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| Number | Title | Issue Date |
| 4236577 | Separately removable tubes in heavy duty heat exchanger assemblies The invention is directed to removable heat exchanger tube assemblies in heavy duty equipment radiators in which the tubes are each separately removable if they become defective in service. An inwardly facing annular ledge or abutment is molded into the i... | 12/02/1980 |
| 4188836 | Repair part and method for repairing transmission detent cable A transmission detent cable having a damaged end fitting is repaired using the repair part and method of this invention, which involves replacement of only the damaged end portion of the cable so as to thereby facilitate reuse of the otherwise serviceable... | 02/19/1980 |
| 4186475 | Method and means for rapid replacement of damaged pipe sections Method and means of rapidly repairing damaged portions of conduits and pipes which are difficult or impossible to weld, whereby in the vicinity of the pipes to be maintained prepared replacement pipe sections are stored each together with two associated q... | 02/05/1980 |
| 4180092 | Center pivot construction for center pivot sprinkler The present invention discloses an improved center pivot for a self-propelled center pivot irrigation system. The preferred embodiment is characterized by a vertical pivot pipe supported for rotational movement at both the upper and lower extremities ther... | 12/25/1979 |
| 4155346 | Solar energy collector A solar energy collector comprising a pair of manifolds for coupling one or more solar energy collectors thereto. The manifolds are provided with connectors including "O" ring sealing means for slideably receiving and connecting the open ends of collector... | 05/22/1979 |
| 4152757 | Terminal structure for outdoor luminaire A weatherproof terminal or junction box structure for a luminaire adapted for connection by a mast to a building or pole. The structure enables access to the terminal or junction box area for wiring and inspection without disassembly of the mounting of th... | 05/01/1979 |
| 4098451 | Welding method A method of repairing an under water pipeline from which a defective or damaged length of pipe has been cut away to form longitudinally spaced-apart, exposed, pipe ends which method includes the steps of: (a) butt-welding to each exposed pipe end a tubular end... | 07/04/1978 |
| 4089455 | Apparatus and method for connecting pipes by welding Apparatus and method for connecting by welding two axially spaced apart pipes which may be misaligned relative to each other, including butt welding between the pipe ends a pair of coupling members, each coupling member having a tubular portion and an end... | 05/16/1978 |
| 4082319 | Coupling sleeve A coupling sleeve for joining the ends of two conduits. One end is threaded, the other is unthreaded. The coupling sleeve has a female thread which engages the threaded end. The unthreaded end has a terminal portion of reduced external diameter running to... | 04/04/1978 |
| 4082320 | Pipe coupling A pipe coupling for joining the ends of two pipes together while permitting a certain angle to exist between the pipe axes, the coupling including a housing member associated with one pipe end, a plug-in member associated with the other pipe end and arran... | 04/04/1978 |
| 4073402 | Preassembled pressure relief apparatus A preassembled pressure relief apparatus adapted to be clamped between a pair of conventional pipe flanges. The apparatus is comprised of a pressure rupturable member supported between a pair of complementary supporting members which include seating surfa... | 02/14/1978 |
| 4066281 | Porsche automobile oil drain replacement tube A replacement oil drain tube for interconnecting the head and crankcase on a Porsche automobile engine permits the repair of such engines through a replacement of standard, single piece oil drain tubes with a telescoping oil drain tube assembly, eliminati... | 01/03/1978 |
| 4057268 | Disconnectable pipe union and device for manoeuvring same This invention relates to a union for assembling a smooth pipe end to a bush, composed of two half-unions fitted in each other and assembled by a nut fast with a toothed ring. Each half union comprises a jaw which cooperates with a sliding ring, which rin... | 11/08/1977 |
| 4035002 | Pipe coupling A coupling for unthreaded pipes of a sprinkler system, which permits the replacement of a small damaged pipe section without bending the pipes already emplaced in the ground. One coupling includes an end cap that can be installed on the end of a first pip... | 07/12/1977 |
| 4027903 | Water-degradable coupling member A core element preferably of plastic material is provided wherein one embodiment of the core element comprises (1) a tubular body member and (2) a tubular coupling member of water-degradable material disposed within one end of the tubular body member and ... | 06/07/1977 |
| 4023831 | Plastic pipe fitting A pipe fitting of polyethylene is provided wherein the pipe fitting is of integral construction and includes (1) a tubular body member that is fusion bonded at each end to (2) a coupling member, and (3) a movable tubular member that engages one coupling m... | 05/17/1977 |
| 4013309 | Repair kit for plastic pipe A repair or coupling kit for repairing previously installed plastic pipe without need for disturbing the installed condition of the pipe. The kit includes a minimum of two and a maximum of three tubular parts designed for telescopic assembly to the adjace... | 03/22/1977 |
| 4005879 | Conduit joint Each section of a conduit has a male pipe thread formed on its outer wall surface at one end. The other end of each conduit section has a short length of decreased outside diameter extending axially inwardly with a decreased axial passageway through the r... | 02/01/1977 |
| 3984130 | Pipe joint for an intermediate metal conduit Each section of an intermediate metal conduit with a constant diameter axial passageway has male pipe threads formed on its outer wall surface at one end. The other end of each conduit section has a short length of decreased outside diameter extending axi... | 10/05/1976 |
| 3971574 | Pipe coupling A coupling for unthreaded pipes of a sprinkler system, which permits the replacement of a small damaged pipe section without bending the pipes already emplaced in the ground. One coupling includes a short pipe section having an enlaged tubular portion fix... | 07/27/1976 |
| 3934616 | Telescopic structure A telescopic structure comprises an inner and an outer member telescopic relative to each other, and means for supporting and/or guiding one member relative to the other member, comprising a pair of wheels mounted on each member and positioned between the... | 01/27/1976 |
