Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8171955 | Emergency relief vent for fuel storage tanks A relief vent assembly for a fuel storage tank includes a vent body defining a chamber to provide a substantially axially smooth and unencumbered path of flow for pressurized fluid to vent out from the tank. Such a path of flow allows the pressurized fluid to remain... | 05/08/2012 |
| 7464723 | Non-return valve A non-return valve includes a valve body (1) which defines an internal fluid through-opening (7) extending along the longitudinal axis (5) of the body. A seat body (17) defines a valve seat (31) arranged in the through opening (... | 12/16/2008 |
| 7182171 | Muffler with variable acoustic properties A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the pisto... | 02/27/2007 |
| 7121267 | Poppet for an integrated pressure management apparatus and fuel system and method of minimizing resonance An integrated pressure management apparatus, system and method for minimizing resonance of a poppet. A housing defines a fluid communication passage between ports. The housing includes a first portion, which extends along an axis, and has a first surface parallel to... | 10/17/2006 |
| 7107780 | Vacuum-breaking valve for a refrigerated compartment A vaccum-breaking valve comprising: a tubular body (10) mounted through one of the walls (P) of the cabinet (G) and having inner (11) and outer (12) ends, a valve seat (15) defining a fluid communication between the inside and the outside... | 09/19/2006 |
| 7066722 | Discharge valve for compressor A compressor assembly including a compressor mechanism, a compression chamber and a discharge chamber. A discharge port provides fluid communication between the compression chamber and the discharge chamber. A valve seat circumscribes the discharge port. A discharge... | 06/27/2006 |
| 6997208 | Valve suitable for use in an oil circuit of an internal combustion engine A valve, in particular for the oil circuit of an internal combustion engine. The valve includes a supporting dome, a valve body situated therein, a valve disk which is connected to the supporting dome and has an opening which can be closed by the valve body, and an ... | 02/14/2006 |
| 6997165 | Pressure control valve for a fuel system A valve has a housing defining an interior of the valve. The valve has a first passage in the housing and a second passage in the housing. The valve has a flow limiter movable between a first position at which the first passage is in fluid communication with the sec... | 02/14/2006 |
| 6964280 | Valve assembly for use in a hydraulic component A combination check valve and pressure relief valve is provided for use in regulating the flow of fluid between a first fluid side and a second fluid side. The combination check valve and pressure relief valve includes a valve plug, a valve guide moveably positioned... | 11/15/2005 |
| 6719544 | Valve for scroll compressor In a valve used in connection with a scroll compressor, a central profiled body is designed to protrude in an opening for outlet of gas from a compression stage, a outer axisymmetric surface of which is concave, of generally toroidal shape, and is terminated by a ti... | 04/13/2004 |
| 6615774 | Adjustable pressure actuated fuel/air diaphragm valve assembly A diaphragm valve assembly includes a diffusing screen, and a generally spherical lightweight membrane that provides a 360° circular seal. Spring loading enables variable resistance to be placed on the seal to allow the operator to adjust the internal pr... | 09/09/2003 |
| 6561143 | Engine induction valve with reduced backflow This invention is an effective engine induction valve which provides a decrease in engine blowback while maintaining engine power. This valve uses a moveable member made from a heat-setting material, this member being bent into an elliptical curve when th... | 05/13/2003 |
| 6514232 | Vacuum adjustment valve, particularly for thoracic drainage devices A vacuum adjustment valve, particularly for thoracic drainage devices, which comprises a valve body arranged in the air intake duct and tuning a first region connected to the intake duct and a second region connected to the drainage device. A regulator is... | 02/04/2003 |
| 6488049 | Super sensitive, full flow, adjustable pressure valve A high volume pressure valve accurately adjustable to within 0.25 PSIG for attachment to a pipe outlet. A flanged valve body and a cap are connected by a compression spring to permit the opening of the valve when the predetermined outlet pressure setting ... | 12/03/2002 |
| 6427711 | Inline check valve An inline check valve having a piston member and a seat in a valve body having a larger diameter at the end thereof away from the piston. The seat is retained within a groove by a seat retainer which prevents removal of the seat from the groove without de... | 08/06/2002 |
| 6336797 | Oiless rotary scroll air compressor air inlet valve An air inlet valve assembly for a rotary scroll compressor is disclosed. The rotary scroll compressor includes stationary and orbiting scroll elements which are intermeshed and nested to form at least one spiraling compression pocket therebetween, a drive... | 01/08/2002 |
| 6163895 | Plunger apparatus A multi-purpose water pressure plunger is provided having an adjustable valve with a regulating lever that is attached to a handle. The handle is connected to an anti-backflow valve. The anti-backflow valve is removably connected to a plunger head that is... | 12/26/2000 |
| 5979584 | Four-wheel drive transfer case controller In a vehicle which includes a front driveshaft for transferring motive power to a front set of wheels and a rear driveshaft for transferring motive power to a rear set of wheels and a clutch to control the amount of torque provided to the driveshafts, a m... | 11/09/1999 |
| 5979548 | Heat exchanger having heat exchange tubes with angled heat-exchange performance-improving indentations Disclosed is a heat exchange tube having angled heat-exchange performance-improving indentations on the tube. These angled performance-improving indentations increase the amount of heat transferred to a heat exchange liquid flowing through the tubes witho... | 11/09/1999 |
| 5832954 | Check valve assembly for inhibiting Helmholtz resonance A check valve assembly is disposed in a flow path of a high pressure hydraulic actuating system between a source of pressurized fluid and a pressure responsive mechanism to limit flow to a single direction therebetween. A valve housing defines a fluid pas... | 11/10/1998 |
| 5816291 | Shock absorber for liquid conduits A shock absorber in a liquid conduit (4) is provided. The shock absorber comprises a closed liquid tank (10), which is partly filled with gas and has a joint means (11) connected to the conduit (4). Via the joint means, liquid can flow to and from the tan... | 10/06/1998 |
| 5704390 | Automatic variable demand flow regulator An automatic variable demand flow regulator regulates water flow into a building based on variable supply and demand pressures. The regulator is positioned between a building and a water supply meter for the building. The regulator includes a piston that ... | 01/06/1998 |
| 5636659 | Variable area compensation valve A variable area restrictor is disclosed that is preferably used in a turbine engine to provide improved matching between the pressure required for aerofoil cooling and the somewhat lower pressure requirement for supplying air to the interstage seals and d... | 06/10/1997 |
| 5618057 | Continuously variable controlled orifice inflator An air bag inflation which includes a gas source and a gas outlet opening for allowing flow of gas from the gas source into the air bag wherein the flow of gas is controlled with a valve assembly including a piston disposed in a cylinder and features a pi... | 04/08/1997 |
| 5609359 | Pintle controlled orifice inflator An air bag inflator which includes a gas source and a gas outlet opening for allowing flow of gas from the gas source into the air bag wherein the flow of gas is controlled with a valve assembly including a piston disposed in a cylinder and features a pis... | 03/11/1997 |
| 5601112 | Check valve A check valve has a valve element 12 integral with a metallic bushing 11 and made of a substantially annular rubber material. A hole is provided in the center of the valve element, and a shaft 13 passes through the hole. A spring 2 is mounted around the s... | 02/11/1997 |
| 5427506 | Compressor pressure relief assembly A compressor assembly is disclosed including a compressor mechanism mounted within a hermetically sealed housing. A cylinder block assembly, containing a plurality of reciprocating pistons within compression chambers, is covered by cylinder heads. The com... | 06/27/1995 |
| 5323807 | Stop drop valve A check valve having a reduced or zero pressure drop and more particularly such a valve in combination with a spray nozzle. The check valve includes a sealed gas chamber which has within it a closed-cell foam element which insures that some gas remains in... | 06/28/1994 |
| 5289847 | Plate-type valve for a pressured-fluid machine, and a valving plate assembly therefor To minimize metal-to-metal engagements of valve components, and relative movements therebetween, as an end toward reducing wear, the valving plate has an integral bushing, and both the plate and the bushing are formed of a non-metallic material. The bushi... | 03/01/1994 |
| 5207242 | Angle dual check valve An angled check valve has a valve housing with an inlet for admitting fluid flow into the housing in a first direction and an outlet for discharging fluid flow from the housing in a second direction. The first direction and the second direction are genera... | 05/04/1993 |
| 5129419 | Pressure control valve A valve having a valve poppet which is positioned by the opposing forces of a spring and inlet fluid pressure, and a dashpot located out of the path of fluid flow through the valve for damping movement of the poppet during rapid changes in fluid pressure ... | 07/14/1992 |
| 5080122 | Non-return valve A valve body having an opening closed by a cover through which may be mounted or demounted a non-return obturator which is mobile along an upstream-downstream axis, the obturator being installed by first securing a first member to the valve body and then ... | 01/14/1992 |
| 5080130 | Gas compressor head and discharge valve construction A single or multi-cylinder compressor unit being cylinder wall ported and having suction inlet means to compression chamber means through the wall and top of piston means, wherein suction valve means comprises preferably a light-weight plastic disc means ... | 01/14/1992 |
| 5060685 | Safety cap for tire valve A safety cap (10) which is screwed onto an external thread (24) of standard tire valve (22) consists of a cylindrical body (11), a cup-shaped barrel (26) which is threaded onto an external thread (17) of the cylindrical body (11), and a control valve whic... | 10/29/1991 |
| 4915129 | Check valve A check valve comprises a frustoconical projection extending upwardly from a bottom surface of the valve body within a valve chamber and an elastic member provided with a plurality of elastic pieces extending downwardly from the valve for sliding on an ou... | 04/10/1990 |
| 4911196 | Inline check valve An inline check valve (10) has a valve body (12) with an enlarged diameter valve chamber (14) in which a cage assembly (44) is mounted. Cage assembly (44) has a cylindrical body (48) fitted about the outlet flow passage (18) and projecting in unsupported ... | 03/27/1990 |
| 4905656 | Emission control valve with internal spring A gas flow control valve for engine crankcase emissions includes an enclosure and a hollow valve element which is supported on a rod to permit sliding movements in response to a balance of forces produced by gas pressure and a closing spring located withi... | 03/06/1990 |
| 4886033 | Stabilized flow control valve A gas flow control valve for engine crankcase emissions includes an enclosure and a hollow valve element which is supported on a rod to permit sliding movements in response to a balance of forces produced by gas pressure and a closing spring located withi... | 12/12/1989 |
| 4834223 | Valve structure for telescopic hydraulic damper A telescopic hydraulic damper includes an outer tube filled with working oil, a pipe member mounted on the bottom of the outer tube, and an inner tube slidably disposed in the outer tube. A valve structure disposed in an inner end of the inner tube compri... | 05/30/1989 |
| 4744444 | Shock absorber An automotive vehicle shock absorber of the type having an alternately compressible and extendible body adapted to coaxial mounting of an oppositely reactive compression spring. The shock absorber comprises a piston rod, a piston carried thereby and an hy... | 05/17/1988 |
