Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8028717 | High throughput double valve with reduced outlet pressure during a faulted state A double valve having inlet, outlet, and exhaust ports maintains an outlet pressure below one percent of inlet pressure during a faulted state while maintaining a relatively small exhaust for reduced overall valve size. Crossover passages receive inlet pressure thro... | 10/04/2011 |
| 7958907 | Fluid pressure circuit A fluid pressure circuit that can, in either case where a first actuator that is fed from a first pump or a second actuator that is fed from a second pump is operated, by allowing feeding of the hydraulic fluid to a specific actuator from either the first or second ... | 06/14/2011 |
| 7823602 | Hydraulic system having at least one hydraulic valve for actuating a component A hydraulic system having at least one hydraulic valve for actuating a component, wherein a control pressure acting on the hydraulic valve can be activated through a supply pressure of a pilot circuit having at least one actuator. At least one pressure reduction app... | 11/02/2010 |
| 7673652 | Hydraulic pressure control device for automatic transmission There is provided a circuit configuration which does not require an additional fail-safe mechanism caused by the addition of a changeover valve in a hydraulic pressure control device for an automatic transmission having a function to directly supply a line pressure ... | 03/09/2010 |
| 7607454 | Vacuum and vacuum-breaking composite valve A composite valve includes a main valve unit that individually opens and closes a vacuum channel for applying vacuum pressure to a load and a pressure channel for supplying vacuum-breaking pressure fluid with two valves for vacuuming and pressurizing; a channel comb... | 10/27/2009 |
| 7490625 | Pilot valve manifold A valve manifold includes a valve body carrying pairs of laterally spaced piston actuated valves controlled by control modules operative to selective pressurize and exhaust an outlet port connected to a fluidic device and configured in grouping permitting varying va... | 02/17/2009 |
| 7438086 | Dynamic fluid power monitoring system for separate actuators A control valve apparatus couples pressurized fluid to first and second actuators using first and second double valves. The first double valve includes first and second crossover passages and first and second pilots. The second double valve includes third and fourth... | 10/21/2008 |
| 7399347 | Control valve structure for an oxygen machine A control valve structure for an oxygen machine uses a motor to link a disc to spin, which activates a pair of valve rods to open and close in sequence through rotation of the motor to control air flow. ... | 07/15/2008 |
| 7392971 | Infinitely variable directional valve Disclosed is an infinitely variable directional valve comprising a seat slide on which a valve cone is formed which is prestressed counter to a valve seat in the initial position of the directional valve. The directional valve is configured with a pilot control devi... | 07/01/2008 |
| 7328720 | Solenoid valve To construct solenoid valves used as a solenoid assembly by assembling the solenoid valves in a group so that both collective wiring and individual wiring can be performed and the solenoid valves can be simultaneously cut off from a collective wiring power supply an... | 02/12/2008 |
| 7325781 | Automatic bathroom flushers with modular design A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 02/05/2008 |
| 7320335 | Electrohydraulic control device A electrohydraulic control device H for the direction control of a hydro-motor, particularly for working pressures u to more than about 450 bar in a portable working device, comprises working lines A, B and a pressure line P and a respective load holding valve LA, L... | 01/22/2008 |
| 7300375 | Hydraulic circuit for the control of a drive train A hydraulic circuit for the control of a double clutch transmission which has two transmission groups, each with an isolating clutch and with a plurality of shift clutches for the engagement and disengagement of gear steps, the hydraulic circuit having for each tran... | 11/27/2007 |
| 7293580 | Valve The valve includes a body having five surfaces and a plurality of blind holes, grooves and channels interconnected with the blind holes to form communication net. Two rectangular diaphragms are embedded separately into the grooves so as to selectively open and close... | 11/13/2007 |
| 7270142 | Inflation device with automatic disconnect An apparatus that injects fluid into an inflatable device, dynamically monitors the pressure inside the device, and automatically terminates the inflation and disconnects from the inflatable device when the pressure inside the device reaches a predetermined value pr... | 09/18/2007 |
| 7270046 | Integrated valve assembly and computer controller for a distributed hydraulic control system A distributed hydraulic system locates a control assembly, that has electrohydraulic valves and a electronic controller, adjacent the respective hydraulically powered actuator controlled by that assembly. The control assembly includes a manifold block with ports to ... | 09/18/2007 |
| 7213612 | High pressure ball-poppet control valve with flow control A control valve for operating a fluid-actuated device includes a fluid inlet, a fluid outlet and a passage in fluid communication between the fluid inlet and the fluid outlet, the passage defining a longitudinal axis. A valve seat is disposed in the passage and incl... | 05/08/2007 |
| 7210502 | Microvalve device suitable for controlling a variable displacement compressor A device is disclosed for controlling a variable displacement compressor. The device comprises a microvalve operated control valve. A microvalve device for controlling fluid flow and a micro spool valve for use as a microvalve are also disclosed. ... | 05/01/2007 |
| 7207353 | Pilot controlled multiway valve A multiway valve has valve housing and at least one pilot valve arranged in it. The principal valve housing possesses an integral principal housing part wherein at least the control section of a valve spool is arranged. The pilot valve possesses a head piece which i... | 04/24/2007 |
| 7204273 | Valve island with a pilot air path located on the side of a sub-base A valve island that has a pilot fluid passageway located on the side of the sub-base is disclosed. The pilot fluid passageway is formed into one side of the sub-base and couples the front end of the sub-base with the back end of the sub-base. A gasket or sealing dev... | 04/17/2007 |
| 7188822 | Enclosures for automatic bathroom flushers A bathroom flusher includes a flusher body, a valve assembly, an electronic control system, and a flusher cover. The flusher body includes an inlet and an outlet, and is designed to accommodate the valve assembly that controls water flow between the inlet and the ou... | 03/13/2007 |
| 7185673 | Safety device for fluid operated machines The supply of operating air or oil to a press, shears or like machine is controlled by a pair of spool valves connected in series and each operates a pair of switches. The switches connect DC current to the solenoids via external relays which open and close the valv... | 03/06/2007 |
| 7177709 | Controller for underground mining A controller is disclosed for control operations in underground mining, especially for controllers to control support shields. The controller utilizes a central unit with a microprocessor and assigned, programmable memory devices for the storage and processing of so... | 02/13/2007 |
| 7159662 | System for controlling a hydraulic actuator, and methods of using same The present invention is directed to a system for controlling a hydraulic actuator, and various methods of using same. In one illustrative embodiment, the system comprises a first hydraulic cylinder, an isolated supply of fluid provided to the first hydraulic cylind... | 01/09/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7153422 | Liquid additive slow-release apparatus driven by a filter pressure gradient The present invention provides a filter assembly containing a filter element and a container as a depot for a liquid additive. The container can include an inlet and an outlet, which are configured to allow a liquid to flow into the container mix with the contained ... | 12/26/2006 |
| 7150292 | Electropneumatic double control valve comprising a sealing arrangement Electropneumatic double regulating valve for an air-operated vehicle brake system, which is disposed centrally on a wheel axle, equipped with two brakes, with a common relay valve housing (1), in which is integrated for each brake an assigned regulating valve... | 12/19/2006 |
| 7147006 | Pilot operated valve A valve assembly having a fluid switch and a main valve for controlling fluid pressure in a working volume in three control states wherein the main valve has three ports for fluid, flow of fluid through a first port and a second port being controlled by the fluid sw... | 12/12/2006 |
| 7117889 | Three-way valve The object of the present invention is to provide a three-way valve reduced in the number of component parts and man-hours for assembling the component parts. A pressure chamber of a piston for urging a first main valve in a valve-closing direction by a spring, and ... | 10/10/2006 |
| 7114521 | Double valve constructed from unitary single valves A double valve is constructed from first and second unitary valve assemblies each having a respective inlet port, a respective outlet port, a respective exhaust port, a respective first cross-mirror port, and a respective second cross-mirror port. A first plate is c... | 10/03/2006 |
| 7100639 | Control valve The invention relates to a control valve (10) for controlling the pressure and flow of hydraulic oil from or to the working connections (A, B) of a consumer. The pressure and the pressure flow are controlled by means of at least one sliding piston which can b... | 09/05/2006 |
| 7086276 | Temperature correction method and subsystem for automotive evaporative leak detection systems A method and sensor or sensor subsystem permit improved evaporative leak detection in an automotive fuel system. The sensor or sensor subsystem computes temperature-compensated pressure values, thereby eliminating or reducing false positive or other adverse results ... | 08/08/2006 |
| 7069728 | Multi-position BOV actuator A multi-position pressurized fluid actuator is mounted for movement in a casing. The actuator includes at least one selectively openable opening at a location corresponding to an intermediate position through which pressurized fluid can be selectively bled from the ... | 07/04/2006 |
| 7069941 | Electronic faucets for long-term operation An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op... | 07/04/2006 |
| 7044431 | Electromagnetically actuated valve system and valve device The invention relates to a valve system comprising a housing, an actuator, a main valve disposed between an inlet chamber and an outlet chamber, and a pilot chamber. Said pilot chamber is linked with the outlet chamber via a main valve, comprising at least one pilot... | 05/16/2006 |
| 7040716 | Anti-lock brake system for vehicles A high reliability and low power consumption anti-lock brake system is disclosed in the present invention. The two pilot valves in the present invention are controlled so as not to be energized concurrently. The secondary battery of the anti-lock brake system is cha... | 05/09/2006 |
| 7040301 | Fuel system with integrated pressure management A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak dia... | 05/09/2006 |
| 7025090 | Fluid flow control valves A fluid flow control valve system has a plurality of pairs of 3 port, 2 position (3/2) control valves (6, 6′) each valve being movable between its two positions by a pair of electrically-operable actuators (1, 2). A logic controller selectively gener... | 04/11/2006 |
| 7025084 | Integrated pressure management system for a fuel system An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head spa... | 04/11/2006 |
| 7021332 | Hydraulic valve section with reduced bore distortion A spool valve section for a multiple valve assembly has a body with two opposing side surfaces. A plurality of mating surfaces are raised from each side surface. The mating surfaces surround the openings of fluid passages through the section and apertures for fasten... | 04/04/2006 |
