creates a right angle in the open position in order to layout perpendicular lines.

It is within the scope of the invention to make an assortment of sizes and models of this tool 50, all of which retain the ratio of 3-4-5 triangle. It is also possible to use the teachings of this invention with an isosceles triangle which has two 45° angles and a 90° angle.

While the invention has been explained by a detailed description of certain specific embodiments, it is understood that various modifications and substitutions can be made in any of them within the scope of the appended claims.

BACKGROUND OF THE INVENTION

The proposed invention referred to herein as A SQUARE™, was conceived during many years of applying the theory of a 3-4-5 triangle during the practice of laying out perpendicular lines in the construction industry. Creating a perpendicular line, which is any substantial length (approximately 1.20 metres (4') or greater) requires greater accuracy than a framing square can provide due to its size. It is this need for accuracy that dictates the use of a 3-4-5 triangle using the present invention.

Typical application of the 3-4-5 triangle, prior to this invention, comprised using two tape measures simultaneously, which required two people to perform the operation with any efficiency.A SQUARE™ is a tool which creates 3-4-5 rigid triangle. Advantageously, the tool folds to a compact state with the sides of the triangle aligned to allow it to be portable and storable. The invention has a wide range of uses in the construction industry for many types of lay out, i.e., framing lay out, masonry lay out, concrete form work, finish carpentry, cabinet installation, construction supervision, ceramic tile layout, VCT tile lay out. Furthermore, the design of A SQUARE™ gives it the ability to function as a proficient sheet rock square by resting the 0.9 metres (three foot) leg on the ground rather than the traditional sheet rock square which hangs from the board. The invention may also be produced in a variety of sizes and configurations for example, an isosceles triangle.

Among the prior art patents of general interest are U.S. patents 124,222; 778,659; 1,394,088; 2,667,697; 3,345,750 and 4,955,141. The prior art patents are not directly in point and fail to provide an anticipation of the features which have made this invention a great success.

It is known from US 5,384,967 to provide a collapsible rafter square which is especially adapted for the marking of angular dimensions on, or the transfer of angular dimensions from, rafters or other building materials.

The pre-characterising features of claim 1 are known from US 5,414,938.

SUMMARY OF THE INVENTION

This invention relates to layout tools providing a right angle for laying out perpendicular lines of any substantial length. The invention comprises three legs or members, all of which are permanently attached at pivot points. Two of the three points are precisely located pivot points. The third point is a precisely located resilient locking stud or rivet which slides in a skewed slot and permits the adjoining two members to slide into a parallel plane to one another in a compact folded position when not in use and then into a locked open position creating a perfect 3-4-5 triangle for layout purposes when in use. Critical to the design is the fact that the manner in which the members are connected and aligned guarantees a perfect and not distorted 3-4-5 triangle. This is crucial to maintain the accuracy of the tool.

Accordingly, an object of this invention is to provide a new and improved layout tool which provides a right angle.

A preferred object of this invention is to provide a new and improved layout tool which includes a 3-4-5 triangle to provide an accurate 90° angle for layout purposes.

A further preferred object of this invention is to provide a new and improved layout tool involving a relatively large 3-4-5 triangle which readily slides into a compact form with the legs of the triangle in a substantially parallel plane.

Another object of this invention is to provide a triangular right angle layout tool for laying out perpendicular lines wherein the legs are pivotally mounted to one another at their ends and one end includes a spring-loaded rivet which slides in a skewed slot in an adjacent leg to collapse the triangle into linearly parallel legs.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and advantages of this invention may be more clearly seen when viewed in conjunction with the accompanying drawings wherein:

  • FIG. 1 is an elevation side-view with the invention in a closed position depicting the stacking arrangement of the members or triangle legs and the pivot point mountings;
  • FIG. 2 is a top plan view of the invention in an unlocked position depicting the overall footprint of the layout tool in an unfolded triangular arrangement;
  • FIG. 3a is an enlarged cross-sectional view of the rivet locking mechanism in an open position and FIG. 3b shows the rivet mechanism in a locked position; and,
  • FIG. 4a shows the washer portion of the rivet and FIG. 4b shows the internal portion of the rivet with the push button head.


Anspruch[de]
  1. Dreieckige Layout-Vorrichtung (50) zum Definieren eines rechten Winkels, umfassend:
    • ein erstes längliches Element (7) mit einem ersten Ende und einem zweiten Ende;
    • ein zweites längliches Element (8) mit einem ersten Ende und einem zweiten Ende, wobei das erste Ende des zweiten länglichen Elements drehbar mit dem zweiten Ende des ersten länglichen Elements in Eingriff ist;
    • ein drittes längliches Element (9) mit einem ersten Ende und einem zweiten Ende; und
    • einen Verriegelungsmechanismus (4);
    wobei die Vorrichtung selektiv in einer offenen Konfiguration und einer zusammengeklappten Konfiguration angeordnet ist, während der drehbare Eingriff jedes der länglichen Elemente aufrecht erhalten wird, wobei die Vorrichtung in der zusammengeklappten Konfiguration das erste, zweite und dritte längliche Element im Wesentlichen in derselben vertikalen Ebene liegen hat und in der offenen Konfiguration einen rechten Winkel definiert;

    wobei die Vorrichtung dadurch gekennzeichnet ist, dass das erste Ende des dritten länglichen Elements drehbar mit dem zweiten Ende des zweiten länglichen Elements in Eingriff ist, und das zweite Ende des dritten länglichen Elements drehbar mit dem ersten Ende des ersten länglichen Elements in Eingriff ist; wobei der Verriegelungsmechanismus, wenn die Vorrichtung geöffnet ist, sicher und automatisch die Vorrichtung in der offenen Konfiguration verriegelt.
  2. Dreieckige Layout-Vorrichtung (50) nach Anspruch 1, wobei das erste und das zweite Ende des ersten länglichen Elements (7) jeweils eine durch dieses hindurch verlaufende Öffnung aufweisen und ein Schlitz (12) von der Öffnung aus verläuft, welche in dem zweiten Ende des ersten länglichen Elements vorgesehen ist, wobei das erste und das zweite Ende des zweiten länglichen Elements (8) jeweils eine durch dieses hindurch verlaufende Öffnung aufweisen;

    wobei das erste und das zweite Ende des dritten länglichen Elements (9) jeweils eine durch dieses hindurch verlaufende Öffnung aufweisen;

    wobei ein erster Drehstift (11) mit den Öffnungen des ersten Endes des zweiten länglichen Elements und dem zweiten Ende des ersten länglichen Elements in Eingriff ist;

    wobei ein zweiter Drehstift (10a) mit den Öffnungen des ersten Endes des dritten länglichen Elements und dem zweiten Ende des zweiten länglichen Elements in Eingriff ist; und

    wobei ein dritter Drehstift (10b) mit den Öffnungen des ersten Endes des ersten länglichen Elements und dem zweiten Ende des dritten länglichen Elements in Eingriff ist.
  3. Dreieckige Layout-Vorrichtung nach Anspruch 1 oder 2, wobei das erste, das zweite und das dritte längliche Element ein Längenverhältnis von 3 : 4 : 5 aufweisen.
  4. Dreieckige Layout-Vorrichtung nach Anspruch 1 oder 2, wobei die Längen von zwei aus dem ersten, dem zweiten und dem dritten länglichen Element im Wesentlichen gleich sind.
Anspruch[en]
  1. A triangular layout device (50) for defining a right angle, comprising:
    • a first elongated member (7) having a first end and a second end;
    • a second elongated member (8) having a first end and a second end, the first end of the second elongated member being pivotably engaged to the second end of the first elongated member;
    • a third elongated member (9) having a first end and a second end; and
    • a locking mechanism (4);
       wherein the device is selectively arranged in an open configuration and a folded configuration while maintaining the pivotable engagement of each of the elongated members, the device in the folded configuration having the first, second and third elongated members lying in substantially the same vertical plane and in the open configuration defining a right angle;

       the device being characterised in that the first end of the third elongated member is pivotably engaged to the second end of the second elongated member, and the second end of the third elongated member is pivotably engaged to the first end of the first elongated member; the locking mechanism, when the device is opened, positively and automatically locking the device in said open configuration.
  2. A triangular layout device (50) as claimed in claim 1, wherein the first and second ends of the first elongated member (7) each have an aperture extending therethrough and a slot (12) extends from the aperture provided in the second end of the first elongated member,

       the first and second ends of the second elongated member (8) each have an aperture extending therethrough;

       the first and second ends of the third elongated member (9) each have an aperture extending therethrough;

       a first pivot pin (11) engaging the apertures of the first end of the second elongated member and the second end of the first elongated member;

       a second pivot pin (10a) engaging the apertures of the first end of the third elongated member and the second end of the second elongated member; and

       a third pivot pin (10b) engaging the apertures of the first end of the first elongated member and the second end of the third elongated member.
  3. The triangular layout device in accordance with claim 1 or 2, wherein the first, second and third elongated members have a length relationship of 3:4:5.
  4. The triangular layout device in accordance with claim 1 or 2, wherein the lengths of two of the first, second and third elongated members are substantially equal.
Anspruch[fr]
  1. Dispositif de tracé triangulaire (50) destiné à définir un angle droit, comprenant :
    • un premier élément allongé (7) ayant une première extrémité et une seconde extrémité ;
    • un deuxième élément allongé (8) ayant une première extrémité et une seconde extrémité, la première extrémité du deuxième élément allongé étant engagée de manière pivotante dans la seconde extrémité du premier élément allongé ;
    • un troisième élément allongé (9) ayant une première extrémité et une seconde extrémité ; et
    • un mécanisme de verrouillage (4) ;
    • le dispositif étant agencé sélectivement dans une configuration ouverte et une configuration pliée tout en maintenant l'engagement pivotant de chacun des éléments allongés, le dispositif dans la configuration pliée ayant les premier, deuxième et troisième éléments allongés disposés dans sensiblement le même plan vertical et dans la configuration ouverte définissant un angle droit ;
    • le dispositif étant caractérisé en ce que la première extrémité du troisième élément allongé est engagée de manière pivotante dans la seconde extrémité du deuxième élément, et la seconde extrémité du troisième élément allongé est engagée de manière pivotante dans la première extrémité du premier élément allongé ; le mécanisme de verrouillage, lorsque le dispositif est ouvert, verrouillant complètement et automatiquement le dispositif dans ladite configuration ouverte.
  2. Dispositif de tracé triangulaire (50) selon la revendication 1, dans lequel les première et seconde extrémités du premier élément allongé (7) présentent chacune une ouverture s'étendant à travers celles-ci et une fente (12) s'étend depuis l'ouverture située dans la seconde extrémité du premier élément allongé,

       les première et seconde extrémités du deuxième élément allongé (8) présentent chacune une ouverture s'étendant à travers celles-ci ;

       les première et seconde extrémités du troisième élément allongé (9) présentent chacune une ouverture s'étendant à travers celles-ci ;

       une première cheville pivot (11) s'engageant dans les ouvertures de la première extrémité du deuxième élément allongé et la seconde extrémité du premier élément allongé ;

       une deuxième cheville pivot (10a) s'engageant dans les ouvertures de la première extrémité du troisième élément allongé et la seconde extrémité du deuxième élément allongé ;

       une troisième cheville pivot (10b) s'engageant dans les ouvertures de la première extrémité du premier élément allongé et la seconde extrémité du troisième élément allongé.
  3. Dispositif de tracé triangulaire selon la revendication 1 ou 2, dans lequel les premier, deuxième et troisième éléments allongés ont une relation de longueur de 3 :4 :5.
  4. Dispositif de tracé triangulaire selon la revendication 1 ou 2, dans lequel les longueurs de deux des premier, deuxième et troisième éléments allongés sont sensiblement égales.






IPC
A Täglicher Lebensbedarf
B Arbeitsverfahren; Transportieren
C Chemie; Hüttenwesen
D Textilien; Papier
E Bauwesen; Erdbohren; Bergbau
F Maschinenbau; Beleuchtung; Heizung; Waffen; Sprengen
G Physik
H Elektrotechnik

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