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Class Information
Number: 285/336
Name: Pipe joints or couplings > Packed > With cooperating opposed packing grooves
Description: Subject matter wherein each of the adjacent faces of the members to be joined is provided with an annular, equi-radial groove for the mutual reception of a packing element.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621568 |
Block fitting and seal structure |
Nov. 24, 2009 |
| 7581764 |
Connection seal structure for fluidic device |
Sep. 1, 2009 |
| 7549677 |
Device for sealingly linking two end pieces |
Jun. 23, 2009 |
| 7484770 |
Connecting structure for piping members |
Feb. 3, 2009 |
| 7387731 |
Filtration element and method of constructing a filtration assembly |
Jun. 17, 2008 |
| 6857638 |
Gasket for sanitary fittings |
Feb. 22, 2005 |
| 6834890 |
Coupler apparatus for use with a tendon-receiving duct in a segmental precast concrete structure |
Dec. 28, 2004 |
| 6752435 |
Symmetrical coupler apparatus for use with precast concrete segmental construction |
Jun. 22, 2004 |
| 6715802 |
Apparatus for connecting tubular bodies |
Apr. 6, 2004 |
| 6702299 |
Closure structure with a plug |
Mar. 9, 2004 |
| 6682108 |
Bottom draining tank with disposable liner and method |
Jan. 27, 2004 |
| 6620316 |
Modular system for putting together different sized filter elements |
Sep. 16, 2003 |
| 6561720 |
Axial securing device for two components by means of a locking ring |
May. 13, 2003 |
| 6523863 |
Coupling for fluid pipes |
Feb. 25, 2003 |
| 6419282 |
Compliant zero evaporative fuel connection |
Jul. 16, 2002 |
| 6318766 |
Face seal gland with raised peripheral ring having circumferentially spaced recesses |
Nov. 20, 2001 |
| 6318765 |
Serviceable mounting device for conduit |
Nov. 20, 2001 |
| 6234545 |
Clamped flange fitting and assembly |
May. 22, 2001 |
| 6231052 |
Transparent flange protector |
May. 15, 2001 |
| 6073969 |
Pipe connection for pipes having dissimilar end ferrules |
Jun. 13, 2000 |
| 6062605 |
Weldless joint |
May. 16, 2000 |
| 6045033 |
Pipe connection and method |
Apr. 4, 2000 |
| 5947528 |
Pipe flange assembly |
Sep. 7, 1999 |
| 5947533 |
Gasket assembly with elastomer expansion area |
Sep. 7, 1999 |
| 5863078 |
Pipe coupling |
Jan. 26, 1999 |
| 5837180 |
Composite plastic sanitary fitting |
Nov. 17, 1998 |
| 5803507 |
Apparatus for handling process fluid |
Sep. 8, 1998 |
| 5782500 |
Passageway aligned coupling and process |
Jul. 21, 1998 |
| 5762381 |
Connecting apparatus for conveyance of cryogenic fluid |
Jun. 9, 1998 |
| 5700014 |
Vacuum sealing structure |
Dec. 23, 1997 |
| 5669612 |
Metallic seal rings |
Sep. 23, 1997 |
| 5645301 |
Fluid transport coupling |
Jul. 8, 1997 |
| 5634674 |
Connecting device for an end of a rigid metallic pipe for conveying a fluid |
Jun. 3, 1997 |
| 5630592 |
Metal gasket, vacuum flange for the metal gasket, and vacuum seal structure using the metal gasket |
May. 20, 1997 |
| 5624124 |
Bore seal assembly with wear ring having curvilinear spring support surface |
Apr. 29, 1997 |
| 5564715 |
Tandem seal device for flow line applications |
Oct. 15, 1996 |
| 5516122 |
Ultra high vacuum elastomer seal |
May. 14, 1996 |
| 5505464 |
Minimum dead volume fitting |
Apr. 9, 1996 |
| 5466018 |
Seal ring and joint |
Nov. 14, 1995 |
| 5445393 |
Penetration limiting gland and metal gasket |
Aug. 29, 1995 |
| 5443581 |
Clamp assembly for clamp hub connectors and a method of installing the same |
Aug. 22, 1995 |
| 5433454 |
Penetration limiting gland and metal gasket |
Jul. 18, 1995 |
| 5287730 |
Plumbing leakage test apparatus and method of use |
Feb. 22, 1994 |
| 5265652 |
Multiaxial fuel transfer pipe system |
Nov. 30, 1993 |
| 5251941 |
Fail safe fitting with first and second flange projections |
Oct. 12, 1993 |
| 5240263 |
Metallic sealing rings and their manufacture |
Aug. 31, 1993 |
| 5196814 |
High power, high frequency, vacuum flange |
Mar. 23, 1993 |
| 5156536 |
Safety hand pump |
Oct. 20, 1992 |
| 5118141 |
Union joint |
Jun. 2, 1992 |
| 5087504 |
Multi-injection molded flange with gasket in wedge shaped opening |
Feb. 11, 1992 |
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