Source: http://www.google.com/patents/US8056939?dq=artistshare
Timestamp: 2014-08-21 00:39:38
Document Index: 188204233

Matched Legal Cases: ['art 16', 'art 14', 'art 16', 'art 16', 'art 2', 'art 10', 'art 14', 'art 16', 'art 14', 'art 16', 'art 14', 'art 16', 'art 2', 'art 16', 'art 16', 'art 16', 'art 16', 'art 22', 'art 22', 'art 16']

Patent US8056939 - Plug connector for piping - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA plug connector for pipelines, in particular pipelines made of plastic, having a housing part comprising, in two-part form, a receiving part for a retaining element and fluid seal; and a coupling part for coupling the housing part to an assembly, and can be sealed with respect to the assembly, characterized...http://www.google.com/patents/US8056939?utm_source=gb-gplus-sharePatent US8056939 - Plug connector for pipingAdvanced Patent SearchPublication numberUS8056939 B2Publication typeGrantApplication numberUS 12/297,842PCT numberPCT/EP2006/068042Publication dateNov 15, 2011Filing dateNov 2, 2006Priority dateApr 18, 2006Also published asCN101427064A, CN101427064B, DE202006006301U1, EP2008011A1, EP2008011B1, US20090167017, WO2007121794A1Publication number12297842, 297842, PCT/2006/68042, PCT/EP/2006/068042, PCT/EP/2006/68042, PCT/EP/6/068042, PCT/EP/6/68042, PCT/EP2006/068042, PCT/EP2006/68042, PCT/EP2006068042, PCT/EP200668042, PCT/EP6/068042, PCT/EP6/68042, PCT/EP6068042, PCT/EP668042, US 8056939 B2, US 8056939B2, US-B2-8056939, US8056939 B2, US8056939B2InventorsMartin Lechner, Norbert TerlauOriginal AssigneeVoss Automotive GmbhExport CitationBiBTeX, EndNote, RefManPatent Citations (29), Classifications (6), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetPlug connector for pipingUS 8056939 B2Abstract A plug connector for pipelines, in particular pipelines made of plastic, having a housing part comprising, in two-part form, a receiving part for a retaining element and fluid seal; and a coupling part for coupling the housing part to an assembly, and can be sealed with respect to the assembly, characterized in that the housing part is divided in such a way that the receiving part can be sealed directly with respect to the assembly.
1. A plug connector for plastic pipelines comprising a housing part with a plug socket for a fluid seal for the fluidtight insertion of a tubular plug-in part and for at least one retaining element for locking the plug-in part, wherein the housing part comprises, in two-part form, a receiving part and a coupling part, the receiving part enclosing the retaining element and the fluid seal, the coupling part is configured to couple the housing part to an assembly and configured to be sealed with respect to the assembly, whereby the housing part is divided in such a way that the receiving part is configured to be sealed directly with respect to the assembly, the coupling part and the receiving part are connected and fixedly engaged against relative rotation, whereby the coupling part and the receiving part axially interengage via coaxial connecting sections and are latched or pressed together in this region, the coupling part being made of metal and the receiving part being made of plastic, the coupling part including a screw-in stub and a seal, the seal enclosing the screw-in stub to seal the housing part to the assembly, the seal also being located so as to seal a gap between the coupling part and the receiving part thereby directly sealing the receiving part with respect to the assembly.
2. The plug connector as claimed in claim 1, wherein extends substantially peripherally around the coupling part from a first end of the gap situated in the plug socket to another end, wherein the seal is arranged at the another end of the gap.
3. The plug connector as claimed in claim 1, wherein the coupling part is made of brass.
CROSS REFERENCE TO RELATED APPLICATIONS This application claims priority to German patent application number DE 20 2006 006 301.3, filed Apr. 18, 2006, and PCT/EP2006/068042, filed Nov. 2, 2006.
FIELD OF THE INVENTION The present invention relates to a plug connector for pipelines, in particular pipelines made of plastic.
BACKGROUND OF THE INVENTION The relevant prior art in relation to such plug connectors is provided, for example, by EP 0 753 698 B1, EP 0 733 844 B1 and DE 203 19 959 U1 (US 2007/0284875 A1) which describe various applications and structural designs of known coupling devices.
Consequently, use has also been made of two-part designs having reduced metal content. In the case of these two-part plug connections, it is conventional for preassembled plastic receiving parts together with retaining element and sealing ring to be fastened to screw-in parts, as can be found in DE 203 19 959 U1 (US 2007/0284875 A1) in particular in the embodiment illustrated in FIG. 6 thereof. These known plug connections follow the basic principle of �retention before sealing�. The disadvantage of these plug connectors is that, apart from the main sealing ring which seals the pipe with respect to the receiving part, a further sealing ring has to seal the receiving part with respect to the screw-in part. This entails high costs on the one hand and on the other hand creates a point at which leakages can occur.
SUMMARY OF THE INVENTION An object of the present invention is to provide a multipart plug connector of the type described above, which has the advantage of simplified sealing.
By virtue of the fact that the housing part is divided in such a way that the seal�arranged in any case on the outer connecting section of the screw in stub of the coupling part for thread sealing�also seals the interface between the parts of the housing part, a situation is advantageously achieved in which, apart from the main sealing ring formed by the fluid seal in the plug socket for the pipe, no further sealing ring has to seal the receiving part with respect to the screw-in coupling part. Here, various technical embodiments are possible for the plug connector according to the invention, the common feature of all the embodiments being that the fluid seal, in particular a sealing ring, on the pipe coupling side is the only interface to the pressurized space within the plug connection.
BRIEF DESCRIPTION OF THE DRAWINGS The drawings show exemplary embodiments of the present invention which are described in more detail below. The drawings show:
FIG. 11 shows a further longitudinal section�similar to that shown in FIG. 2�through an eighth embodiment of a plug connector according to the invention.
DETAILED DESCRIPTION In the various Figures, identical parts are always provided with the same reference signs and will therefore generally each only be described once in the text which follows.
FIGS. 1 and 2 further show that the receiving part 16 is designed as a sleeve-shaped �cuff part� which, in the embodiment illustrated, can be clipped, securely against relative rotation, onto the coupling part 14 (designed without a hexagonal outer contour). The receiving part 16 is preferably made of plastic. The receiving part 16 y forms substantially the entire housing part 2 or base part 10 and also has an outer hexagonal contour for a screwing-in tool. The coupling part 14 is clipped into the cuff part of receiving part 16 from the direction of the screwing-in side (side of the screw-in stub 24) and has at least one surface which can transmit a torque for screwing in.
FIGS. 7 and 8 show further plug connectors 1 according to the invention. In the embodiment according to FIG. 7, the coupling part 14 made of metal, e.g., brass is pushed or pressed into the cuff part 16 made of plastic. The outer contour designated by the reference sign K is polygonal, preferably hexagonal�optionally with turned corners. While the connecting stub 24 is being mounted in a threaded hole, the tightening torque makes it possible to increase the pressing between the coupling part 14 and the cuff part 16. This is particularly advantageous when knurls are present.
FIG. 11 shows a further embodiment of the invention, which differs from the above-represented embodiments particularly in terms of the arrangement of the additional thread seal 26. As for the other embodiments of the invention, the plug connector 1, as shown here is intended to be coupled to an assembly (not shown), in particular to be screwed into a screw-in opening there. The housing part 2 of the plug connector, in particular its receiving part 16 here, is in this case�as in the other embodiments�oriented with its end side, particularly in the form of a flange, parallel to the surface of the assembly, with the result that it can come to bear against this surface when in a state in which it is screwed in to the maximum. The additional seal 26 here is arranged in an annular groove 27 arranged on the end side and, when the plug connector 1 is in the mounted state, seals a gap S between the end face of the plug connector 1 and the assembly. In the mounted state, this gap is the continuation of the possible leakage path between the screw-in stub 24 of 14 and the receiving part 16. In order, according to the invention, to design the receiving part 16 such that it can be sealed with respect to the assembly, it is thus not necessary in each case for the additional seal 26 to be arranged directly in the gap, S region or at the end of gap S between the screw-in stub 24 and the receiving part 16, as is shown in the other embodiments.
According to FIGS. 1 to 6, the retaining element 6 interacts with an inner cone of an additional insert part 22, the mutual fastening being able to take place, for example, by way of a snap-action form-fitting connection. It also comes within the scope of the invention for such an insert part 22 not to be present. Its functions, such as supporting the retaining element 6, can be performed, at least in part, by a cuff part 16 designed in the manner of a union element. In principle, a retaining element with a force-fitting/form-fitting action, such as, for example, the retaining element 6 in FIG. 1, or else a form-fitting retaining element (cf. FIGS. 7 and 8) can be used. Here, both the �retention before sealing� and the �sealing before retention� principles are possible.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4188051 *Mar 9, 1978Feb 12, 1980Parker-Hannifin CorporationTube couplingUS4575274 *Mar 2, 1983Mar 11, 1986Gilbert Engineering Company Inc.Controlled torque connector assemblyUS4613158 *Aug 10, 1983Sep 23, 1986Ekman K RArrangement for a coupling with a first and a second coupling part and a method for production of the couplingUS4627644 *Aug 9, 1983Dec 9, 1986Ekman K RArrangement for a push-in couplingUS4871196 *Feb 1, 1988Oct 3, 1989Mace CorporationDouble shield fittingUS5090741 *Jun 23, 1989Feb 25, 1992Bridgestone Flowtech CorporationHose end fittingUS5150924 *Feb 1, 1991Sep 29, 1992Bridgestone Flowtech CorporationHose fittingUS5230539Dec 31, 1991Jul 27, 1993Dana CorporationQuick connect tube couplingUS5511830 *Sep 20, 1994Apr 30, 1996Dana CorporationQuick connect tube couplingsUS6142538 *Jul 28, 1998Nov 7, 2000Perfection CorporationStab-type coupling with conduit inner diameter sealUS6254144 *Nov 30, 1999Jul 3, 2001Kilgore ManufacturingHose couplingUS6554323 *Nov 27, 2000Apr 29, 2003Voss Automotive GmbhPlug connector for quick-release connection of pressurized linesUS6851728 *Jun 13, 2003Feb 8, 2005Hakko Metal Industries Ltd.Pipe-coupling deviceUS7380838 *Apr 30, 2004Jun 3, 2008Lincoln GmbhConnecting device for a pipe or similarUS7475913 *Jun 20, 2005Jan 13, 2009Smc Kabushiki KaishaTube jointUS7654584 *Nov 23, 2005Feb 2, 2010Legris SasGuide bushing easily inserted into a coupling bore, and a corresponding couplingUS20070284875Dec 17, 2004Dec 13, 2007Bernd Salomon-BahlsPlug Connector For Fluid ConduitsDE2837977A1Aug 31, 1978Mar 6, 1980Voss ArmaturenSchwenkverschraubungDE4423805A1Jul 6, 1994Jan 11, 1996Voss ArmaturenAnschlu�vorrichtung f�r DruckleitungenDE20007703U1Apr 28, 2000Jul 6, 2000Wira Fahrzeug Und MaschinenteiRohranschlu�verbindung zum Steckanschlu� eines RohrendesDE20319959U1Dec 23, 2003May 4, 2005Voss Automotive GmbhSteckverbinder f�r MedienleitungenDE29807763U1Apr 29, 1998Sep 9, 1999Voss ArmaturenAnschlu�vorrichtung zum schnellen und l�sbaren Anschlu� von RohrleitungenEP0132319A1Jun 28, 1984Jan 30, 1985John Derek GuestQuick release tube couplingEP0555981A1 *Feb 2, 1993Aug 18, 1993John Derek GuestImprovements in or relating to tube couplingsEP0733844B1Mar 19, 1996Oct 6, 1999Armaturenfabrik Hermann Voss GmbH + Co.Conduit connection deviceEP0753698B1Jun 19, 1996Aug 30, 2000Armaturenfabrik Hermann Voss GmbH + Co.Plug connector for connecting pressure conduitsEP1199506A1Oct 18, 2001Apr 24, 2002Armaturenfabrik Hermann Voss GmbH + Co. KGConnecting device for pressure pipesGB2171770A Title not availableWO2003031862A1Oct 1, 2002Apr 17, 2003Bendix Commercial Vehicle SysPush-to-connect fittings for air brake reservoirs* Cited by examinerClassifications U.S. Classification285/323, 285/243, 285/307International ClassificationF16L37/00Cooperative ClassificationF16L37/0925European ClassificationF16L37/092BLegal EventsDateCodeEventDescriptionMar 13, 2012CCCertificate of correctionOct 20, 2008ASAssignmentOwner name: VOSS AUTOMOTIVE GMBH, GERMANYFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LECHNER, MARTIN;TERLAU, NORBERT;REEL/FRAME:021710/0270;SIGNING DATES FROM 20080930 TO 20081005Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LECHNER, MARTIN;TERLAU, NORBERT;SIGNING DATES FROM 20080930 TO 20081005;REEL/FRAME:021710/0270RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google