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 |
| 8176939 | Fluid pressure equipment provided with low sliding packing A packing attached to a spool of a spool valve has a ring-shaped inner-peripheral seal portion provided with an inner-peripheral seal face, a ring-shaped outer-peripheral seal portion provided with an outer-peripheral seal face, and an intermediate flexible portion ... | 05/15/2012 |
| 8167000 | Balanced solenoid valve A valve assembly includes a solenoid can having an internal coil. A valve body connected to the solenoid can includes an inlet port and a first valve seat. An axially adjustable retainer threadably connected to the valve body includes an end portion defining a secon... | 05/01/2012 |
| 8151824 | Balanced solenoid valve A valve assembly includes a solenoid can having an internal coil. A valve body connected to the solenoid can includes an inlet port and a first valve seat. An axially adjustable retainer threadably connected to the valve body includes an end portion defining a secon... | 04/10/2012 |
| 8100145 | LIFD valve assembly An LIFD valve assembly has a pressure balance device a pressure balance slide of which is urged in the opening direction by a pressure downstream of a metering aperture and in the closing direction by a control pressure preferably corresponding to the highest load p... | 01/24/2012 |
| 7980270 | Spool valve apparatus and method Some embodiments of the present invention provide a spool valve having a spool axially movable within a sleeve of two or more stacked rings having projections extending therebetween. One or more seals on the spool can slide across surfaces of the stacked rings in mo... | 07/19/2011 |
| 7950416 | Solenoid valve In a solenoid valve including a cylindrical sleeve which is formed with an input port, an output port, a drain port and a feedback port, and a spool which is inserted into the sleeve and which is formed with a plurality of lands for closing the individual ports, and... | 05/31/2011 |
| 7841361 | Electromagnetic hydraulic valve An electromagnetic hydraulic valve (1), in particular proportional valve, for controlling a device for the rotational angle adjustment of a camshaft relative to a crankshaft of an internal combustion engine, composed of an electromagnet (2) with a holl... | 11/30/2010 |
| 7823604 | Exhaust apparatus pressure control system A pressure control system is disclosed. The control system in one embodiment includes a main body comprising a pilot chamber wherein an intake port and a discharge port are formed, and a spool comprising an upper slide and a lower slide. The spool in this embodiment... | 11/02/2010 |
| 7784493 | Manual valve of a hydraulic pressure control system for an automatic transmission A manual valve of a hydraulic pressure control system for an automatic transmission includes: a valve body including a first exhaust passage that includes an exhausting hole and an intake hole that are communicated with a drive range port in a neutral range, such th... | 08/31/2010 |
| 7784494 | Flow divider A flow divider includes a spool for distributing fluid from a supply flow path to priority and surplus flow paths. First and second surplus restrictions vary flow rate in accordance with the movement of the spool and restrict the flow rate to the surplus flow path r... | 08/31/2010 |
| 7770597 | Spool valve device A spool valve system includes a valve main body with, from a first side to a second side, an input port to which an input pressure is supplied, an output port that outputs an output pressure, and a drain port that discharges the input pressure; and a spool that is s... | 08/10/2010 |
| 7748408 | Closing device A closing device for closing channels in which pressure fluid is conveyed in a housing. The closing device includes a sealing body that is designed as a sleeve member, the peripheral surface of which is arranged between the accommodating bore and the closing member ... | 07/06/2010 |
| 7650907 | Hydraulic control apparatus A hydraulic control apparatus for a single action cylinder includes a switch valve for supplying fluid to and draining fluid from the cylinder, a cylinder side passage connected to the cylinder, a switch valve side passage connected to the switch valve, and a valve ... | 01/26/2010 |
| 7628174 | Hydraulic control arrangement A hydraulic control arrangement is disclosed for the load-independent control of a consumer with a continuously adjustable distribution valve having a pressure compensator down the line. According to the invention, the pressure compensator has a single-sided damping... | 12/08/2009 |
| 7604022 | Manual valve of hydraulic control system for continuously variable transmission In order to minimize shift shocks during R→N and D→N manual shifts, in a manual valve of a hydraulic control system of a continuously variable transmission including a valve body having one input port and two output ports and a valve spool having a first land an... | 10/20/2009 |
| 7516758 | Spool-type manual valve with position-adjustable lever A manually actuated cartridge valve assembly (15) has a main body (31), a valve assembly (33), and an end assembly (35). Disposed within an internal cavity (107) of the end assembly (35) is a rotary member (109) that ... | 04/14/2009 |
| 7438088 | Electromagnetic pilot type directional control valve To obtain a directional control valve superior in workability and maintenanceability by mounting a pilot valve, a printed circuit board and the like on a top surface of a main valve section efficiently so that easy disassembly and assembly are achieved. A valve adap... | 10/21/2008 |
| 7431043 | Automatic transmission having a pressure regulator with flow force compensation An automatic transmission having a pressure regulator with flow force compensation. The pressure regulator includes a valve body having a valve bore and at least one inlet and at least one outlet adapted to provide fluid communication with a source of pressurized hy... | 10/07/2008 |
| 7422033 | Position feedback pilot valve actuator for a spool control valve A spool type control valve is operated by an electrically driven pilot valve. A pilot piston is attached to the control spool. As an electrical actuator moves the pilot spool, a greater pressure is applied to one side of the pilot piston than the other side, which c... | 09/09/2008 |
| 7412989 | Solenoid valve In a solenoid valve 10, an annular oil groove 66 is formed at a portion corresponding to a spring chamber 56 on the external surface of a sleeve 19, a drain passage 68 is formed to make an upper part of the annular oil groove 66... | 08/19/2008 |
| 7409937 | Hydraulic control system for internal combustion engine A hydraulic control system for an internal combustion engine, includes a driven mechanism driven by hydraulic pressure fed through a flowing passage change-over valve. The flowing passage change-over valve includes a valve body formed with a plurality of ports which... | 08/12/2008 |
| 7380571 | Directional control valve A valve accommodating hole (11), and each of a supply port (20), discharge ports (21 and 22), and output ports (23 and 24) connected to the valve accommodating hole are formed in a valve casing (15), and a valve shaft... | 06/03/2008 |
| 7380570 | Three-way valve for use with paintball markers A novel three-way valve comprising a valve body, a valve sleeve for adjustable position mounting within the body, and a valve stem movable so as to selectively form a pathway between line recesses in the valve sleeve. Three line recesses are used to form a three way... | 06/03/2008 |
| 7353744 | Hydraulic control The invention concerns a hydraulic control (1) with a supply connection arrangement (7) having a high-pressure connection (P) and a low-pressure connection (T), a working connection arrangement having two working connections (A, B) connectable with a c... | 04/08/2008 |
| 7343934 | Proportional pressure control valve with control port pressure stabilization A proportional pressure control valve which includes an electric first stage pilot having a single outlet port configured to provide a variable pressurized hydraulic fluid to the outlet port and at a pressure that is proportional to an electric input signal and whic... | 03/18/2008 |
| 7337807 | Hydraulic control valve with regeneration function The present invention A hydraulic control valve with a regeneration function, including a main body formed of a supply fluid passage to which pressurized fluid is supplied, at least one port, a tank fluid passage for discharging the pressurized fluid to an outside s... | 03/04/2008 |
| 7320337 | Fluid distribution and control valve and use thereof to supply enriched air to the occupants of an aircraft An apparatus and a method for fluid distribution and control. A valve body defines at least two pairs of chambers which are each connectable to an external fluid circuit. A mobile structure, which moves according to a controlling unit, forms an internal penetrating ... | 01/22/2008 |
| 7318814 | Medical suction valve A valve assembly includes a housing defining an aperture, a passageway, and a branch passage. The branch passage extends from the aperture and intersects and communicates with the passageway. The branch passage is disposed at an angle greater than 90 degrees with re... | 01/15/2008 |
| 7306009 | Hydraulic control valve A tandem hydraulic valve comprising first and second axially aligned valve spools, a valve guide slidably receiving said valve spools to control, in use, the connection between respective ports of the valve guide, said first and second spools being formed as separat... | 12/11/2007 |
| 7237694 | Food metering and dispensing device A pump apparatus for an adjustable metering and dispensing pump apparatus for food products including a product piston moving in a product cylinder, the product cylinder being connected to a food hopper and a dispensing nozzle. The pump apparatus also includes a cyl... | 07/03/2007 |
| 7228382 | Storage control apparatus and method thereof In a storage system having a first storage control apparatus and a second storage control apparatus, the first storage control apparatus has: a first memory; a second memory; an input/output control unit for data transfer information in the second memory; and a data... | 06/05/2007 |
| 7213501 | Hydraulic control arrangement A hydraulic control arrangement is disclosed for the load pressure independent control of a consumer, comprising a distribution valve forming an inlet metering orifice, a corresponding individual pressure compensator, a stop valve provided for each consumer connecti... | 05/08/2007 |
| 7213787 | Valves for annular conduits including aircraft fuel conduits and associated systems and methods Valves for annular conduits and associated systems and methods are disclosed. A fluid transmission system in accordance with one embodiment of the invention includes a first conduit having a first wall aligned with a flow direction in the first conduit and a second ... | 05/08/2007 |
| 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 |
| 7191799 | Annular port construction for valve applications A body element for a spool valve is provided that includes a body having an inner surface that defines an internal valving chamber having a longitudinal axis, and at least one transverse surface to the longitudinal axis. The transverse surface has at least one port ... | 03/20/2007 |
| 7189325 | Method and device for desalting water The invention pertains to a method and a device for desalting water by reverse osmosis, particularly for desalting seawater, in which saltwater is introduced under a first pressure into a pressure-compensation device and conducted from pressure-compensation device a... | 03/13/2007 |
| 7150288 | Control valve apparatus A control for parallel hybrid transmission has a valve mechanism, which is operable to supply fluid pressure to a torque-transmitting mechanism with or without the operation of the vehicle engine. The valve mechanism is responsive to an electrically driven pump to s... | 12/19/2006 |
| 7146998 | Hydraulic valve A stepped down groove 53 is provided around the peripheral surface of a rod portion 43 of a spool 40 which faces a third oil groove 33. Both the axial ends 53a and 53b of the stepped down groove 53 are l... | 12/12/2006 |
| 7117881 | Control system The invention relates to a control system, especially a hydraulic control system for a transmission, including a valve assembly, especially a directional valve assembly, designed for controlling a cooling system for a clutch and for ensuring a minimum level of press... | 10/10/2006 |
| 7104283 | Normally open hydraulic control valve A normally open hydraulic control valve includes: a linear solenoid unit; a spool driven by an output force of the linear solenoid unit to move forward; a valve body in which the spool is fitted; and a return spring for biasing the spool in a retreating direction. T... | 09/12/2006 |
