| Patent Number |
Title Of Patent |
Date Issued |
| D574934 |
Pipe gasket |
August 12, 2008 |
|
| D559363 |
Pipe gasket |
January 8, 2008 |
|
| D558310 |
Pipe gasket |
December 25, 2007 |
|
| D557771 |
Pipe gasket |
December 18, 2007 |
|
| D557387 |
Pipe gasket |
December 11, 2007 |
|
| D557386 |
Pipe gasket |
December 11, 2007 |
|
| D556867 |
Pipe gasket for joining large diameter pipe |
December 4, 2007 |
|
| D556866 |
Pipe gasket with wiper lip |
December 4, 2007 |
|
| D553716 |
Casing insulator |
October 23, 2007 |
|
| D514671 |
Pipe gasket |
February 7, 2006 |
|
| 7618071 |
Integral restraint system and method of manufacture for plastic pipe |
November 17, 2009 |
| A method and apparatus for restraining pipe against internal forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining/sealing mechanism. The restraining/sealing mechanism includes a relatively rigid g |
| 7537248 |
Combination seal and restraint system for plastic pipe |
May 26, 2009 |
| An apparatus for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism includes a circumferen |
| 7513536 |
Pipe gasket with selective economy of scale |
April 7, 2009 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe in a pipe sealing system. The sealing system includes a male, spigot pipe end which is joined to a mating female belled pipe end. The belled pipe end has a |
| 7509724 |
Snap fit sealing gasket with precisely located internal retainer ring for square pipe grooves |
March 31, 2009 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within the belled, socket end of a plastic pipe. The sealing gasket has a body formed of resilient material and has a retainer ring embedded therein which circumscribes the gasket body. The groove in |
| 7461848 |
Snap in place gasket for sealing plastic pipelines and method of installation |
December 9, 2008 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a belled, socket end of a plastic pipe. The groove in the plastic pipe is preformed during manufacture and the gasket is installed thereafter. The gasket nominal diameter exceeds the internal |
| 7441319 |
Snap fit sealing gasket with precisely located internal retainer ring for triangular pipe groove |
October 28, 2008 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within the belled, socket end of a plastic pipe. The sealing gasket has a body formed of resilient material and has a retainer ring embedded therein which circumscribes the gasket body. The groove in |
| 7410174 |
Restraining mechanical joint gasket for ductile iron pipe |
August 12, 2008 |
| A restraining gasket for both sealing and preventing separation of a pipe joint used to join a bell end of a female ductile iron pipe to the male end of a mating ductile iron pipe. The gasket has a body formed from a compressible elastomeric material having a hardened metal ring located |
| 7404872 |
PVC seismic coupling and method of installation |
July 29, 2008 |
| A seismic coupling is provided for coupling a first longitudinal section of plain end plastic pipe to a second longitudinal section of plastic pipe. The coupling is provided in two halves with a left half being initially installed on the plain end of the first section of pipe. An int |
| 7392989 |
Connector gasket for concrete structures |
July 1, 2008 |
| A manhole assembly for a manhole having generally cylindrical sidewalls defined between an outside surface and an inside surface separated by a wall thickness and having a wall opening communicating the outside and inside sidewall surfaces of the manhole for insertion of a mating pipe. |
| 7328493 |
Self restrained fitting for PVC and ductile iron pipe |
February 12, 2008 |
| A combination sealing and restraint system for an as-cast ductile iron fitting is shown for both sealing and preventing separation of an iron pipe fitting and a mating male pipe. The restraint system includes both a sealing ring and a combination gripping ring which are installed in a |
| 7310867 |
Snap in place gasket installation method |
December 25, 2007 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a belled, socket end of a plastic pipe. The groove in the plastic pipe is preformed during manufacture and the gasket is installed thereafter. The gasket nominal diameter exceeds the internal |
| 7284310 |
Method of manufacturing a seal and restraining system |
October 23, 2007 |
| A method and apparatus for restraining pipe against both internal and external forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining and sealing mechanism. The restraining and sealing mechanism inc |
| 7134204 |
Integral restraint system and method of manufacture for plastic pipe |
November 14, 2006 |
| A method and apparatus for restraining pipe against internal forces at a pipe or fitting connection and to join and seal at least two pipes to form a pipeline is shown featuring an improved restraining/sealing mechanism. The restraining/sealing mechanism includes a relatively rigid g |
| 7125054 |
Self restraining gasket and pipe joint |
October 24, 2006 |
| A sealing and restraining gasket for preventing separation of a pipe joint used to join a bell end of a female pipe to the male end of a mating pipe. The gasket is formed from a compressible body of elastomeric material and carries a rigid ring with gripping teeth for engaging an out |
| 6974160 |
Self restraining gasket and pipe joint |
December 13, 2005 |
| A restraining element for preventing separation of a pipe joint used to join a bell end of a female plastic pipe to the male end of a mating pipe. The restraining element is formed from a compressible body of elastomeric material, the compressible body having a segmented metal ring locat |
| 6947443 |
Pipe belling apparatus and method |
September 20, 2005 |
| An improved pipe belling apparatus and method are shown in which a spiral strip of thermoplastic material is extruded and wrapped spirally about a mandrel and integral gasket. The heated material is allowed to cool and the connection thus formed is stripped from the mandrel. The gasket i |
| 6945570 |
Self restraining gasket and pipe joint |
September 20, 2005 |
| A restraining element for preventing separation of a pipe joint used to join a bell end of a female plastic pipe to the male end of a mating pipe. The restraining element is formed from a compressible body of elastomeric material, the compressible body having a segmented metal ring locat |
| 6676886 |
Pipe belling process |
January 13, 2004 |
| An improved pipe belling process is shown which features a mandrel having a specially designed backup or forming collar. The backup collar has an exposed lip portion which forms a complimentary angle with the outer sloped surface of the gasket which it abuts. The complimentary angles of |
| 6581940 |
Concrete manhole connector gasket |
June 24, 2003 |
| An integrated connection for a manhole having a wall opening defining a peripheral surface and a ring shaped elastomeric body cast in place on the peripheral surface. The elastomeric body includes a foot region cast within the wall thickness of the manhole and connected to a leg region. |
| 6499744 |
Pipe gasket with dual purpose tail |
December 31, 2002 |
| The present invention is a pipe sealing gasket designed for receipt within a bell pipe groove, the bell pipe also having an inside surface. The gasket fitted within the groove allows a spigot pipe having an outside surface to be inserted therein to form a continuous pipe joint. The gaske |
| 6457718 |
Method of forming a pipe joint between metal pipes using an extensible gasket |
October 1, 2002 |
| A pipe gasket and a method of forming a pipe joint between a metal spigot pipe and metal belled pipe. The gasket has three regions to facilitate a seal. A seal region forms the primary seal within the groove of the belled pipe. A sleeve region extending from the seal region forms a sleev |
| 6321679 |
Combination line marker and test station |
November 27, 2001 |
| A combination line marker and test station is shown which includes an upright support member, an internal locking sleeve and a test terminal which is supported by the locking sleeve within the upright member. A cap is engageable with the upper end of the support member for covering and |
| 6286450 |
Cap assembly for right of way line marker |
September 11, 2001 |
| A cap assembly is shown for a right of way line marker which includes a cap body with a conical exterior and an end opening. A mounting assembly including a lower, stationary disk and an upper, sliding disk are received within the end opening of the cap body. The lower disk has an apertu |
| 6152494 |
Pipe gasket with combined lip and compression seal geometries |
November 28, 2000 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket includes a ring shaped body which, when viewed in cross-section includes a leading nose region and a generally planar lower compression region, |
| 6113159 |
Pipe gasket with shielded band |
September 5, 2000 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket has a ring shaped body of an elastomeric material and includes a metal reinforcing band. The metal reinforcing band has an angular profile, whe |
| 6105972 |
Pipe gasket with improved low insertion geometry |
August 22, 2000 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket includes a ring shaped body which, when viewed in cross-section includes a leading nose region and a lower compression region. The leading nose |
| 6044539 |
Pipe gasket and method of installation |
April 4, 2000 |
| A method is shown for installing a pipe gasket within the bell end of a pipe section. The bell end is oriented along a horizontal work axis. The annular gasket is inserted within the mouth opening of the bell end of the pipe. The gasket is oriented at an oblique angle with respect to the |
| 6033617 |
Pipe belling process |
March 7, 2000 |
| An improved pipe belling process is shown which features a mandrel having spring loaded detents at one circumferential position on an outer working surface. A gasket is installed on the outer working surface in abutment with the exposed detents. The heated socket end of a thermoplastic p |
| 5988695 |
Pipe gasket with embedded ring |
November 23, 1999 |
| A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe. The gasket has a ring shaped body of an elastomeric material and includes a metal reinforcing ring. The elastomeric body includes a first portion of r |
| 5662360 |
Interlocked restraint for a plastic pipe joining system |
September 2, 1997 |
| An interlocking restraint plastic pipe joining system is shown which features female and male end connections for adjacent lengths of pipe. The female end connection has at least one radially extending indention or protrusion within the mouth opening thereof. The male end connection has |
| 4834398 |
Pipe gasket |
May 30, 1989 |
| A pipe gasket is shown for use in forming a joint made up of an outer pipe having an annular groove therein for receiving the gasket and an inner pipe inserted within the outer pipe. The gasket includes a body formed from a resilient material having an interior and an exterior. The inter |
