PatentDe  


Dokumentenidentifikation EP1295997 14.06.2007
EP-Veröffentlichungsnummer 0001295997
Titel WC-Dichtung
Anmelder Ponce, Omar Gabriel, Florida, Provincia, AR
Erfinder Ponce, Omar Gabriel, Florida, Provincia de Buenos Aires, AR
Vertreter derzeit kein Vertreter bestellt
DE-Aktenzeichen 60219861
Vertragsstaaten AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE, SK, TR
Sprache des Dokument EN
EP-Anmeldetag 18.09.2002
EP-Aktenzeichen 022564629
EP-Offenlegungsdatum 26.03.2003
EP date of grant 02.05.2007
Veröffentlichungstag im Patentblatt 14.06.2007
IPC-Hauptklasse E03D 11/16(2006.01)A, F, I, 20051017, B, H, EP

Beschreibung[en]
FIELD OF THE INVENTION:

A water-closet ("w.c.", "toilet" or "loo") comprises a bowl made of glassed porcelain or the like having a pan formed therein for collecting fæces, urine and like human exudates. The top of the pan is connected to the end of a water pipe for flushing the pan and carrying away the substances deposited therein. A drain pipe leads off from the bottom of the pan and through a syphon or hydraulic trap down to an outlet opening at the bottom of the bowl such that, when the water-closet is installed, the outlet opening faces down into the inlet hole of a sewage drain-pipe in the floor of the bathroom.

The present invention concerns a gasket for sealing the connection between the drain-pipe of the water-closet and the sewage drain-pipe in the floor for preventing water and the bodily wastes from leaking out and soiling the floor, thereby assisting in bathroom upkeep and hygene. Of course, the gasket may find other applications in similar fixtures, such as bidets and urinals, having drainage means passing through the floor or like building surface.

BRIEF REVIEW OF THE PRIOR ART:

To install a water-closet on the bathroom floor is not a difficult task. The bowl is placed directly on the floor to which it is anchored by a set of bolts, such that the drain-pipe is located right on top of the sewer pipe inlet at floor level. Sealing is carried out to prevent soiling of the floor around the water-closet by means of a rubber gasket the top end of which is affixed to the drain duct and its bottom end rests resiliently against the floor.

This bottom end of a conventional gasket may include three concentric rings the free circumferential edges of which bear against the floor to prevent passage of fluid and wastes outwards.

The conventional sealing means are prone to irregularities on the floor surface, which one generally tries to overcome by adding some sealer material to make up for the uneveness of the floor. However, the material eventually loses its sealing properties with time as the material ages and because of micromovements which happen in the course of normal use of the water-closet, among other reasons.

GB-A-1567326 and GB-A-2012902 both describe connectors for connecting the outlet of a water-closet to a sewage pipe.

EP-A-1197608, which was published after the priority date of the present invention, discloses a gasket with an outer gasket part for sealing the supporting edge of a water-closet base against the floor and an inner gasket part for isolating the inside of the toilet from the surrounding environment as defined in claim 1. Nevertheless, EP-A-1197608 does not disclose spaced gasket parts that are connected to each other by circumferentially spaced spokes.

SUMMARY OF THE INVENTION:

An object of the invention is to provide a gasket for sealing the outlet of water-closet so as to assure a leak-free connection, independently of the surface condition of the floor, to avoid sewage odours and leakage of liquids from the drain duct.

Another object is to provide a gasket which makes sanitary fixtures easy, quicker and cheaper to install, adaptable furthermore to different sewer piping sizes.

An accessory object of the invention is to provide a full gasket for improving the bearing and securement of the fixture of the floor and including the sealer gasket of the water-closet drain for assuring good sealing of the bearing, blocking water coming from washing down the bathroom floor from leaking into the compartment formed under the stand of the bowl and stopping dirt from getting inside and into the gap between the fixture and the floor.

In one aspect the invention provides a gasket for sealing the water-closet drain comprising a tube the top of which is affixed to the drain-pipe of the water-closet and which, according to the invention, includes a lower span fitting into the sewage pipe and provided with rings or like sealing means on the outer surface thereof for forming a fluid-tight seal against the inner surface of the sewage-pipe. In a preferred embodiment, the gasket is a single piece of moulded plastics material, such as polyvinyl, rubber or the like, integrating gasket sealing rings consisting of several rings longitudinally separated along the part of the single piece forming the tube of the gasket. In alternative embodiments, tubular bellows may be used, for instance, in place of the rings.

As an accessory, the one-piece gasket may further include the conventional concentric rings as well as inner sealer means about the top end of the gasket tube for fitting onto and forming a tight seal about the hole of the drain-pipe of the water-closet.

In a further embodiment, the drainage gasket is integrated into a common one-piece full gasket which includes an oval gasket portion through which the base of the water-closet stand rests on the floor.

BRIEF DESCRIPTION OF THE DRAWINGS:

  • Figure 1 is a schematic perspective view of the drain piping of a water-closet which is shown transparented for purposes of illustration wherein the present invention finds application.
  • Figure 2 is a perspective view of a one-piece full gasket for a water-closet including the drainage sealer gasket according to a preferred embodiment of the present invention.
  • Figure 3 is a front-back elevation view of the gasket of figure 2.
  • Figure 4 is a cross-section view of the gasket of figure 2.
  • Figure 5 is a schematic perspective underside view of the water-closet stand of figure 1 showing the installation of the gasket of figures 2 to 4.
  • Figures 6 to 12 are cross-sections analogous to that of figure 4 illustrating different drainage sealer gaskets according to respective alternative embodiments of the present invention.
  • Figure 13 is a cross-section view of an inner sealer gasket part according to a more preferred embodiment of the invention.

PREFERRED EMBODIMENTS OF THE INVENTION:

A field of application of the gasket of the present invention for sealing the drain-outlet of water-closets 21 is disclosed, notwithstanding persons skilled in the art may adapt it to other uses. As illustrated in figure 1, the water-closet 21 comprises a bowl 23 of ceramic glass in the form of a pan 25 having an inside for receiving human wastes or exudates. A duct 27 allows water to be flushed into the pan 25 for evacuating the latter through a drain-duct 29. This drain-duct 29 conventionally includes a syphon 31 for trapping water in the pan 25 and sealing malodours in a sewage pipe 37 from emanating from the pan 25 to the bathroom.

Refering specifically to the application of the present invention, the sewage-pipe 37 has a hole at floor level 33 over which the water-closet 25 is installed such that it may be engaged by the outlet hole 33 of the W.C. drain-duct 29, using one of the gaskets described in the following exemplary embodiments to prevent soiled fluid from leaking through the connection and soiling the surface of the floor 35.

Figures 2, 3 and 4 illustrate in detail a preferred embodiment of a full gasket for water-closets 21, comprising a gasket outer portion 39 having an ovaloid shape like the perimeter of the base of the stand 41 (figure 5), on which the bowl 23 rests or bears on the floor 35 (figure 1), an inner portion 43 forming the drainage sealer gasket per se of the present invention and a pair of spokes 45 bridging both gasket portions 39 and 43 to form a single piece of moulded plastics material, such as polyvinyl, rubber or like material providing slightly resilient properties, with the aggregation of antimicrobic agents. The external gasket 39 is moulded with a small step 47 on its upper face so as to fit into the base of the stand 41. The spokes 45 are pierced by a pair of orifices 49 through which bolts for securing the bowl 23 to the floor 35 may be passed.

The water-closet drainage sealer gasket 43 comprises a tube 51 of the same slightly resilient moulded plastics material which joins the drain 33 hole at the bottom of the water-closet 21 to the sewage-pipe 37. Specifically, the upper end of the tube 51 is affixed to the drain-duct 29 whereas at its bottom end, the tube 51 the tube extends, according to the invention, into a span 53 which plugs into the sewage-pipe 37, thereby providing the necessary connection in the water-closet 21 installation.

To improve and assure the sealability of this connection, sealer rings made of the same moulded plastics material, e.g. four longitudinally-spaced flat rings 55, are integrated onto the outer wall surface of the bottom tubular span 53 according to the invention. The seal-tight connection is achieved by the resilient pressure of the rings 55 against the inner wall surface of the pipe 37.

Carrying out the sanitary connection is easy to learn and do. The upper end of the tube 51 is fitted onto the end of the hole 33 at the end of the water-closet pipe 29. The outer gasket part 39 is fitted onto the perimeter of the base of the stand 41 before bringing the bowl 23 to rest on the floor 35 and effortlessly shoving the tubular ringed span 53 down sufficiently inside the pipe 37. Thereby securing bolts are installed through the orificies 49 in the spokes 45. Figure 5 illustrates the final installation of the water-closet bowl 23 with the gasket.

Considering figures 2, 3 and 4 again, the top end of the tube 51 may be connected in different ways to the drain duct 29. The present invention suggests doing it by plugging the hole 33 of the duct 29 inside the upper end of the tube 51, the inner wall surface of which has additional seal-rings in the form of four flat rings 57 longitudinally distributed along the tube 51 and which work in the same way as the main rings 55.

Figure 6 illustrates a variant to the main seal-rings, consisting in forming the bottom span 53 as a bellows 59. The bellows 59 have the same purpose of the sealer means 53 of the preceding embodiment in that, when they are forced into the pipe 37, they exert an expansion pressure against the inner wall surface of the sewage pipe 37. In the same way, the additional sealer means may be formed by a bellows 61 in the upper end of the tube arranged to exert resilient pressure about the hold 33 of the drain duct 29.

Figures 7 and 8 illustrate other alternative embodiments which are foreseen although believed to be not as preferable as the preceding embodiments, consisting in different combinations of the seal-rings 55 and 57 of figure 5 alternated with the bellows 59 and 61 of figure 7.

The cross-sections shown in figures 9 and 10 illustrate further alternative embodiments of the drain gasket of the invention wherein an upstanding ring 63 concentric relative to the tube 51 is integrated into the one-piece full gasket of the invention. The upstanding ring 63 has at the bottom thereof a free circumferential edge 65 which bears on the floor 35, as in some conventional gaskets. The cross-sections shown in figures 11 and 12 are respectively similar to the embodiments of figures 9 and 10 except that three concentric rings 63A, 63B and 63C are integrated into the one-piece gasket to seal against the floor surface 35.

Figure 13 is a cross-section of a more preferred embodiment of the drain sealer gasket part 49 of the present invention which, as in the other embodiments, may be integrated into a single piece with the stand gasket part 39. The upper portion of the gasket 49 depicted in figure 13 is an integrated disk 67 featuring a generally flat face 69 except for an upstanding ring-shaped ridge 71 designed to fit around the outer edge 33 of the bowl drain-duct 29. Installation is simplified in this case since there is no need to first fit the gasket 43 about the drain outlet pipe 29.

The lower portion of the gasket 43 has three flat rings 55. The gasket 43 is installed and works essentially in the same way as the the other embodiments, sealing the drain connection once the bowl 23 is placed thereon and secured to the floor 35.

Of course, changes, variations and aggregations may be made to the multiple embodiments described above, without departing from the scope. The same has been described by way of preferred embodiments specifically for water-closets, however those skilled in the art may suit it to other applications without departing from the purview of the invention. For example, the inner gasket 43 may be independent or devoid of the outer gasket 39 or the four rings 57 or the bellows 61 near the upper end of the tube 51 be increased, reduced or omitted for practical reasons, if any, among other variations.


Anspruch[de]
Eine vollkomen hermetische Dichtung zur Abdichtung der Verbindung zwischen einem Abflussrohr (29) am Fußstück eines Spülklosetts (41) angeordnet und ein Kloakenrohr (37) auf der Oberfläche des Fubodens, wobei diese Dichtung einschließt: ein innerer Teil (42) bestehend aus einem oberen Teil (51) der an besagtes Abflussrohr (29) angeschlossen werden kann und eine rohrförmige Strecke (53) welche sich ab diesem oberen Teil (51) nach unten erstreckt, wobei besagte rohrförmige Strecke aus einer äußeren mit elastisch verformbaren Dichtungsringen (55, 59) Oberfläche besteht, welche eine elastische Dichtung mit einer Innenfläche jenes Kloakenrohr (37) bildet; dadurch gekennzeichnet, dass jene Dichtung außerdem umfasst: einen äußeren mit einem Rand versehenen Teil (39) zur Fixierung und Abdichtung der unteren Seite am Fuß des Spülklosetts (41) gegen die Bodenfläche (35), wobei der Innenteil der hermetischen Dichtung von jenem Außenteil der Abschlussdichtung getrennt ist; zwei zylindrische voneinander getrennte Schäfte (45) wobei jeder von ihnen jene Innen- und Außenteile (39, 43) der hermetischen Dichtung verbindet; so dass jene Schäfte (45) und jene Innen- und Außenteile (39, 43) der hermetischen Dichtung in einem einzigen aus elastischem Material bestehenden Teil integriert sind. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1, dadurch gekennzeichnet, dass der Rand des Außenteils (39) praktisch oval ist. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass jene elastisch defomierbaren Dichtungsringe (55, 59) aus einer Vielzahl von in Längsrichtung geteilten Dichtungsringen (55) besteht, welche in jene rohrförmige Strecke (53) einverleibt und in jenes einzige aus elastischem Material bestehenden Teil integriert sind. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1 oder 2, dadurch gekennzeichnet, dass jene elastisch defomierbaren Dichtungsringe (55, 59) einen elastisch aufweitbaren Faltenbalg (59) einschließen und eine hermetische Dichtung gegen die Fläche der Innenwand jenes Kloakenrohrs (37) bilden. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1a 4, dadurch gekennzeichnet, dass jenes obere Teil (51) des Innenteils der Abschlussdichtung (45) eine im allgemeinen flache Scheibe (67) einschließt, welche in jene rohrförmige Strecke (53) integriert ist. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1a 5, dadurch gekennzeichnet, dass jene Scheibe (67) eine im allgemeinen flache obere Seite (69) mit einem erhöhten ringförmigen Rand (71) aufweist, welcher ein um jenes Abflussrohr (29) anpassbares Kupplungsteil bildet. - Eine vollkomen hermetische Dichtung gemäß irgend einem der Patentansprüche 1 a 6, dadurch gekennzeichnet, dass jenes obere Teil von konzentrischen sich nach unten erstreckenden Ringen (63a, 63b, 63c) umgeben ist und welche von der äußeren Oberfläche jener rohrförmigen Strecke (53) beabstandet angebracht sind, wobei jene konzentrischen Ringe (63a, 63b, 63c) obere freie Enden aufweisen, welche sich auf jene Bodenfläche (35) abstützen. - Eine vollkomen hermetische Dichtung gemäß irgend einem der Patentansprüche 1 a 7, dadurch gekennzeichnet, dass jenes obere Teil (51) eine obere rohrförmige Strecke (51) einschließt, dessen Innenfläche mit inneren weitgehend elastisch Dichtungsringen (57, 61) versehen ist, wobei jene inneren Dichtungsringe (57, 61) und jene Innenfläche vollkommen in jenes aus elastischem Material bestehenden Teil integriert sind. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1a 8, dadurch gekennzeichnet, dass jene inneren Dichtungsringe (57, 61) aus einer Vielzahl von in Längsrichtung beabstandeten Ringen (57) längs jener Fläche der Innenwand von jener oberen rohrförmigen Strecke (51) besteht. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1a 8, dadurch gekennzeichnet, dass jene inneren Dichtungsringe (55, 59) ein sich elastisch aufweitbarer Faltenbalg (61) einschließen, welcher eine hermetische Dichtung mit der Oberfläche der Außenwand jenes Abflussrohres (29) bildet. - Eine vollkomen hermetische Dichtung gemäß dem Patentanspruch 1a 10, dadurch gekennzeichnet, dass jene obere rohrförmige Strecke aus einer Innenfläche besteht, in welche jenes Abflussrohr eingesetz ist, und jener innere Dichtungsring, von welchem es zumindest einen gibt, aus einer Vielzahl von in Längsrichtung beabstandeten Ringen (57) längs jener Fläche der Innenwand von jener oberen rohrförmigen Strecke (51) besteht. - Die Installierung (21) eines auf der Bodenfläche (35) montierten Fußstücks eines Spülklosetts (41), welches ein Kloakenrohr einschließt (37), dadurch gekennzeichnet, dass eine vollkomen hermetische Dichtung gemäß irgend einem der Patentansprüche 1 a 10 jenes Fußstück (41) hält und die Verbindung zwischen dem in das Fußstück (41) integrierte Abflussrohr (29) und dem Kloakenrohr (37) ermöglicht.
Anspruch[en]
A full gasket for sealing the connection between a drain pipe (29) of a water closet stand (41) and a sewage pipe (37) in a floor surface (35), and full gasket comprising,

an inner gasket part (43) having an upper portion (51) engageable with said drain pipe (29) and a tubular span (53) extending downwardly from said upper portion (51), said tubular span (53) having an outer surface with elastically deformable sealer ring means (55, 59) for forming resilient seal with an inner wall surface of said sewage pipe (37); characterized in that the gasket further comprises: an outer gasket part (39) having a perimeter for supporting and sealing the base of the water closet stand (41) against the floor surface (35), the inner gasket part (43) being spaced from said outer gasket part; two circumferentially spaced-apart spokes (45), wherein each spoke bridges between said inner and outer gasket parts (39,43); and wherein said spokes (45) and said inner and outer gasket parts (39,43) are integrally formed as a single piece of resilient material.
A full gasket according to claim 1, wherein the perimeter of said outer gasket part (39) is substantially oval. A full gasket according to claim 1 or 2, wherein said elastically deformable sealer ring means (55,59) comprises a plurality of longitudinally spaced sealer rings (55) that are integrated with said tubular span (53) and formed of said single piece of resilient material. A full gasket according to claim 1 or 2, wherein said elastically deformable sealer ring means (55,59) comprises elastically expandable bellows (59) for forming a sealing engagement with the inner wall surface of said sewage pipe (37). A full gasket according to any one of claims 1 to 4, wherein said upper portion (51) of the inner gasket part (43) comprise a generally flat disk (67) integrated with said tubular span (53). A full gasket according to claim 5, wherein said disk (67) has a generally flat upper face (69) surrounded by an upstanding ring-shaped ridge (71) for forming an adaptable engagement around said drain pipe (29). A full gasket according to any one of claims 1 to 6, wherein said upper portion (51) is surrounded by downwardly extending concentric rings (63a, 63b, 63c) outwardly spaced from said tubular span (53) outer surface, said rings (63a,63b,63c) having free lower ends for bearing against said floor surface (35). A full gasket according to any one of claims 1 to 7, wherein said upper portion (51) comprises an upper tubular span (51) having an inner wall surface, said inner wall surface having a substantially-resilient internal sealer ring means (57, 61), wherein said internal sealer ring means (57,61) and said inner surface are integrally formed of said single piece of resilient material. A full gasket according to claim 8, wherein said internal sealer ring means (57, 61) comprises a plurality of rings (57) longitudinally spaced along said inner wall surface of said upper tubular span (51). A full gasket according to claim 8, wherein said internal sealer ring means (57,61) comprises elastically expandable bellows (61) for forming a sealing engagement with an outer wall surface of said drain pipe (29). An installation (21) having a water closet stand (41) mounted on a floor surface (35) having a sewage pipe (37), wherein a full gasket according to any one of claims 1 to 10 supports said stand (41) and connects the drain pipe (29) of the stand (41) to the sewage pipe (37). supports said stand (41) and connects the drain pipe (29) of the stand (41) to the sewage pipe (37).
Anspruch[fr]
Joint d'étanchéité plein destiné à assurer le raccord entre un tuyau d'évacuation (29) placé dans un support de water-closet (41) et un tuyau d'égout (37) sur la surface du plancher (35), comprenant: une partie intérieure (43) comportant une partie supérieure (51) pouvant s'engager dans ledit tuyau d'évacuation (29) et un tronçon tubulaire (53) s'étendant vers le bas à partir de ladite partie supérieure (51), ledit tronçon tubulaire comportant une surface extérieure munie de bagues d'étanchéité (55, 59) susceptibles de déformation élastique venant constituer un joint flexible avec une surface intérieure dudit tuyau d'égout (37); caractérisé en ce que le joint d'étanchéité comporte également: une partie extérieure (39) comportant un bord destiné à fixer et à sceller la base du support du water-closet (41) contre la surface du plancher (35), la partie intérieure du joint d'étanchéité étant écartée de la dite partie extérieure du joint d'étanchéité; deux tiges cylindriques (45) écartées l'une de l'autre, chaque tige assurant la liaison entre lesdites parties intérieure et extérieure (39, 43) du joint d'étanchéité; de manière à ce que lesdites tiges (45) et lesdites parties intérieure et extérieure (39, 43) du joint d'étanchéité sont soildaires en une seule pièce formée d'un matériau flexible. Joint d'étanchéité plein selon la revendication 1, caractérisé en ce que le bord de la partie (39) est considérablement ovale. Joint d'étanchéité plein selon la revendication 1 ou 2, caractérisé en ce que lesdites bagues d'étanchéité susceptibles de déformation élastique (55, 59) comportent une pluralité de bagues d'étanchéité (55) espacées longitudinalement, intégrées dans ledit tronçon tubulaire (53) et formées en ladite seule pièce en matériau flexible. Joint d'étanchéité plein selon la revendication 1 ou 2, caractérisé en ce que lesdites bagues d'étanchéité susceptibles de déformation élastique (55, 54) comportent un soufflet susceptible d'extension élastique (59) venant former un joint d'étanchéité avec la surface de la paroi intérieure dudit tuyau d'égout (37). Joint d'étanchéité plein selon la revendication 1 to 4, caractérisé en ce que ladite partie supérieure (51) de la partie intérieure du joint d'étanchéité (45) comporte un disque généralement plat (67) intégré dans ledit tronçon tubulaire (53). Joint d'étanchéité plein selon la revendication 5, caracterisé en ce que ledit disque (67) présente une face supérieure (69) typiquement plate entourée d'une arête annulaire verticale (71) de manière à former un accouplement adaptable autour dudit tuyau d'évacuation (29). Joint d'étanchéité plein selon l'une quelconque des revendications 1 à 6, caractérisé en ce que ladite partie supérieure (51) est entourée de bagues concentriques (63a, 63b, 63c) s'étendant vers le bas et placées vers l'extérieur de la surface extérieure dudit tronçon tubulaire (53), lesdites bagues (63a, 63b, 63c) comportant des extrêmes supérieurs libres destinés à prendre appui contre ladite surface du plancher (35). Joint d'étanchéité plein selon l'une quelconque des revendications 1 à 7, caracterisé en ce que ladite partie supérieure (51) comprend un tronçon tubulaire supérieur (51) dont la surface de la paroi intérieure comporte des bagues d'étanchéité internes considérablement flexibles (57, 61), lesdites bagues d'étanchéité internes (57,61) et la dite surface intérieure étant entièrement formées en ladite seule pièce en matériau flexible. Joint d'étanchéité plein selon la revendication 8, caractérisé en ce que lesdites bagues d'étanchéité internes (57, 61) comportent une pluralité de bagues (57) espacées longitudinalement le long de dite surface de la paroi intérieure dudit tronçon tubulaire supérieur (51). Joint d'étanchéité plein selon la revendication 8 caracterisé en ce que lesdites bagues d'étanchéité internes (55, 59) comportent un soufflet susceptible d'extension élastique (61) venant former un joint d'étanchéité avec la surface de la paroi extérieure dudit tuyau d'évacuation (29). Joint d'étanchéité plein selon la revendication 10, caractérisé en ce que ledit tronçon tubulaire supérieur comporte une surface intérieure dans laquelle s'engage ledit tuyau d'évacuation et ladite au moins une bague d'étanchéité interne comporte une pluralité de bagues espacées longitudinalement le long de ladite surface intérieure dudit tronçon tubulaire. Installation (21) d'un support de water-closet (41) monté sur la surface du plancher (35), comportant un tuyau d'égout (37), caracterisé en ce qu'un joint d'étanchéité plein selon l'une quelconque des revendications 1 à 10 soutien ledit support (41) et assure le raccord entre le tuyau d'évacuation (29) intégré dans le support (41) et le tuyau d'égout (37).






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

Anmelder
Datum

Patentrecherche

Patent Zeichnungen (PDF)

Copyright © 2008 Patent-De Alle Rechte vorbehalten. eMail: info@patent-de.com