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| Number | Title | Issue Date |
| 7552744 | Decompression valve A pressure-relief valve has a flange formed with a throughgoing port. A spring plate spaced outward from the port is mounted on a rigid post fixing the spring plate relative to the flange. A valve body between the plate and the flange can shift between a closed posi... | 06/30/2009 |
| 7469712 | Relief valve A valve for the fuel system of a turbine engine works to relieve high pressure transients in the liquid fuel side of the turbine engine arising from the elevated ambient temperatures of operation of the turbine on gaseous fuel. The valve also prevents significant pr... | 12/30/2008 |
| 7387136 | Fuel pressure regulation valve A regulation valve has: a cylinder that has an inlet port at one end side thereof to introduce the fuel thereinto, and a relief port opening on a side face thereof; a piston that is reciprocatably inserted in the cylinder to vary an opening area of the relief port i... | 06/17/2008 |
| 7334603 | Check valve A check valve has an elastic valve body portion and an inelastic valve body portion and a valve seat. The valve body is fixed to a valve shaft, and a valve body abutment plate for abutting the elastic valve body portion is supported to the valve shaft. The valve bod... | 02/26/2008 |
| 7303194 | Seal retainer with pressure energized metal seal members for undersea hydraulic coupling An improved seal retainer for an undersea hydraulic coupling member, which utilizes pressure energized metal seals to maintain fluid integrity. One or more metal seals designed to have a press or interference fit are utilized in such a way that pressurized fluid try... | 12/04/2007 |
| 7287545 | Sanitary check valve A check valve adapted for mounting between any flanges and specifically between sanitary flanges in a piping system, the check valve comprising a stationary portion and a flexible portion; the single-piece rigid stationary portion including and supporting a valve se... | 10/30/2007 |
| 7270191 | Flapper opening mechanism Methods and devices for operation of a flapper valve. A valve assembly is described with a flapper element and a valve opening assembly that will mechanically open the flapper element. The valve opening assembly is particularly valuable where the flapper element fai... | 09/18/2007 |
| 7225831 | Fluid flow control valve A fluid flow control valve that may be used as both a check valve and a relief valve. The valve includes a moveable valve member having a surface capable of forming two or more valve seal areas with two or more valve seat surfaces on a valve seat member. The valve s... | 06/05/2007 |
| 7210497 | Pressure relief device with increased flow rate A pressure relief device for electrical equipment housing, includes a valve body having a pedestal that projects above a mounting flange and a table on the pedestal that supports a two-stage valve assembly that can be sized in diameter independently of the working a... | 05/01/2007 |
| 7178552 | Valve A valve includes: a valve casing (1); a valve chamber (4) defined between a fluid inlet (2) and a fluid outlet (3) of the valve casing (1): and a plurality of check valve mechanisms (9) arranged in series within the valve ch... | 02/20/2007 |
| 7086276 | Temperature correction method and subsystem for automotive evaporative leak detection systems A method and sensor or sensor subsystem permit improved evaporative leak detection in an automotive fuel system. The sensor or sensor subsystem computes temperature-compensated pressure values, thereby eliminating or reducing false positive or other adverse results ... | 08/08/2006 |
| 7040301 | Fuel system with integrated pressure management A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak dia... | 05/09/2006 |
| 7028702 | Automatic water pressure control valve balancing temperature of mixed water The present invention discloses an automatic water pressure control valve balancing the temperature of mixed water, eliminating a cylinder enclosing the pressure control piston and multiple seal rings, to reduce the number of parts and to minimize the production cos... | 04/18/2006 |
| 7025084 | Integrated pressure management system for a fuel system An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head spa... | 04/11/2006 |
| 7007591 | Steam valve for a coffee maker A steam valve for a coffee maker comprises a valve, a valve seat, a valve block, a spring, a steam tube and a cap, wherein the valve has a plate on the top, the valve seat has a through hole, notches interconnected with the through hole, and a conical hole underneat... | 03/07/2006 |
| 7000632 | Valve apparatus A valve apparatus that has a longitudinal axis therethrough comprises a valve seat member, a valve closure member, a fluid flow path, and a screening member. The valve seat member comprises a hollow bore and a first frustoconical contact surface. The valve closure m... | 02/21/2006 |
| 6945277 | Underpressure valve The invention concerns an underpressure valve with a multi-part housing and a disc-like closing body which has at least one opening, and with an opening-free section disposed in alignment with the flow channel of the housing. ... | 09/20/2005 |
| 6931919 | Diagnostic apparatus and method for an evaporative control system including an integrated pressure management apparatus A diagnostic appartus and method for a fuel system that supplies fuel to an internal combustion engine. The fuel system includes a fuel tank that has a headspace and a filler occluded by a removable cap, a charcoal canister in fluid communication with the headspace,... | 08/23/2005 |
| 6910500 | Integrated pressure management system for a fuel system An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head spa... | 06/28/2005 |
| 6901953 | Fuel metering device for a turbomachine injector A fluid metering device including a metering valve capable of sliding in a bushing under fluid feed pressure in order to enable a fluid to be admitted and then ejected. The valve can have, at a first end, an opening opening out into a longitudinal fluid admission bo... | 06/07/2005 |
| 6736164 | Pressure control valve for a fuel tank A pressure control valve for a fuel tank with a spring-loaded valve body is intended to combine a maximum sealing effect with an unobstructed and reliable response. This is achieved in that the valve body comprises a foot part and a plate, the foot part being guided... | 05/18/2004 |
| 6681796 | Drainage valve pipe tap assembly A drainage valve tap assembly for connection of a branch line to a main line while simultaneously forming a freeze proof drain comprising a hollow body having a first end and a second end, a cutting tube attached to the first end of the body; a handle hav... | 01/27/2004 |
| 6651693 | Check valve The check valve (12, 14) of the present invention is a ball-type valve that incorporates multiple annular valve seats (34, 38) of progressively smaller diameters for the specific purpose of providing a series of effective annular valve seats as the larger... | 11/25/2003 |
| 6446613 | Two-stage pressure limiting valve A two stage pressure limiting valve comprises a valve member arranged for axial movement in a bore. The valve member is biased to close a side spill port and a valve opening communicating with a source of high pressure. Pressure at the valve member/valve ... | 09/10/2002 |
| 6435208 | Flame-retardant pressure equalizing valve A flame-retardant pressure equalizing valve contains a valve body that is guided in a housing. Under the influence of excess pressure, the valve body is displaceable from a closing position into a blow-off position. The housing and the valve body form a f... | 08/20/2002 |
| 6425413 | Valve with secondary load bearing surface A valve (120) for controlling fluid flow therethrough in downhole applications is disclosed. The valve (120) comprises a valve housing having a valve closure mechanism (122) and a valve seat (124) disposed therein. The valve closure mechanism (122) has se... | 07/30/2002 |
| 6422127 | Hydraulic actuation arrangement A hydraulic actuation arrangement including a double-action working cylinder whose working chambers are in communication via a mutually unseatable check valve with one side of a reversible pressure medium source, respectively, whereby each working chamber... | 07/23/2002 |
| 6352085 | Pressure relief valve A pressure relief valve for an oil pump of an automotive internal combustion engine. The pressure relief valve comprises a wall defining thereinside a valve accommodating bore. The wall is formed with a plurality of pressure relief holes including first a... | 03/05/2002 |
| 6289926 | Flapper valve assembly with seat having load bearing shoulder A flapper valve assembly (120) for controlling fluid flow therethrough is disclosed. The flapper valve assembly (120) comprises a tubular valve housing having a valve chamber. A valve seat (124) is mounted within the housing. The valve seat (124) has a va... | 09/18/2001 |
| 6263910 | Valve with secondary load bearing surface A valve (120) for controlling fluid flow therethrough in downhole applications is disclosed. The valve (120) comprises a valve housing having a valve closure mechanism (122) and a valve seat (124) disposed therein. The valve closure mechanism (122) has se... | 07/24/2001 |
| 6196261 | Flapper valve assembly with seat having load bearing shoulder A flapper valve assembly (120) for controlling fluid flow therethrough is disclosed. The flapper valve assembly (120) comprises a tubular valve housing having a valve chamber. A valve seat (124) is mounted within the housing. The valve seat (124) has a va... | 03/06/2001 |
| 6039072 | Safety valve arrangement A safety valve arrangement for an installation operating with a pressure medium has a pressure medium input and a pressure medium output connected by a valve. The valve comprises a valve seat and a valve closing element. The valve closing element is movea... | 03/21/2000 |
| 5983927 | Inlet valve assembly The invention proposes an inlet valve assembly integrated in apparatus for dispensing a fluid contained in a tank, the valve assembly serving to isolate said tank at least during a dispensing stage during which said fluid is dispensed, said valve assembly... | 11/16/1999 |
| 5931191 | Flow control valve for passing two fluids in opposite directions A flow control valve includes a piston moveable in a cylindrical chamber between an inlet opening and an outlet opening. The piston head has a maximum diameter smaller than the wall of the chamber to define a fixed orifice. The opposite end of the piston ... | 08/03/1999 |
| 5927607 | Sprinkle with velocity control disc A pop up sprinkler unit includes a housing having an inlet including a passage for connecting to a source of fluid such as water or air, a pressure responsive inlet valve assembly including a valve seat surrounding the inlet, a valve member having annular... | 07/27/1999 |
| 5893389 | Metal seals for check valves A poppet check valve (20) in the embodiment of FIG. 1 has a valve body (30) with a fixed unyielding metal seat (38) for engaging in metal-to-metal sealing contact with a sealing surface (48) on poppet valve member (34) at relatively high fluid pressure ra... | 04/13/1999 |
| 5881759 | Air-ventilating valve An air-ventilating valve is adapted to allow the ambient atmosphere to enter a conduit when the ambient pressure exceeds the pressure of gas in the conduit by a essentially predetermined amount, and which also blocks the release of gas from the conduit to... | 03/16/1999 |
| 5584314 | Self-cleaning inlet head for a fluid The invention provides a self-cleaning inlet head for a fluid, operable in a first, draining, mode and in a second, backflushing, mode, including a body having a front end and a rear end; a piston slidably mounted in the body and having having a front fac... | 12/17/1996 |
| 5465752 | Multi-function valve for a riser in a sprinkler system A multi-function valve for installation in a riser of a sprinkler system provides two valve functions. One function is to stop flow automatically when breakage of a sprinkler head causes the flow rate to exceed a predetermined threshold. The second functi... | 11/14/1995 |
| 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 |
