Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7562909 | Composite low cycle fatigue coiled tubing connector A coiled tubing connector having a body and a plurality of entry or transition sections connected to the body wherein the connector has a low cycle fatigue life of at least 30%, more preferably at least 50% of the coiled tubing. A preferred embodiment contains two s... | 07/21/2009 |
| 7350827 | Cam expansion ring assembly An expansion ring assembly and method for sealingly installing a gasket within an opening in a wall of a structure. The expansion ring assembly includes an expansion ring having first and second adjacent end portions, and first and second cam members are rotatably c... | 04/01/2008 |
| 7263746 | Expansion ring assembly with removable drive mechanism An expansion ring assembly for sealing a gasket within an opening in the wall of a structure, the assembly including a drive mechanism having a pair of block members each having a threaded bore, and a bolt having oppositely threaded ends respectively threaded within... | 09/04/2007 |
| 7219700 | Flexible pipe and method for producing the same In a flexible pipe having shape retaining capabilities, a first pipe is provided having a first base wire and a first subsidiary wire, the first base wire being wound in a spiral manner, the first subsidiary wire externally covering the first base wire and being fit... | 05/22/2007 |
| 7146689 | Expansion ring assembly An expansion ring assembly for sealing a gasket with respect to an annular wall of a rigid structure. The expansion ring assembly includes a drive mechanism for engaging and driving apart the opposing ends of an expansion ring to thereby radially expand the ring. Th... | 12/12/2006 |
| 7143481 | Fixing ring for flexible pipe to manhole joint The object of the present invention that a fixing ring is provided, which has annular ring form made of strip materials and is mounted in a bore or on a outside surface of flexible joints for piping, and not only has compact form and structure but also can be adjust... | 12/05/2006 |
| 7011345 | Pipe joint and couplers A pipe joint between cylindrical male and female couplers having terminal end portions with cooperating cam surfaces that facilitate assembly of the couplers. Cooperating projections on the couplers cam past one another when the couplers are assembled and restrain t... | 03/14/2006 |
| 6953194 | Expandable band and locking mechanism The expandable band is used to secure a sealing element within a generally cylindrical structure, such as a pipe or manhole, or other round hole. The expandable band includes a band body having a first band end portion and a second band end portion. The first band e... | 10/11/2005 |
| 6921085 | Packaging design incorporating gasket clamping assemblies and installation instructions A package comprising gasket mounting clamps and instructions for mounting same. The mounting clamps include an expansion clamp and a takedown clamp. The expansion clamp engages an interior of a gasket inserted. The takedown clamp is looped in the gasket. The takedow... | 07/26/2005 |
| 6805359 | Expansion ring assembly An expansion ring assembly for sealing a gasket with respect to an annular wall of a rigid structure. The expansion ring assembly includes a drive mechanism for engaging and driving apart the opposing ends of an expansion ring to thereby radially expand the ring. Th... | 10/19/2004 |
| 6702333 | Anti-vibration plug-in nipple A device for connecting a pneumatically or hydraulically operated tool to a connection coupling in order to provide the connection to a transport line which guides a liquid or gaseous medium. The device includes a first part (11) with an engaging section ... | 03/09/2004 |
| 6491066 | Resilient bevel for profile wall pipe A method for forming a spigot on a double-walled pipe and spigots formed by this method are described. The outer wall and an intermediate space of a double-walled pipe is removed from one end of the pipe over the desired chamfer length, and a preformed an... | 12/10/2002 |
| 6152455 | Expandable band and locking mechanism The expandable band is used to secure a sealing element within a generally cylindrical structure, such as a pipe or manhole, or other round hole. The expandable band includes a band body having a first band end portion and a second band end portion. A plu... | 11/28/2000 |
| 5738359 | Expandable band and locking mechanism for installing a flexible sealing element An expandable band and locking mechanism is used to install and secure a flexible sealing element, such as a rubber seal or gasket, against an internal annular surface, such as in a manhole or pipe. The expandable band is capable of expanding and being lo... | 04/14/1998 |
| 5570890 | Expandable compression ring An integrally molded compression ring for exerting an outwardly, radially directed force on an inner surface of a gasket to compress the gasket into sealing engagement with a wall of an opening. The compression ring is made from a one-piece body or strip ... | 11/05/1996 |
| 5501472 | Dual compression seal for conduits with compliance to both axial and angular movement A compression seal for conduits that pass through watertight barriers, such as containment sumps for underground gasoline pumping systems, involving two annular seals of compressible material, a first in the barrier aperture and a second on the conduit, c... | 03/26/1996 |
| 5431459 | Band with slotted wedge cams A band assembly for effecting a seal particularly adapted for use in establishing a joint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member with an... | 07/11/1995 |
| 5391064 | Frame independent electric blower half-housing This invention relates to an in-line and frame independent electric blower half-housing, with cylindrical walls or essentially nonparallel interior walls constructed of an elastomeric material, and which is thereby acoustically silenced and is also easily... | 02/21/1995 |
| 5388868 | Circular coupling system Invention is directed to a circular coupling for joining a first tubular member to a second member, where the second member may be a tubular member larger than the first, or a manhole. Specifically, the first end of the coupling is adapted to encircle the... | 02/14/1995 |
| 5370426 | Pipe connector for connecting to a hard plastic pipe A flexible pipe connector is disclosed for connecting to a hard plastic pipe. The flexible pipe connector, preferably made of polyethylene, has a tubing member which defines a cylindrical wall with inner and outer surfaces, the cylindrical wall having a m... | 12/06/1994 |
| 5280670 | Apparatus for repairing a transport pipe This describes an apparatus for repairing a plastic transport pipe with a defective section while the pipe is under pressure. A pressure vessel encloses the defective section and seals with the pipe. The defective section is cut in two and the defective s... | 01/25/1994 |
| 5029907 | Band for effecting a seal A band assembly for effecting a seal particularly adapted for use in establishing a joint between a sewer pipe and a reinforced concrete manhole riser. The seal is affected by a tapered elastomeric tubular connector boot and a clamping band member that ex... | 07/09/1991 |
| 4955641 | Pipe seals used in underground sealed distribution systems For use in underground sealed liquid distribution systems, embodiments of pipe seals are used to seal between various components used, such as pipes to manholes, pipes to reservoirs, pipes to pipes, repair couplings to pipes, couplings to corrugated pipe ... | 09/11/1990 |
| 4953897 | Vent pipe coupling A one-piece flexible plastic coupling for connecting a first conduit with a pipe of a second conduit has a central portion in the form of a bellows. The coupling has an end in the form of a cylindrical socket for receiving, an end of the pipe of the secon... | 09/04/1990 |
| 4880259 | High-temperature-resistant type coupling To couple two pipes for hot fluids together, a sealing membrane of temperature and corrosion-resistant material is located transversely within a ring-shaped chamber or space surrounding the end portions of the pipes, the sealing membrane being welded to t... | 11/14/1989 |
| 4846509 | Flexible joint means In a flexible joint having a through-bore for the flow of fluid and comprising a pair of annular rigid members relatively rotatable about the longitudinal axis of the flexible joint, an annular elastomeric bearing is interposed between the relatively rota... | 07/11/1989 |
| 4815771 | Coupling system for conduits A coupling device is provided for rapidly joining fluid-carrying conduits in either straight line or angled alignment. The device utilizes a male portion and a female portion which interengage at mating spherically contoured surfaces. A circular resilient... | 03/28/1989 |
| 4746127 | Adjustable clamping band for gaskets and method for using same A clamping band for clamping a resilient gasket against an opening within a wall to provide a fluid-tight seal therebetween. The clamping band is generally circular-shaped and has an elongated slot extending inwardly from one free end of the clamping band... | 05/24/1988 |
| 4711473 | Coupling pipes A clay or similar pipe has a coupling socket at one end formed by a shrink-fitted plastics sleeve. A sealing ring or band is interposed between the sleeve and the pipe surface. External compression is applied to the plastics sleeve over the sealing member... | 12/08/1987 |
| 4547005 | Connecting pipe part of a resilient material A connecting pipe part of a resilient material for connecting a closet bowl to a drain conduit comprises on one end a female part for receiving an outlet of a closet bowl and on the other end a male part to be received into a drain pipe or conduit, while ... | 10/15/1985 |
| 4493348 | Method and apparatus for orally dispensing liquid medication A container housing liquid medication is provided together with a syringe and a coupling member for use in orally administering the medication to a patient. The coupling member is fastened to the container and includes a head member projecting upwardly to... | 01/15/1985 |
| 4365829 | Sewer tapping apparatus A tap is established in a sewer main by drilling an aperture in the sewer main and locating a rubber cylinder into said aperture wherein the end of said rubber cylinder is provided with toroidal protuberances immediately adjacent the exterior wall and int... | 12/28/1982 |
| 4342464 | Gasket for a socket-spigot connection A gasket for a socket-spigot connection between a socket end and a spigot end of two pipes to be connected is made of a material stable as to its shape and adapted to carry at its inner radial side at least one resilient sealing ring and at its outer radi... | 08/03/1982 |
| 4304530 | Arrangement for attaching a tank fitting to a fuel tank An arrangement for attaching a tank fitting to a plastics fuel tank for motor vehicles. Through an outwardly directed pipe stub in the tank wall the fitting is inserted and fastened to the tank. Between fitting and pipe stub an elastic sleeve is clamped w... | 12/08/1981 |
| 4199310 | Extrusion apparatus A foam extrusion apparatus and method employs an extruder on an upper level extruding foamable extrudate into the upper end of a large elongated barometric leg which extends at a relatively shallow angle into a pool of water at a lower level. A conveyor i... | 04/22/1980 |
| 3958313 | Method, apparatus and product for improved pipe-to-manhole sealing An underground joint between sewer pipe and reinforced concrete manhole riser is tightly sealed, and resistant to breakage caused by settling or frost heaving by a tapered, elastomeric, tubular connector boot, capable of flexing and yielding under lateral... | 05/25/1976 |
