Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7950414 | Regulating check valve and fuel injecton valve having the same A valve chamber is defined in a valve body of the regulating check valve. A first communicating hole and a second communicating hole communicate the valve chamber with a first flow passage and with a the second flow passage, respectively. A valve element is slidably... | 05/31/2011 |
| 7866339 | Pressure regulator for a fuel supply unit Disclosed is a pressure regulator for a fuel supply unit of a motor vehicle comprising a valve for joining a connection to an outlet above a designated pressure in the connection, a valve body and a valve seat, and a spring element for prestressing the valve body ag... | 01/11/2011 |
| 7699071 | Linear motor to pre-bias shuttle force A method of controlling one or more operating pressures within a subterranean borehole that includes a choke assembly is disclosed. The choke assembly may include a housing having an inlet passage, an axial bore, and a chamber, wherein a portion of the axial bore fo... | 04/20/2010 |
| 7357151 | Fluid control devices Improved fluid control devices are provided for metering pressure effectively in environments that may contain solid particles and in which the ambient pressure is subject to change. Such a valve comprises a valve body containing a plunger assembly contacting a firs... | 04/15/2008 |
| 7343929 | Pressure regulator incorporating a pressure balanced moving seat An adjustable pressure control valve includes a body having an inlet port and an outlet port and a handle assembly having a threaded portion and an adjustment knob. A seat assembly disposed within the body includes a seat holder in communication with the outlet port... | 03/18/2008 |
| 7308910 | Device for damping pressure surges A device for damping pressure surges in a fluid with a housing (10) and a piston (14) that can be longitudinally displaced inside the housing (10) against the pretensioning force of a spring energy store (12). The piston (14) inter... | 12/18/2007 |
| 7278402 | Device for conveying fuel out of a tank and to a combustion engine A diaphragm valve having a first chamber and a second chamber, which is separated from the first chamber by means of a valve member which cooperates with a valve seat. A first connecting conduit situated in the vicinity of the valve seat feeds into the first chamber... | 10/09/2007 |
| 7198060 | Pressure relieving coupler manifold with internal velocity fuse A decompression valve assembly is normally open thereby allowing thermal pressure build-up in an auxiliary circuit to be dissipated via a bleed path. During operation, the bleed path is sealed by a check valve, whereby high pressure flow can be fully directed to the... | 04/03/2007 |
| 7191795 | Venting valve having a cover cap A venting valve for a fuel vessel of a portable handheld work apparatus has a valve housing which includes a base body and a valve cover. A valve plate is mounted between the base body and the valve cover. The valve plate controls a pressure compensating channel con... | 03/20/2007 |
| 7125230 | Valve with operation parameter set at assembly and pump using same A valve is assembled by telescoping a first body component relative to a second body component until reaching a relative position that corresponds to a predetermined valve operation parameter, such as a valve opening pressure. The first body component is then fixed ... | 10/24/2006 |
| 7121812 | High pressure pump having replaceable plunger/valve cartridges A high pressure fluid jetting system generally includes a fluid cylinder pump, a drive assembly, a pressurized liquid supply and an applicator gun. The drive assembly includes a diesel engine or electric powered motor which drives a rotatable drive shaft. The drive ... | 10/17/2006 |
| 7117887 | Quick fill device An apparatus is adapted to be secured to a pressure regulator, relief valve, or any other valve and allows the user to control the position of the valve. According to one embodiment, the pressure regulator remains fully open until a desired maximum fill pressure wit... | 10/10/2006 |
| 7025329 | Needle valve for flow control A needle valve assembly for providing fluid flow control includes a motor; an internally threaded valve body; and an externally threaded plunger threadably engaged with the internally threaded valve body and rotatably and reciprocally driven by the motor, wherein th... | 04/11/2006 |
| 7021559 | Pressure regulating device for a pressurized dispensing vessel A pressure regulating device for regulating pressure in a pressurized dispensing vessel, the device comprising a cartridge for storing pressurized fluid; the cartridge being sealed by a cap assembly having an expandable chamber and a flow passage for communicating f... | 04/04/2006 |
| 7017605 | Valve assembly A valve assembly (112) includes a first member (120) having a cavity (136). A poppet (142) is located in the cavity (136) in the first member (120). The poppet (142) is axially movable relative to the first member ( | 03/28/2006 |
| 6959611 | Flow meter having a rebounding plate with a filter assembly A flow meter, particularly for warm water heating systems, includes a measuring element and an indicator element. The indicator element has a basic component with a cylindrical attachment extending into the collector pipe. An indicator rod with a rebounding plate ex... | 11/01/2005 |
| 6953052 | Fuel system shut-off valve A fuel system shut-off valve includes a valve body bounding a fuel space, the valve body having an inlet opening and an outlet opening communicating with the fuel space. A piston assembly in the fuel space includes a main piston member that is movable relative to th... | 10/11/2005 |
| 6945509 | Universal valve switch A universal valve switch for signaling the operative state of a valve assembly is disclosed that is attached to the body of the valve assembly using a bracketing arrangement. The valve switch comprises a housing defining a chamber and an aperture formed through the ... | 09/20/2005 |
| 6772787 | Vacuum regulator for maintaining a substantially constant vacuum in a vacuum system The invention relates to a vacuum regulator (1) for maintaining a substantially constant vacuum in a vacuum system (2). The vacuum regulator (1) includes a main valve arranged to control a supply of air to the vacuum system (2). The main ... | 08/10/2004 |
| 6716000 | Fuel pump delivery unit A fuel delivery unit (2) for delivering fuel from a tank (1) in which a support (6) connects a flange (4) to a surge chamber (5) through a pivot bearing (12). The pivot bearing (12) makes it possible to introduce the ... | 04/06/2004 |
| 6616837 | Apparatus for the optimization of the rheological characteristics of viscous fluids An apparatus for optimizing the rheological properties of a viscous fluid is particularly designed to reduce the viscosity of the fluid so that it may be more readily transported from a subsurface reservoir to the surface. The apparatus includes housing h... | 09/09/2003 |
| 6578601 | Liquid pressure regulator A liquid pressure regulator assembly includes an inlet portion through which the liquid enters the regulator assembly. The inlet portion includes a piston member which is engageable with a plunger portion. A housing portion encloses the plunger portion an... | 06/17/2003 |
| 6405803 | Differential flow control valve A downhole differential flow control valve is provided that utilizes a differential pressure area having one pressure area on which the wellbore pressure acts and a second area different from the first area on which pressure in the tubing acts. The differ... | 06/18/2002 |
| 6405722 | Single stage regulator and method for regulating compressed air therefor A single stage regulator is disclosed wherein a piston-type configuration is utilized to regulate an input working pressure as high as 4,500 PSI, to an output delivery pressure from 200 PSI to 1100 PSI. The single stage regulator can be used on paintball ... | 06/18/2002 |
| 6390199 | Downhole safety valve A safety valve for use in a wellbore formed in an earth formation, comprising a valve body having a fluid passage for passage of a stream of hydrocarbon fluid flowing from the earth formation via the wellbore to the earth surface, a closure member movable... | 05/21/2002 |
| 6374854 | Device for preventing permanent entrapment Device for preventing permanent entrapment that includes a hollow cylindrical body for installation in a suction line. A cylindrical chamber contained in body. A hollow entrappee member with grooves. Chamber contains entrappee member with sealing member, ... | 04/23/2002 |
| 6374852 | Leak arresting valve A flow control valve is disclosed wherein a housing defines a flow chamber with an inlet and an outlet. Disposed within the flow chamber is a telescoping poppet comprising an inner poppet and an outer poppet. A first spring is selected to bias the outer p... | 04/23/2002 |
| 6253787 | Fluid flow and pressure control system and method A system and method for controlling fluid according to which an inlet passage and an outlet passage are formed in a housing and a choke member is movable in the housing to control the flow of fluid from the inlet passage to the outlet passage and to exert... | 07/03/2001 |
| 6206649 | Process and apparatus for pressurizing fluid and using them to perform work A fluid pressurization apparatus utilizing a slanted cam disk to oscillate, or to oscillate and rotate a set of piston assemblies arranged in a circle. The motion of the pistons is utilized to pressurize fluid or to perform work. The piston assemblies hav... | 03/27/2001 |
| 6189984 | Hydraulically actuated stop valve and hydraulic brake system for a vehicle The invention relates to a hydraulically actuated cutoff valve which is provided as an intake valve for switching between a master cylinder and an intake side of a feed pump of a slip-controlled vehicle brake system. The invention sets forth that the cuto... | 02/20/2001 |
| 6148711 | Normally-closed diaphragm check valve A spring brake actuator being divided into a first spring brake chamber and a second spring brake chamber by a diaphragm extending across the actuator. A pressure plate is provided in the first spring brake chamber and rests on the diaphragm. A power spri... | 11/21/2000 |
| 6131607 | Delivery valve A delivery valve includes a body defining a chamber into which from one end thereof extends a tubular support member. The interior of the member is connected to the outlet of a fuel pump and an outlet extends from the chamber to a fuel nozzle. Slidable ab... | 10/17/2000 |
| 5961051 | Shower apparatus A shower apparatus reduces the effects of water hammer within a portion of a flow route connecting a shower head to a supply, when a flow adjusting mechanism proximal the shower head is operated. The shower apparatus adjusts pressure of a supply fluid dep... | 10/05/1999 |
| 5941276 | Starting valve The invention relates to a starting valve for progressive build-up of pressure in an installation through which pressure medium flows, in which a piston is movable to and fro in a housing between a closed and an open position. Means are also provided for ... | 08/24/1999 |
| 5918623 | Starting valve The invention relates to a starting valve for progressive build-up of pressure in an installation through which pressure medium flows, comprising a housing with a first opening for coupling to a first component of the installation and a second opening for... | 07/06/1999 |
| 5878949 | Temperature-actuated valve device and flow passage switching valve using such device A temperature-actuated valve device which comprises a body 5 provided with a fluid inlet opening 6b and a fluid outlet opening 5a, a vale seat 5b formed on the peripheral edge of the outlet opening 5a, a main valve body 8 which is disposed movably within ... | 03/09/1999 |
| 5860448 | Oil pressure supply valve for a traction control system An oil pressure supply valve for a traction control system, the structure of which is simple and small in size, that improves the function of the traction control system by securing enough flowing volume of the brake oil. The oil pressure supply valve inc... | 01/19/1999 |
| 5758683 | On/off circuit for a hydraulic system An on/off, protective circuit has a pressure line with an inlet for connection to a pressure source and an outlet for connection to the pressure port of a hydraulic system, such as a reciprocating conveyor. A relief valve is spring biased into a closed po... | 06/02/1998 |
| 5752547 | Fluid flow control valve A fluid flow control valve, comprising: a housing having an inlet connectable to a source of pressurized fluid, an outlet connected to the inlet via a connecting passageway, and a valve opening in the connecting passageway; a valve member movable to an op... | 05/19/1998 |
| 5730172 | Inlet valve for an air drier An inlet valve for an air drier between an inlet (35) from a compressor and an inlet bore (32) comprises an axially movable valve element (31), a spring (34) for biasing the valve element into a closing position against a seat (30'), and a valve element s... | 03/24/1998 |
