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| Number | Title | Issue Date |
| 8029939 | Fuel cell ejector with integrated check valve An ejector for a fuel cell stack is disclosed, wherein the ejector includes an integrated check valve that supports hydrogen recirculation and militates against a backflow of hydrogen flowing through the ejector. ... | 10/04/2011 |
| 7406954 | Fuel pump check valve A high-pressure fuel pump (10) used in a fuel system includes an electric motor (14) having a drive shaft (16) to which is attached a pumping element (18). A fuel inlet passage allows low-pressure fuel to be drawn into the pump, and a fue... | 08/05/2008 |
| 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 |
| 7104472 | Constant velocity turbine and stator assemblies A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine... | 09/12/2006 |
| 7040320 | Valve device for controlled supply of a pressure fluid A valve device for controlled supply of a pressure fluid, having a housing (2) with a supply chamber (3) for the supply of a pressure fluid from an inlet (4) connected to a pressure fluid source, and having an outlet (5) communicating wit... | 05/09/2006 |
| 6955755 | Liquid filter comprising a valve arranged in a support tube of a filter element A liquid filter including a valve arranged in a supporting tube of a filter insert, in which the valve is fixed by a disk (60) which is oversized relative to a mounting opening (61), so that reliable sealing to the edges of the disk is facilitated. Use... | 10/18/2005 |
| 6921030 | Constant velocity turbine and stator assemblies A rotary sprinkler system for both above-the ground and pop-up rotary sprinkler systems that controls the rate of nozzle rotation is disclosed. To maintain a relatively constant and controlled nozzle rotation, one or more chamfered spokes are included on the turbine... | 07/26/2005 |
| 6779554 | Return check valve The invention relates to a backflow preventing check valve (1) comprising a housing (2) in which a closing member (3) is arranged. The closing member is moveable between a closed position and an open position and is disposed on a valve seat with... | 08/24/2004 |
| 6742995 | Air compressor assembly An air compressor assembly with one or more of the following features: a removable manifold assembly capable of being remotely located from the air compressor assembly for controlling and distributing compressed air from the air compressor assembly to one or more ai... | 06/01/2004 |
| 6481464 | Check valve A check valve which tends to be free from clamp damage and has a satisfactory pressure loss balance even if being used with a gasohol. The check valve comprises a fluorosilicone rubber having: (A) a tear strength of not smaller than 150 N/cm; (B) an initial 10... | 11/19/2002 |
| 6264290 | Single-operation valve assembly for braking systems and the like A single-operation valve assembly useful in such braking system applications, as well as others, includes a flow passage and a valve member located within the flow passage at a first position in which the valve member prevents fluid flow from an upstream ... | 07/24/2001 |
| 6129714 | Medical drainage means An urinary drainage unit including a fluid-tight bag of a material, a major portion of which is flexible. The bag includes a liquid inlet and a gas outlet, both situated at a top of the bag which includes a liquid outlet at its bottom. The unit also inclu... | 10/10/2000 |
| 6039074 | Pressure-induced shut-off valve for a liquid delivery system A pressure-induced shut-off valve for a liquid delivery system with a back pressure regulator having a positive shut-off capability is provided. The pressure-induced shut-off valve may incorporate an integrated purge valve or an integrated cross flow nebu... | 03/21/2000 |
| 5837204 | System for disinfecting the water lines of a dental unit A system for disinfecting the water lines of a dental unit is provided with first and second unidirectional check valves. Water at a first pressure is normally supplied to the water lines of the dental unit through the first check valve. A reservoir of li... | 11/17/1998 |
| 5819793 | Breather valve A breather valve has a valve body having a fluid passageway terminating in a valve seat, and a pressure pallet having a size commensurate with the valve seat. The pressure pallet has a sealing side oriented to face the valve seat, and is mounted for limit... | 10/13/1998 |
| 5693219 | Apparatus for backwashing a water filter An adapter valve for backwashing a water filter is releasably connected between the water filter housing cover and enclosure. The adapter valve includes a body having a source port for fluid communication with an inlet port of the cover, a storage port fo... | 12/02/1997 |
| 5669410 | Air flow rate regulation apparatus for air pump An air flow rate regulation apparatus is used for regulating a flow rate of discharge air of an air pump used for breeding aquarium fishes. The apparatus includes a cylindrical control member having a hollow chamber defined thereinside and a regulation ho... | 09/23/1997 |
| 5623974 | Spray product and pump to supply air under pressure to the dispenser A dispenser having a manually-operated dispensing valve assembly has a container for accommodating a spray product. The bottom of the container has a recess adapted to cooperate with a tube used to deliver air under pressure from an air pump into the cont... | 04/29/1997 |
| 5558121 | Fluid actuated ball check valve assembly A fluid actuated ball check valve assembly having an annular housing containing a ball valve. The annular housing has a first end and a second end. The annular housing defines a fluid passageway having a passageway axis extending therethrough. A fluid act... | 09/24/1996 |
| 5501242 | Pressure relief valve A pressure relief valve includes an apertured ball valve element which is spring loaded and is rotatably and axially mounted in the valve bore so that when an over pressure situation arises fluid forces the ball axially off the valve seat against the forc... | 03/26/1996 |
| 4929229 | Breastpump having improved valve mechanism An improved breastpump has a valve which closes off a path to a milk container in the presence of a negative pressure in the valve, and opens the path when the pressure is removed. The valve consists of a housing and a thin flexible membrane that is remov... | 05/29/1990 |
| 4528999 | Pressure relief device for pipes A pressure relief device for pneumatic conveying lines to serve as a safety device in the event of an explosion or sudden pressure increase within the conveying line. The device includes a pair of semi-cylindrical shells normally joined together by a shea... | 07/16/1985 |
| 4401224 | Feeding bottle for infants An infant's feeding bottle employing a valve to assure approximately atmospheric pressure within the bottle during feeding, the valve and valve stem being of like material and of simple unitary construction whereby to avoid numerous problems such as rust,... | 08/30/1983 |
| 4271862 | Check valve and method of manufacturing said check valve A check valve having a predominantly cylindrical housing, a sealing diaphragm comprising a thin, tubular slip and at one extremity a radially outwardly extending fastening flange, said flange being clamped between an uninterrupted inner shoulder in the ho... | 06/09/1981 |
| 4023591 | Valve of particulated material for vertical forced air channel A one way insulating valving structure for a vertical channel having upwardly moving forced air providing a mass of particulated low density material such as plastic carried in a permeable enclosure and movable from a gravity biased lower sealing position... | 05/17/1977 |
