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Class Information
Number: 285/95
Name: Pipe joints or couplings > With fluid pressure seal
Description: Subject matter comprising sealing means responsive to the line pressure or means to test the seal by utilization of the line pressure. Fluid pressure balancing means are found here.










Sub-classes under this class:

Class Number Class Name Patents
285/99 Coacting opposing duplicate 10
285/109 Expansible internal sleeve-type gasket 41
285/107 Expansible shank 11
285/110 Flexible lip 254
285/106 Independent supply passage 53
285/108 Separate retainer or positioner 64
285/98 Swivel with flange in socket 102
285/113 Wedged gasket 51
285/100 With expansible chamber means 16
285/96 With external pressure supply 73
285/104 With separate, encased pipe-gripping means 105


Patents under this class:
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Patent Number Title Of Patent Date Issued
8646314 Externally engaging test barrier Feb. 11, 2014
8491012 Quick-connect fluid coupling Jul. 23, 2013
8047576 Multi-media rotary union Nov. 1, 2011
7815224 Multi-media rotary union Oct. 19, 2010
7763808 Hermetic electrical feedthrough assembly for a compressor and method for making the same Jul. 27, 2010
7648177 Apparatus and method for actuating or maintaining a seal by differential pressure Jan. 19, 2010
7648176 Pipe joint Jan. 19, 2010
7390031 Quick-connect conduit coupling device Jun. 24, 2008
7344162 Pipe joint Mar. 18, 2008
7087167 Sanitary filtration plant with helical filter elements Aug. 8, 2006
7004476 Combustion gas seal for injector Feb. 28, 2006
6982382 Device for sealing ducts of electric and telephone lines Jan. 3, 2006
6971680 Dialysis coupler assembly with joint members and hemodialysis system using same Dec. 6, 2005
6929287 Apparatus for connecting flanged pipes Aug. 16, 2005
6880863 Flexible coupling for gas conduits Apr. 19, 2005
6835310 Device for coupling together a tube and a filter housing Dec. 28, 2004
6721381 Seal arrangement for in-core instrument housing Apr. 13, 2004
6581976 Swivel seal construction Jun. 24, 2003
6533327 Quick-fitting coupling Mar. 18, 2003
6522708 Seal arrangement for in-core instrument housing Feb. 18, 2003
6481762 Pipe coupling Nov. 19, 2002
6450546 High pressure product swivel Sep. 17, 2002
6367844 Attachment fitting for pressure vessel Apr. 9, 2002
6126207 Rotary joint with shear pins Oct. 3, 2000
5885450 Vessel with captive tube support ring Mar. 23, 1999
5860680 Sealing system--anti collapse device Jan. 19, 1999
5857714 Service cable and cable harness for submersible sensors and pumps Jan. 12, 1999
5817235 Anti-telescoping device for spiral wound membrane modules Oct. 6, 1998
5720503 Sealing sytem--anti collapse device Feb. 24, 1998
5617879 Sealing arrangement for a coolant union having a floating seal assembly Apr. 8, 1997
5566266 Optical fiber service cable Oct. 15, 1996
5443290 Floating ring expansion joint liner seal Aug. 22, 1995
5366258 Flexible couplings for flexible tubes designed to be rolled up flat on themselves Nov. 22, 1994
5360240 Method of connecting plastic pipe joints to form a liner for an existing pipeline and a plastic pipe joint for forming such liner Nov. 1, 1994
5277284 Container rod assembly Jan. 11, 1994
5263312 Tube fitting for a gas turbine engine Nov. 23, 1993
5071140 Self-pressurized gasket seal Dec. 10, 1991
5026023 Sealing arrangement in a plug-and-socket coupling with a pressure fluid passage, particularly between the spout of a liquid gas container and a discharge regulator mounted thereon Jun. 25, 1991
4971367 Air controlled rotary joint compensator Nov. 20, 1990
4925219 Fluid swivel assembly May. 15, 1990
4921125 Support assembly May. 1, 1990
4903941 Pressure equalizing rotary joint Feb. 27, 1990
4884830 Quick connect coupling device Dec. 5, 1989
4771828 Wellhead seals Sep. 20, 1988
4758688 Wall ducts through walls of pressure vessels Jul. 19, 1988
4741541 Seal for a rotatable pipe coupling May. 3, 1988
4669758 High pressure, multiple passage swivel Jun. 2, 1987
4647076 High pressure fluid swivel Mar. 3, 1987
4635969 Rotary joint with balanced seals Jan. 13, 1987
4626002 Self-acting seal between adjacent pipe ends of a pressure vessel Dec. 2, 1986

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