| S & B Technical Products, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110187059 | Sealing Gasket for Corrugated Pipe - A sealing gasket and pipe coupling system for corrugated pipe where a male pipe end of a male section of corrugated pipe has an axially extending bore defined by a smooth inner wall fused to a corrugated outer wall having axially adjacent, annular, outwardly-extending corrugation ribs separated by corrugation valleys, each corrugation rib having a circumference. The sealing gasket has an annular gasket body with an inner circumferential region which defines a base for the gasket and an outer sealing region, the inner circumferential region of the gasket is received within a selected corrugation valley of the male pipe end. The base of the gasket body includes a pair of laterally extending lips which, when viewed in cross section, extend outwardly across the selected corrugation valley to fit larger valleys and which bend inwardly to fit narrower valleys. The base of the gasket body extends radially outward to form a main body region, the main body region having a pair of oppositely arranged wing portions which are separated from the laterally extending lips by void regions which accommodate inward bending of the lateral lips in narrower valleys. | 08-04-2011 |
| 20110156312 | Method and Apparatus for Belling Plastic Pipe - An improved pipe belling process is shown which features a mandrel having a specially designed backup or forming collar. The backup collar has an outer contact surface which forms an undulating pattern when viewed in cross section. The undulating surface reduces the contact area between the outer contact surface of the collar and the lip region of a plastic pipe being belled, thereby lowering the coefficient of friction that exists between the pipe lip region and the collar. | 06-30-2011 |
| 20110062700 | Pipe coupling and use thereof in joining molecularly oriented pipe - A method for joining molecularly oriented pipe in which a coupling is provided which is formed of a material other than molecularly oriented pipe, such as ordinary PVC pipe. The coupling if formed as a tubular body with a combination sealing and restraint mechanism located in each of two opposing end openings of the coupling that seal and restrain mating plain spigot ends of the molecularly oriented pipe. Because the coupling is made of a material such as ordinary PVC, the sealing and restraint mechanisms can be installed in internal grooves provided in the coupling interior during normal pipe belling operations without introducing unacceptable levels of stress or strain into the product. | 03-17-2011 |
| 20100264645 | Seal and Restraint System for Plastic Pipe with Low Friction Coating - A method and apparatus for restraining plastic 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 includes a circumferential housing and a companion sealing ring which are received within a mating groove provided in the belled end of a female pipe. The circumferential housing has an interior region which contains a gripping ring insert. The sealing ring and housing are integrally located within a belled pipe end during belling operations. Either the exterior of the gripping ring or the interior of the housing is provided with a low friction coating. | 10-21-2010 |
| 20100244442 | Self Restrained Ductile Iron Fitting - 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. A ring-shaped body is installed within a mating groove provided in a mouth region of the as-cast fitting after the fitting has been cast at the manufacturing plant. The ring-shaped body is formed of an injection molded elastomeric material and carries a series of gripping segments which have teeth on an inner surface thereof which are designed to engage an outer surface of a mating male pipe. The teeth are oriented to allow movement of the male pipe in a first direction relative to an end opening of the fitting during assembly, but to resist movement in a opposite direction after the fitting joint has been assembled. The gripping segments have shelf regions which are mechanically secured to the elastomeric body of the gasket. The ring-shaped body also includes a relatively flexible portion formed of an elastomer which forms a lip seal region with the mating male pipe. | 09-30-2010 |
| 20100078937 | Self Restrained Ductile Iron Fitting - 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. A ring-shaped body is installed within a mating groove provided in a mouth region of the as-cast fitting after the fitting has been cast at the manufacturing plant. The ring-shaped body is formed of an injection molded elastomeric material and carries a series of gripping segments which have teeth on an inner surface thereof which are designed to engage an outer surface of a mating male pipe. The teeth are oriented to allow movement of the male pipe in a first direction relative to an end opening o f the fitting during assembly, but to resist movement in a opposite direction after the fitting joint has been assembled. The gripping segments are mechanically bonded to the elastomeric body of the gasket during the injection molding operation. The ring-shaped body also includes a relatively flexible portion formed of an elastomer which forms a lip seal region with the mating male pipe. | 04-01-2010 |
| 20090200705 | Method of Manufacturing a Pipe Gasket - A pipe sealing gasket is shown which is designed to be received within a groove provided within a socket end of a thermoplastic pipe such as PVC pipe used in municipal water and sewer installations. The gasket has a ring shaped body of an elastomeric material and includes a metal reinforcing band. The metal reinforcing band is entirely embedded within the body of elastomeric material during the gasket manufacturing process. | 08-13-2009 |
