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| Number | Title | Issue Date |
| 7357189 | Seal There is disclosed an expandable seal for sealing at least part of a wall of a well borehole, an expandable seal assembly comprising at least two such expandable seals, and a method of sealing at least part of a well borehole using such a seal. In one embodiment, th... | 04/15/2008 |
| 7032575 | Valve assembly for a fuel pump module A fuel pump module includes a reservoir configured to hold a supply of fuel. The reservoir includes a fuel passageway and defines a first seat on a first side of the fuel passageway and a second seat on a second side of the fuel passageway. The module also includes ... | 04/25/2006 |
| 6953051 | Valve plate structure Disclosed is a valve plate structure comprising: a suction valve for inhaling a low pressure of coolant through a linear reciprocating movement of a piston and an opening and closing operation in response to the back-and-forth movement; a valve plate coupled with th... | 10/11/2005 |
| 6848471 | In-line check valve A check valve is placed in a conduit for pressurized fluids, and comprises a cylindrical external housing having inlet and outlet ends, a cylindrical internal spigot, and an elastomeric sleeve fitted over the spigot. It is sealed at the second end, and has a plurali... | 02/01/2005 |
| 6695011 | Flow regulator A flow regulator (1) having a regulator housing (2) in which, in a flow channel, an annular flow restrictor (5) made of elastic material is provided that is pushed onto a fastening post (4) and encircles this post. The post (4) has at least two fastening ... | 02/24/2004 |
| 6575192 | Check valve for a prechamber assembly The invention relates generally to a check valve and more particularly to a check valve for a fuel passage of a prechamber assembly of an internal combustion engine comprising a carrier member, a stop member, and a ring member. The ring member is resilien... | 06/10/2003 |
| 6539974 | Valve with guide extensions for valve plate The valve includes a valve seat (1) having passage channels (2) for the controlled medium which are arranged essentially in a ring-shape and concentrically, of a catcher (3) having flow-off channels (4), a valve plate (5) that is movably arranged, in part... | 04/01/2003 |
| 6428292 | Discharge valve A compressor assembly includes a shell which defines a discharge chamber. A discharge valve assembly is attached to the shell in communication with the discharge chamber. The discharge valve assembly includes a stamped or coined valve seat, a drawn tubula... | 08/06/2002 |
| 6296013 | Pressure/flow rate control valve Disclosed is a pressure/flow rate control valve comprising a valve-opening/closing section having a valve plug which is installed with an elastic member having a substantially tapered cross section at one end, a stem which is displaceable integrally with ... | 10/02/2001 |
| 6171084 | Discharge valve A compressor assembly includes a shell which defines a discharge chamber. A discharge valve assembly is attached to the shell in communication with the discharge chamber. The discharge valve assembly includes a stamped or coined valve seat, a drawn tubula... | 01/09/2001 |
| 5785073 | Pipe burst protection pressure relief apparatus for sliding plate plumbing fixtures According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A normal shut-off seal i... | 07/28/1998 |
| 5411054 | Positive displacement compressor A reciprocating positive displacement compressor is described. The positive displacement compressor has an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the... | 05/02/1995 |
| 5311902 | Reciprocating compressor valve A reciprocating positive displacement compressor is described having an intake or exhaust valve provided with a deformable seal means, such as a Belleville spring, that makes edge or area contact with a valve seat in the closed condition of the valve, is ... | 05/17/1994 |
| 5273068 | Air admittance valve for resisting high internal pressure An air admittance valve device is disclosed for enabling valve sealing member to remain securely closed against high pressure in a pipe or duct produced from: equipment connected to said pipe or duct e.g. a hydraulic pipeline flusher device; fluid movemen... | 12/28/1993 |
| 5230363 | Suction valve for high pressure slurry pump Where on the valve seating surfaces due to the high pressure pumping of abrasive slurry through an in-line valve is greatly reduced by providing first and second valve seating surfaces which are engaged, respectively by first metal and first elastomeric c... | 07/27/1993 |
| 5052434 | Valve, especially for compressors The valve, which is intended especially for compressors, comprises a valve seat (1) with passage channels (2), a catcher (3), and at least one sealing element (5), which is arranged in the intermediate space between the valve seat (1) and the catcher (3).... | 10/01/1991 |
| 5048562 | One way air admittance valve A one way air admittance valve (2) for admitting air into a pipe (3), which valve (2) comprises a body portion (4) for fitting to the pipe (3), at least one air inlet port (6) in the body portion (4), and rigid sealing means (16) which is longitudinally m... | 09/17/1991 |
| 5022832 | Ring valve type air compressor There is disclosed a valve assembly and a reciprocating type fluid pump having a piston cylinder and a cylinder head together which define a fluid chamber. A first ring valve having a seal surface on one side is disposed within the fluid chamber adjacent ... | 06/11/1991 |
| 5011383 | Valve assembly, for use in combination with a straight-cylinder, gas-compression chamber, and in combination therewith The assembly, designed for use in combination with a straight-cylinder, gas-compression chamber, has a center bolt which is threaded at opposite ends thereof to receive a pair of valve sets. Each of the latter has a ported valve seat, valve guard, and por... | 04/30/1991 |
| 5007454 | Fluid control valve with tubular poppet A fluid control valve comprises a slidable, tubular poppet member that is biased toward and sealingly engages dual concentric annular valve seats, which valve seats define an annular opening through which the fluid medium flows when the valve is open. Whe... | 04/16/1991 |
| 4945946 | Valve seat for a plate-type, fluid-control valve In lieu of the customary concentric annuli upon which to receive a ported valving plate, the seat has a plurality of lands at a common radial distance inwardly from the periphery thereof. The separations between the lands, circumferentially, define additi... | 08/07/1990 |
| 4924906 | Ring valve The valve plate (6) which is spring-loaded against the valve seat (2) of the ring valve comprises individual annular plates (10) disposed over the passage channels (1) of the valve seat, plus a support plate (11) which lies jointly on all the annular plat... | 05/15/1990 |
| 4867200 | Unidirectional fluid flow check valve assembly A unidirectional fluid flow check valve assembly is ideally suited for controlling gaseous fuel flow to pre-combustion chambers of internal combustion engines. The unidirectional fluid flow check valve assembly has an orifice plate having a center orifice... | 09/19/1989 |
| 4856558 | Flapper control valve A flapper control valve having a valve housing and at least one valve port plate sealably secured to the valve housing. Each valve port plate has at least one valve port plate through hole. At least one back plate is mounted downstream from the valve port... | 08/15/1989 |
| 4834632 | Compressor valve system A scotch yoke compressor assembly is disclosed wherein four radially disposed pistons reciprocate in cylinders defined in a crankcase. In a central portion of the crankcase, a scotch yoke mechanism operably couples the pistons to an eccentric portion on a... | 05/30/1989 |
| 4687435 | Pulse combustor A pulse combustor has a casing in which a combustion chamber is defined. Air is supplied to the combustion chamber through an air supply pipe. A valve mechanism for controlling the air supply to the chamber is provided in the air supply pipe. The valve me... | 08/18/1987 |
| 4669498 | Controllable air valve for an inflatable body The valve comprises a valve socket to be mounted in the wall of an inflatable body, e.g. by a snap fastener device, and a valve cap having an internal thread for threaded connection with an external thread on the valve socket. The valve socket includes an... | 06/02/1987 |
| 4628958 | Ring valve A ring valve apparatus is designed for efficient transfer of liquids and gases and for attaining near-perfect vacuum state of gases. Intake means consist of a flexible ring valve and three ports encompassed by valve seats. Exhaust means include a rigid ri... | 12/16/1986 |
| 4597411 | Restriction valve device for hydraulic pressure fluids in vehicle shock absorbing mechanisms A restriction valve device for hydraulic pressure fluid in a vehicle shock absorbing mechanism comprises a valve seat member with at least one main opening for the passage of said pressure fluid, said main opening being closable by means of a movable spri... | 07/01/1986 |
| 4549565 | Reclosing rupture disk assembly A rupture disk assembly is provided which after rupture and pressurized fluid relief, recloses itself to prevent backflow therethrough. The assembly is comprised of a hollow rupture disk support member having a pressurized fluid inlet opening at one end a... | 10/29/1985 |
| 4532959 | Valving element for a plate-type valve The valving element, according to the first embodiment depicted, comprises a plate-type element having an undulated or scalloped edge or periphery. The plate-type element has a plurality of flow ports formed therein each of which subtends an arc drawn fro... | 08/06/1985 |
| 4531543 | Uni-directional flow, fluid valve The valve has a seat and plate coupled together to define a shallow chamber therebetween, and a thin, metal, valving disc is freely movable, through the chamber, between the seat and plate. The disc has a metering orifice in the center thereof for communi... | 07/30/1985 |
| 4495964 | Unidirectional-flow fluid valve In the embodiment shown, the valve has a seat and a stop plate with valving elements therebetween. The seat has pluralities of openings formed therein, and the stop plate has a central void. The valving elements move, to open or close off communication be... | 01/29/1985 |
| 4483363 | Compressor valve A compressor valve with annular valve members or rings instead of the usual spring-urged engagement of the rings with the valve seat, the rings are drawn into engagement with the seat by air or other gas passing through the valve in a direction reverse to... | 11/20/1984 |
| 4461452 | Valve assembly for a pressure-cooker This invention relates to a valve assembly for a pressure-cooker in accordance with the preamble of claim 1.... | 07/24/1984 |
| 4450861 | Compressed gas saving device Compressed gas saving device designed to be implanted in a pipe system connecting a control valve outlet to the inlet of a pressure-user apparatus constituted by a body in which a first passage is provided which passage starts from a first end of the body... | 05/29/1984 |
| 4398559 | Valve member and assembly with inlet and outlet pressure relief grooves A valve assembly and a valve member therefor including a fluid passage in the valve assembly with inlet and outlet portions and a valve seat. The valve member includes a valve member face selectively engaging the valve seat and defining a contact area the... | 08/16/1983 |
| 4346704 | Sleeve valve for parenteral solution device A sleeve valve is carried in a parenteral solution administration device. The valve comprises an outer housing (30) defining an outlet tube (28); an inner tubular support (38) defining an inlet tube (45) and a closed forward end positioned within the outl... | 08/31/1982 |
| 4283991 | Percussion mechanism Fluid-actuated percussion mechanism includes a housing with an internal cylindrical space receiving a reciprocating piston dividing the space into a working stroke chamber and an idle stroke chamber. The mechanism further includes fluid distributing means... | 08/18/1981 |
| 4278106 | Plate check valve A plate check valve having a housing for mounting across a fluid passsageway to prevent reverse flow therein; a cage detachably mounted on the housing; a plurality of annular, planar, coaxial, radially spaced seat plates releasably clamped between the hou... | 07/14/1981 |
