Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8069876 | Sealing bush, hydraulic unit, and check valve There is disclosed a sealing bush as well as a hydraulic unit fitted with the sealing bush and a check valve. The sealing bush is made of plastic and has, on an end face, a preferably conical elevation that can be brought into sealing contact with a bearing shoulder... | 12/06/2011 |
| 7631656 | Pressure control valve A pressure control valve includes a housing, a piston within the housing, a biasing means within the housing for biasing the piston to seat in a first position for limiting fluid communication between an inlet port of the housing and an outlet port of the housing, a... | 12/15/2009 |
| 7395836 | Screwable check valve Disclosed is a check valve (5) that is screwed into a threaded bore (1) of a housing (2) of a hydraulic subassembly between a first pressure side (26) and a second pressure side (27) by means of an external thread (11) which... | 07/08/2008 |
| 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 |
| 7383833 | Valve for air tank A valve, possibly for use in a paintball marker, has a longer threaded portion that insures a canister that engages the valve must undergo many twists to become unscrewed from the valve. Alternatively, the valve has an elongated threaded portion with gas bleed chann... | 06/10/2008 |
| 7380569 | Valve body for backflow prevention valve A valve body main unit has a circular step surface facing a circular valve seat surface of a valve chamber formed on a terminal end part of a fuel supply path to a fuel tank and a circular groove with one groove wall extending from the circular step surface, and is ... | 06/03/2008 |
| 7370640 | Fuel feed unit The invention relates to a fuel feed unit (2) for a motor vehicle, comprising a volume flow reducing valve (13, 14) that is mounted in a pump fluid line (11, 12) leading to a suction jet pump (5, 6). Said volume flow reducing valve (13... | 05/13/2008 |
| 7367356 | Oil flow control valve for a cam phaser An oil flow control valve (10) for a cam phaser is described comprising a spool (18), a spool housing (16) and a check valve (40), wherein the spool (18) comprises a throughbore (60) and the check valve (40) is mounte... | 05/06/2008 |
| 7360557 | Low pressure drop check valve A check valve includes a valve housing having a first housing portion including an inlet and a second housing portion having an outlet. A poppet valve is received in the housing and includes an outer surface having a diameter greater than the diameters of the inlet ... | 04/22/2008 |
| 7353842 | Air fitting with an integral check valve An air fitting with an integral check valve includes a housing having an inlet and at least one outlet, a passage extending between the inlet and the at least one outlet with a valve seat being formed in the passage adjacent the at least one outlet with a portion be... | 04/08/2008 |
| 7331361 | Pressure relief valve with direct hydraulic damping To protect hydraulic assemblies, in particular to protect hydraulic brace systems, pressure relief valves 1 are used, the closing part 10 of which is formed by a piston 15, which is connected to the connection 4, and the valve spring reta... | 02/19/2008 |
| 7322373 | High accuracy low leakage valve for high pressure applications A high pressure valve assembly (10) comprising a valve sleeve (14) and a valve body (16) slidably mounted in the valve sleeve (14) is disclosed, the valve body (16) and valve sleeve (14) each having first ends (18, 56... | 01/29/2008 |
| 7318405 | Engine for vehicle An engine for a vehicle for which the work of replacing an oil filter or an oil cooler is easily executed. The vehicle engine is provided with a crank case, a cylinder head having an exhaust passage outlet in a front face, an oil pan being independently formed from ... | 01/15/2008 |
| 7290562 | Non-return valve What is disclosed is a non-return valve comprising a sealing piston which is biased against a valve seat in the basic position inside a valve housing, and which is manufactured by a plastics injection molding technique. ... | 11/06/2007 |
| 7264019 | Controlled-flow hydraulic distributor The hydraulic distributor exhibits a cylindrical and internally-hollow body (2) having an inlet chamber (3) for a fluid and an outlet chamber (4) which are interconnected directly (by a communication conduit), or indirectly by an external distri... | 09/04/2007 |
| 7247778 | Addressable pneumatic valve system An addressable valve system is described wherein a plurality of valves are embedded into a single, compact valve block. Each valve comprises a piston moving in a bore in the block. A magnet embedded in the piston is positioned within a coil. When energized, the coil... | 07/24/2007 |
| 7234486 | Pressure limiting valve for fuel injection devices A pressure limiting valve is provided which has a valve body assigned on the high-pressure side to a valve seat and an operating piston combined with the valve body to form a unit. The valve body and the operating piston are jointly spring-loaded and bound a pressur... | 06/26/2007 |
| 7231912 | Valve for air tank A valve, possibly for use in a paintball marker, has a longer threaded portion that insures a canister that engages the valve must undergo many twists to become unscrewed from the valve. Alternatively, the valve has an elongated threaded portion with gas bleed chann... | 06/19/2007 |
| 7207346 | Hydrostat for portable gas range Provided is a hydrostat for a portable gas range, which prevents the explosion of a gas container by automatically discharging overcompressed gas from the gas container when the inner pressure of the gas container increases to an explosion pressure. The hydrostat in... | 04/24/2007 |
| 7189067 | Scroll compressor having vacuum preventing structure A scroll compressor having a vacuum preventing structure includes: a casing forming a receiving space therein; a fixed scroll fixed to a main frame installed in the casing, and including a back pressure passage at an outer side surface thereof, a discharge pressure ... | 03/13/2007 |
| 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 |
| 7163008 | Valve for air tank A valve, possibly for use in a paintball marker, has a longer threaded portion that insures a canister that engages the valve must undergo many twists to become unscrewed from the valve. Alternatively, the valve has an elongated threaded portion with gas bleed chann... | 01/16/2007 |
| 7118352 | Hydraulic metering device The metering device for a liquid medium comprises a cylinder and a piston operatively disposed therein to define a metering chamber ahead of the piston. The outlet end of the cylinder is open and closed by an evacuation valve. The piston is driven forwardly through ... | 10/10/2006 |
| 7044157 | By-pass valve unit for a high pressure liquid delivery unit The unit of the invention comprises a motor-driven high pressure pump (11) having a delivery side (13) and a suction side (14), and a delivery gun (15) connected to the pump delivery side (13) by a delivery conduit (16) havi... | 05/16/2006 |
| 7028976 | Closure element, especially a valve cone for a continuous pressure valve A closing body is mounted in an axially displaceable manner in a bore of a fluidic valve to control a pressure medium flowing via the valve. The closing body has a sealing section, interacting with a seating edge of valve, and a guide section which serves to guide t... | 04/18/2006 |
| 7007708 | Flow control valve A valve mechanism to control fluid flow between a fluid pumping device and a system that includes an inlet from the fluid pumping device, a first valve, a second valve, a first outlet fluidly connected to the system, and a second outlet. The first valve prevents bac... | 03/07/2006 |
| 6978800 | Closure device with self-aligning poppet A closure device used in a fluid dispensing assembly. The closure device contains a housing, a poppet member, and a biasing member. The closure device provides a retaining structure for stabilizing and aligning the poppet member and biasing member within the housing... | 12/27/2005 |
| 6978801 | Backflow prevention valve A backflow prevention valve includes a cylindrical case member with an inflow opening at one end and an outlet at the other end or a peripheral surface or both, and a valve member contacting a peripheral edge of the inflow opening for closing the inflow opening. An ... | 12/27/2005 |
| 6971404 | Pressure protection valve A pneumatic valve (10) for selectively controlling fluid flow through a pneumatic system of a vehicle is disclosed. The valve (10) includes a housing (12) having a cavity (28). The cavity includes an inlet (16) and an outlet (18... | 12/06/2005 |
| 6971406 | Backflow prevention valve A backflow prevention valve includes a cylindrical case member having a plurality of holes formed in an upper end at a periphery thereof, a valve member disposed in the case member to be movable in an axial direction thereof, an urging device disposed in the case me... | 12/06/2005 |
| 6968858 | Check valve The check valve according to the invention significantly reduces the generation of noise by producing an asymmetrical circulation around the closing body causing a force resulting from the flow and acting on the closing body to have a transverse component in relatio... | 11/29/2005 |
| 6959727 | Siphonable check valve and method of making same A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending vanes or ribs in the inlet end about a portion of the circumference. The ribs are tapered in the flow direction to deflect the end o... | 11/01/2005 |
| 6953053 | Pressure relief valve assembly A relief valve assembly including a valve member, having inlet and outlet bores, for sliding movement within a valve body bore portion, having a cylindrical sleeve portion, journalled via a cylindrical sleeve bearing for substantially the entire axial extent thereof... | 10/11/2005 |
| 6938641 | Check valve A check valve comprises: a pair of cylindrical body elements (1, 4) through which a fluid passes; a cylindrical valve element (7), which is disposed inside an upstream-side one (4) of the cylindrical body elements (1, 4), constantly subje... | 09/06/2005 |
| 6915813 | Check valve A check valve including an outer body having a cylindrical inner bore and a shuttle within the inner bore which is arranged with an upstream, middle and downstream portion that each engage with a sliding fit the inner bore of the outer body being such that, when in ... | 07/12/2005 |
| 6877525 | Check valve for fuel pump A check valve for a fuel pump of a vehicle includes a valve housing adapted to be disposed in an outlet member of the fuel pump and a valve seat formed on the valve housing. The check valve also includes a valve member disposed in the valve housing and having a clos... | 04/12/2005 |
| 6769446 | Freeze protection device for wall hydrants/faucets A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A valve seat is located on ... | 08/03/2004 |
| 6736161 | Pressure regulating valve The invention relates to a pressure regulating valve comprising a valve body having one or more inlet openings and one or more outlet openings for a pressurized medium, an internal cavity connecting said inlet and outlet openings and a piston which is in contact wit... | 05/18/2004 |
| 6729347 | Device for pressure regulation The invention relates to a device (10) for pressure regulation, having a housing (11) and a closing body (12) received axially movably therein, wherein the housing (11) has at least one pressure medium inlet (21) and one pressure m... | 05/04/2004 |
| 6648016 | Valve assembly for a fuel tank A valve assembly for admitting a tube or fuel into a vehicle fuel tank is disclosed. The valve assembly has a fixed housing with an inlet, an outlet, a middle section and an inner surface with an opening. At least one projection depends from the inner sur... | 11/18/2003 |
