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| Number | Title | Issue Date |
| 7273238 | Duct coupler apparatus with compressible seals An apparatus for joining the ends of a pair of ribbed ducts together has a collar with an interior suitable for receiving the ends of the pair of ducts therein, a first coupler element translatably secured adjacent a first end of the collar, a compressible seal disp... | 09/25/2007 |
| 6398270 | Corrugated pipe joint A corrugated pipe joint for coupling corrugated pipes includes at least two joint components, each of which includes a joint main body made of a synthetic resin and including an arc-shaped portion and tightening projecting edges which are outwardly projec... | 06/04/2002 |
| 6129391 | Plastic coupling for plastic pipe having a completed installation signal A plastic pipe coupling for the joining of plain end plastic pipe that includes a pair of longitudinally displaced annular followers, a tubular middle ring extending between the opposite followers, an annular gasket within each follower contiguous to the ... | 10/10/2000 |
| 5948249 | Pipe seal capable of use with a filter bag and the like A sealing device 2 for forming a seal against an object such as a pipe surface 12 comprises a sealing strip 6 having a deformable inner pad 8, which is held tightly on the object by a slide fastener 18. The fastener 18 is preferably a hermetic zip fastene... | 09/07/1999 |
| 5100183 | Pipe coupling A pipe coupling for the joining of plain end pipe that includes an annular gasket and a compressible lock ring at each end of the coupling between a tubular middle ring and an annular follower. Bolts extending between the opposite followers are effective ... | 03/31/1992 |
| 4886304 | Abrasive grip pipe coupling A rigid coupling for plain ended pipe includes radially inwardly movable wedging members of a hard but ductile material, which optionally may be in the form of a collet, and a member providing a camming surface corresponding with an external camming surfa... | 12/12/1989 |
| 4606565 | Pipe couplings A pipe coupling is provided having a sleeve with frusto-conical ends, elastomeric gaskets fitting in said frusto-conical ends, a follower at each end of the sleeve, tightening bolts acting on the followers to move them axially together to compress the ela... | 08/19/1986 |
| 4569542 | Pipe coupling A pipe coupling for the joining of plain end pipe that includes an annular gasket and a compressible lock ring at each end of the coupling between a tubular middle ring and an annular follower. Bolts extending between the opposite followers are effective ... | 02/11/1986 |
| 4538841 | Insulated pipe couplings A coupling is provided for spaced coaxial pipe ends to be connected having a sleeve or middle ring with frusto-conical enlarged ends receiving the pipe ends to be connected coaxially thereof, elastomeric gaskets having a frusto-conical portion fitting the... | 09/03/1985 |
| 4372818 | Apparatus for the distillation and rectification of mixtures An apparatus unit for the fractional distillation and rectification of liquid mixtures includes a plurality of horizontal superimposed tubular main sections interconnected in series by a plurality of tubular connecting sections, e.g. U-shaped, to define a... | 02/08/1983 |
| 4240655 | Pipe coupling A flange compression pipe coupling wherein the end portions of the pipes to be coupled are surrounded by an inner jacket consisting of ductile metallic material. The inner jacket is surrounded by a radially deformable outer jacket which is biased against ... | 12/23/1980 |
| 4039211 | Coupler for liquid and gaseous fluid piping A coupler for joining the ends of pipes and ducts used for liquids and gaseous fluids, such as are carried in pipelines and the like, particularly where used in underwater locations, the coupler providing for angular relation between adjacent pipes to fol... | 08/02/1977 |
| 3992568 | Electrically conductive pipe coupling A pipe coupling affording electrical continuity between all coupling components despite dielectric pre-coating of the individual components. For rendering the coupling components electrically conductive as where required for cathodic protection in a burie... | 11/16/1976 |
| 3937499 | Mounting for nonmetallic valves A fluid receiving body and bracket assembly in which fluid pressure loads and external loads on the assembly are sustained by a bracket member embracing the body whereby shear forces on the body port areas are eliminated to thereby permit the body to be f... | 02/10/1976 |
