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Class Information
Number: 285/230
Name: Pipe joints or couplings > Flexible joint, rigid members > Concrete, clay, or masonry pipe
Description: Devices specifically adapted to clay, concrete or masonry pipe.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7571938 |
Non-leak pool fixture and method for implementing |
Aug. 11, 2009 |
| 7392989 |
Connector gasket for concrete structures |
Jul. 1, 2008 |
| 7374210 |
Hydro penetration prevention sleeve |
May. 20, 2008 |
| 7350827 |
Cam expansion ring assembly |
Apr. 1, 2008 |
| 7334820 |
Concrete pipe with a corrosion-resistant inner lining |
Feb. 26, 2008 |
| 7028972 |
Gasket and mandrel assembly for pipe joints |
Apr. 18, 2006 |
| 6899354 |
Pipe joining assembly |
May. 31, 2005 |
| 6874821 |
Coupler apparatus for use with angled post-tension cables in precast concrete segmental construction |
Apr. 5, 2005 |
| 6866301 |
Expandable band and locking mechanism |
Mar. 15, 2005 |
| 6854770 |
Pipe or the like, a female end ring, and a method of manufacturing such a pipe or the like |
Feb. 15, 2005 |
| 6834890 |
Coupler apparatus for use with a tendon-receiving duct in a segmental precast concrete structure |
Dec. 28, 2004 |
| 6764105 |
Duct coupler apparatus for use with precast concrete segmental construction |
Jul. 20, 2004 |
| 6752435 |
Symmetrical coupler apparatus for use with precast concrete segmental construction |
Jun. 22, 2004 |
| 6641176 |
Wide clamping band for clamping a connector boot within a hole through a generally cylindrical wall |
Nov. 4, 2003 |
| 6607219 |
Expansion type clamping band characterized by simplified design and ease of use |
Aug. 19, 2003 |
| 6581940 |
Concrete manhole connector gasket |
Jun. 24, 2003 |
| 6578882 |
Corrugated pipe structure |
Jun. 17, 2003 |
| 6572118 |
Flexible seal member for non-metallic conduit to concrete manhole junction |
Jun. 3, 2003 |
| 6460860 |
Pipe seal for cast concrete |
Oct. 8, 2002 |
| 6457725 |
Septic tank gasket |
Oct. 1, 2002 |
| 6450547 |
Pipe coupling for plastic pipes |
Sep. 17, 2002 |
| 6237966 |
Co-extruded dual durometer hardness pipe gasket |
May. 29, 2001 |
| 6089618 |
Sealing device for pipes |
Jul. 18, 2000 |
| 6039359 |
Protective sleeve and related method for protecting a buried pipe joint |
Mar. 21, 2000 |
| 5979908 |
Pipe seal for concrete structures |
Nov. 9, 1999 |
| 5971440 |
Pipe assembly |
Oct. 26, 1999 |
| 5955162 |
Calcium alumina cement lined pipe |
Sep. 21, 1999 |
| 5876039 |
Folded gasket and method of casting same in a wall |
Mar. 2, 1999 |
| 5826887 |
Sealing device |
Oct. 27, 1998 |
| 5687997 |
Sealing gasket with lubricant rib and retainer element |
Nov. 18, 1997 |
| 5649712 |
Device for sealing an annular space having opposing flanges, a support bead, and sealing lip |
Jul. 22, 1997 |
| 5634312 |
Shear bolt connected structural units |
Jun. 3, 1997 |
| 5605028 |
Sealing joints between cementitious articles |
Feb. 25, 1997 |
| 5566955 |
Seal between two telescopically insertable concrete components |
Oct. 22, 1996 |
| 5537794 |
Shear bolt connected structural units |
Jul. 23, 1996 |
| 5531485 |
Method for sealing a pipe juncture |
Jul. 2, 1996 |
| 5529312 |
Gasket and method of casting same in a wall |
Jun. 25, 1996 |
| 5507504 |
Sealing device with c-shaped lips and central projection |
Apr. 16, 1996 |
| 5431459 |
Band with slotted wedge cams |
Jul. 11, 1995 |
| 5398979 |
Seal for manholes and drains |
Mar. 21, 1995 |
| RE34787 |
Bidirectional gasket having water energizing pockets |
Nov. 15, 1994 |
| 5280972 |
Pipe joint |
Jan. 25, 1994 |
| 5217237 |
Bidirectional gasket having water energizing pockets |
Jun. 8, 1993 |
| 5169161 |
Symmetrical gasket for pipe joints |
Dec. 8, 1992 |
| 5114162 |
Gasket for use in manhole bases and the like |
May. 19, 1992 |
| 5108227 |
Telescoping frostproofing sleeve expandable to frost depths of area |
Apr. 28, 1992 |
| 5058907 |
Pipe joint gasket with annular anchoring heel |
Oct. 22, 1991 |
| 5054794 |
Clamping band for gaskets and the like and expansion means therefor |
Oct. 8, 1991 |
| 5029907 |
Band for effecting a seal |
Jul. 9, 1991 |
| 4997215 |
Concrete pipe adaptor and method of making |
Mar. 5, 1991 |
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