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| Number | Title | Issue Date |
| 7341285 | Chemical fusion of non-metallic pipe joints A pipe joint for joining pipes having a low surface energy and resistance to solvents. The components are an extrudable adhesive; a first pipe having a socket with an inside diameter, where the socket has a mouth, a self-centering bottom, and a cylindrical wall with... | 03/11/2008 |
| 6431274 | Well packer An inflatable packer or bridge plug utilized in well bores comprises a tubular elastomeric bladder that is circumferentially surrounded by flexible metallic rib elements. At opposite ends of the packer, the ribs are secured to the inside bore of respectiv... | 08/13/2002 |
| 6070912 | Dual seal and connection A dual seal is provided for establishing fluid tight engagement between conduits subjected to both internal and external pressure. The dual seal comprises four seal portions disposed between an inner and an outer cylindrical surface.... | 06/06/2000 |
| 6070915 | Coupling device for tube The present invention relates to an improved coupling device for tube and that is configured with a tube and an insert that can be fixedly disposed within the tube. The insert includes at least an enlarged portion that has an annular groove thereof, and a... | 06/06/2000 |
| 5664810 | Fireproof electrical wire housing A fireproof electrical wire housing (9) for routing electrical wires through a barrier wall, such as an aircraft bulkhead (21), without destroying the fireproof and hermetic functions of the bulkhead (21) is disclosed. The fireproof electrical wire housin... | 09/09/1997 |
| 5507532 | Branched hose connector A branched hose connector includes a branched inner pipe substantially made from a suitable lightweight material, a plurality of hoses connected onto the branched inner pipe, a cover covering the branched inner pipe and a portion of the hoses to join the ... | 04/16/1996 |
| 5127116 | Pipe joint A joint between pipes (12, 14) each having a liner (16, 18) of polyolefin such as polythene. The pipes are spaced apart and the liner protrudes from each and is joined to its neighbor by a fusion coupling (20). The pipes are interconnected by a shell (24,... | 07/07/1992 |
| 4993875 | Pipe sealing and anti-corrosion system An anti-corrosion sealing assembly for use between a protective casement sleeve and a pipe to be protected is disclosed. The pipe extends through the protective casement sleeve such that an annular casement cavity is formed therebetween. The sealing assem... | 02/19/1991 |
| 4927181 | Apparatus and method for sealing leaks The present invention is an apparatus and related method for sealing leaks at the surface of an article, comprising a plurality of interlocking links constructed to form a circumferential collar on the circumferential surface surrounding a leak. The links... | 05/22/1990 |
| 4861074 | Tubing collar A collar for electrically insulating between upper and lower tubing sections in which load bearing insulating materials in the collar are isolated from fluids both interior and exterior the collar.... | 08/29/1989 |
| 4576401 | Leak repair clamp A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of one piece frame segments positionable in end-to-end relationship around the pipe. Each segment includes a pair of spaced apart metal lips which are adapted to form a meta... | 03/18/1986 |
| 4171142 | Leak repair clamp A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of segments positionable in end-to-end relation around the pipe. Each segment includes spaced parallel annular lips flaring from its inner periphery with each lip being an i... | 10/16/1979 |
| 4153656 | Pipe joints A method of joining pipes in which a sleeve is placed over the adjacent ends of the pipes so as to overlap each pipe. The sleeve fits with clearance around the pipe ends. The ends of the clearance space are closed by inflating hollow sealing rings and the... | 05/08/1979 |
| 4053176 | Collar for sealing pipe joints This invention pertains to equipment for sealing pipe joints and particularly a collar for sealing a leaking underground gas main with an absolute minimum of excavation. The procedure as currently practiced for accomplishing this result includes the insta... | 10/11/1977 |
| 4049296 | Leak repair clamp In one exemplar embodiment, a leak repair clamp for pipe and pipe flanges, valve bonnet flanges and the like is disclosed having a divided clamp frame positionable about the pipe or pipe flange. The divided clamp frame has a pair of spaced parallel channe... | 09/20/1977 |
