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| Number | Title | Issue Date |
| 7428914 | Flow control valve A flow control valve includes a housing, a valve element, a valve-element urger, a first valve, and a second valve. The first valve closes the communication between inlet and outlet openings of the housing gradually when the valve-element urger moves the valve eleme... | 09/30/2008 |
| 7415820 | Hybrid powertrain with valve assembly for dual pumps A powertrain includes a first pump and a second pump. A conduit defines a passageway for providing hydraulic pressure from the first pump or the second pump to a transmission. A valve assembly is configured to selectively supply hydraulic pressure to the passageway ... | 08/26/2008 |
| 7367788 | Pump for antilock braking system in vehicle A pump including a main body having a piston provided in a portion of the main body, the piston being configured to reciprocate linearly. A piston spring may be provided within the main body and configured to bias the piston toward an end of the main body. Further, ... | 05/06/2008 |
| 7311740 | Snap acting split flapper valve A filter bypass valve is disposed in parallel with an aircraft cabin air filtration system air filter. During normal operation, air is filtered through the air filter at an air flow that meets air flow requirements of the system. The bypass valve is designed to rema... | 12/25/2007 |
| 7226003 | Rotary drive sprinkler with flow control and shut off valve in nozzle housing A flow shut off or throttling valve is provided in a sprinkler nozzle housing to enable a nozzle to be changed without having to turn off a flow pressure source. The valve intersects a flow path through the nozzle housing and has an opening such that when the openin... | 06/05/2007 |
| 7201188 | Fluted reciprocating ball valve The device described herein is a valve suitable for the control or shut-off of fluid flow in a piping system. It comprises a valve housing having inlet and outlet ports and a cylindrical bore whose axis is slanted at about 90 degrees in relation to the axis connecti... | 04/10/2007 |
| 7086413 | Bi-directional damper valve for a hydraulic line, power steering system incorporating the damper valve, and methods of using same A bi-directional damper valve is provided for connecting to a hydraulic line, to regulate fluid flow therethrough. The damper valve includes a main valve body having a flow passage formed therethrough, and the flow passage widens at central portion of the valve body... | 08/08/2006 |
| 7080654 | Method for transporting easily polymerizable liquid by pipeline A method for transporting an easily polymerizable liquid by a pipeline having branches, wherein among pipelines branched at a branch point, one pipeline which may not be used over a long period of time, is provided with a valve to close the pipeline, within 500 mm f... | 07/25/2006 |
| 6921029 | Method and apparatus for reducing the precipitation rate of an irrigation sprinkler A method and apparatus for reducing the effective precipitation rate of an irrigation sprinkler during an irrigation cycle without disrupting the supply of pressurized water from the source opening and closing the inlet to the sprinkler riser at timed intervals thro... | 07/26/2005 |
| 6705260 | Reed valve VCT phaser with worm trails The phaser of the present invention includes a reed plate. The reed plate has reed valves, which control the flow of hydraulic fluid. The reed valves are all inclusive on the reed plate. Worn trails in the surface of the parts sandwiching the reed plate direct the f... | 03/16/2004 |
| 6578604 | Ball valve with slot for continuous flow The invention concerns a device for controlling a fluid flow, characterised in that said device comprises second valve arrangement means interposed in the circuit in series with first valve arrangement means (20, 22, 34), and wherein a second mobile closu... | 06/17/2003 |
| 6394219 | Hydraulic power steering system with a pressure relief valve A hydraulic power steering system (10) for turning steerable wheels of a vehicle. The system (10) comprises a steering gear (12) including a hydraulic motor and a steering valve. The steering gear is susceptible to pressure fluctuations that cause noise d... | 05/28/2002 |
| 6382244 | Reciprocating pump standing head valve A circular check valve with a central aperture is disclosed. The preferred use as a standing head valve for reducing hydrostatic pressure in a wellbore being produced by a reciprocating pump is discussed. In this application the circular check valve allow... | 05/07/2002 |
| 6231323 | High pressure reciprocating pump A high pressure reciprocating pump (10) for high fluid pressures between 30,000 and 60,000 psi and having a valve cartridge (57) positioned within a manifold block (15) of the pump (10). The valve cartridge (57) has a fixed body (58) with a plurality of e... | 05/15/2001 |
| 5957157 | Pilot operated pressure/vacuum vent for a fuel storage tank A pressure/vacuum vent of the present invention is mountable to the vent pipe of a storage tank. The vent includes a valve housing having a wall defining a chamber which is in fluid communication with said storage tank. It includes a first valve responsiv... | 09/28/1999 |
| 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 |
| 5823870 | Method and apparatus for reducing exhaust flap movement An apparatus used with a vehicle one way ventilation exhaust valve with a plurality of flexible flaps is provided comprising a retainer with a frame and a plurality of flap retention members connected across U-shaped members attached to the frame such tha... | 10/20/1998 |
| 5707283 | Dual baffle system in automatic air inlets for livestock facilities A dual baffle system which can be incorporated into automatic air inlets used in livestock facilities. This system consists of four different components: two baffles, spring, opening mechanisms, and stationary bracket. This baffle system is positioned ins... | 01/13/1998 |
| 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 |
| 5419689 | Vacuum pump having oil-actuated inlet valve A vacuum pump which includes an oil pump for raising the pressure of oil in the vacuum pump during operation of the vacuum pump and an inlet valve for isolating the vacuum pump inlet during non-operation of the vacuum pump. The vacuum pump has an operatin... | 05/30/1995 |
| 5287841 | Flow divider and utilization system A flow divider (20) is located between a first fuel return line (18), leading from an engine to the flow divider (20), a second fuel return line (22) leading from a first flow divider outlet (46) to a first tank (A), and a third fuel return conduit (24) l... | 02/22/1994 |
| 5241986 | Check valve assembly for high-pressure applications A check valve having a valve housing with an outlet fluid passage and a housing valve cavity in communication with each other. A valve body has an inlet fluid passage and a body cavity in communication with each other. The valve body is sealably secured t... | 09/07/1993 |
| 5183075 | Check valve Check valve with a movable valve element (3), especially a valve element that is manufactured from a ball, said valve element possessing a spherical surface (7) which faces a valve seat (5) and serves as a sealing surface, possessing a radial guidance zon... | 02/02/1993 |
| 5176171 | Check valve A check valve includes an outer poppet therein having a central opening therein where the outer poppet is mounted on the internal lip within the body of a valve. The outer poppet is translatable relative to the inner lip and body and an inner poppet is mo... | 01/05/1993 |
| 5174463 | Cap for a container, especially a vehicle radiator In a closure cap for a container, especially for a vehicle radiator, with an outer part (12), an inner part (16) of cup-shape connected with the outer part and insertable into the opening to be closed, and having an overpressure valve arranged in the inne... | 12/29/1992 |
| 5095939 | Redundant pressurizing valve A pressuring valve having a housing with a bore therein for retaining concentric first and second pistons within a sleeve having an end wall with an entrance port connected to a first conduit. A spring within the bore urges a first face on the first pisto... | 03/17/1992 |
| 5046755 | Hydropneumatic suspension system A hydropneumatic suspension system having at least one shock and vibration damper including a cylinder-piston unit (2) provided with a gas storer (34) co-acting with a damping valve (60) provided with choke valves (88, 90, 92, 94). The choke valves (88, 9... | 09/10/1991 |
| 5018607 | Hydraulic dashpot for pipeline systems A hydraulic dashpot for supporting pipes or similar loads comprises a cylinder having a piston mounted for displacement therein, the piston setting-off the cylinder chambers which are in fluid communication with a fluid storage chamber, and the piston hav... | 05/28/1991 |
| 5004009 | Valve device for controlling liquid flow A valve device comprises a vertical, tubular housing, a vertical valve member in the housing, and a coil-form compression spring encircling the member and urging it upwardly against a valve seat in the housing lower end. The member includes an upper, obtu... | 04/02/1991 |
| 4962786 | Hydraulic fuse with pressure regulator A hydraulic fuse monitors the quantity of hydraulic fluid passing through the fuse, and then blocks such flow when a selected quantity of fluid has passed through the fuse which includes: a body structure containing cavity structure; a primary piston in t... | 10/16/1990 |
| 4862911 | Check valve assembly for high pressure pumps Disclosed herein is a check valve assembly for use in high pressure pumps having a high pressure plunger reciprocating in a pressure chamber or for use in other pressure chambers wherein both fluid inlet check valve means and fluid outlet check valve mean... | 09/05/1989 |
| 4818194 | Check valve assembly for fluid pressure intensifying apparatus A check valve assembly for fluid pressure-intensifying apparatus of the double-acting type is provided. The assembly has an inner low pressure poppet valve member communicable with the high pressure chamber of fluid pressure-intensifying apparatus, and an... | 04/04/1989 |
| 4798226 | Charging valve A charging valve consisting of a valve sleeve and a valve stem fixed in the interior thereof comprises a valve which acts by compression and tension, the tension or compression being exerted by resilient parts of the valve stem adjacent to both valves.... | 01/17/1989 |
| 4742841 | Water shut-off valve A coolant system and control valve used in a circuit for cooling spot welding tips. The control valve normally passes coolant to and from the tips. Should a break in the coolant flow occur because of a breakdown of one or more of the tips, the control val... | 05/10/1988 |
| 4602654 | Coupling for fire hydrant-fire hose connection A coupling for a fire hydrant-fire hose connection includes a first coupling member attached to the fire hydrant and a second coupling member attached to the fire hose wherein both the first and second coupling use a Storz connector. A butterfly valve is ... | 07/29/1986 |
| 4484597 | Homogenizer device, in particular for the production of whipped cream A homogenizer device, in particular for the production of whipped cream, comprising in combination, the following components: an external sleeve and an internal sleeve between which is formed a convoluted labyrinth, the internal sleeve housing a valve ele... | 11/27/1984 |
| 4467824 | Self-closing fire damper for duct A fire-damper has a support adapted to be secured in the duct and having a pair of pivots defining respective parallel and spaced-apart pivot axes traversing the duct. Respective damper flaps are pivotal on the pivots about the respective axes between an ... | 08/28/1984 |
| 4392507 | Two-stage pressure relief valve A two-stage valve adapted for use in downward flow in the fuel line of a vehicle to provide roll-over protection, comprising a housing having two ball check valves axially disposed to normally check upward flow, the lower ball being expansion-biased sprin... | 07/12/1983 |
| 4368752 | Compound check valve A compound check valve device comprising a housing having a pair of oppositely disposed inlet ports and an outlet port therebetween, a hollow, two-part valve carrier reciprocably operable in the housing between the inlet ports for selectively communicatin... | 01/18/1983 |
| 4366830 | Damper assembly A damper assembly is provided which comprises a duct having an opening and a blade movable between a closed position in covering relation to a portion of the opening and an open position. A fusible retainer holds the blade in its open position and release... | 01/04/1983 |
