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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8186969 | Variable displacement pump A variable displacement pump includes: a pump section arranged to be driven by an internal combustion engine, and to discharge a lubricant introduced from an induction portion to a plurality of hydraulic chambers, through a discharge portion, by volume variations of... | 05/29/2012 |
| 8182238 | Variable displacement transmission pump control A system for controlling fluid flow rates in a transmission includes a pump having variable displacement and providing a pressurized fluid source, a regulating valve communicating with the fluid source and a pressure sensor, the pressure sensor producing a variable ... | 05/22/2012 |
| 8079826 | Vane pump with substantially constant regulated output A variable displacement vane pump provides a substantially constant output pressure in its regulated operation region. A longitudinal axis of the control spring is inclined, with respect to a plane through the rotational axis of a pivot and a contact point between t... | 12/20/2011 |
| 8007248 | Engine speed dependent oil pump pressure regulation In an exemplary embodiment, the momentum of oil-containing air rotating with a crankshaft counterweight in an engine crankcase is converted to static pressure by blocking the flow and directing the resulting static pressure through an orifice to a vent chamber where... | 08/30/2011 |
| 7985055 | Dual rotor oil pump of an engine with balance weight arrangement A balance shaft function may be realized without employing a balance shaft, when an oil pump includes an inner rotor fixed to the rotation shaft and an outer rotor that rotates with the inner rotor if at least one rotor of the inner and outer rotors has a mass cente... | 07/26/2011 |
| 7931450 | Variable displacement pump In a variable displacement pump, an outer peripheral surface approximately in an opposite side to a portion supported to an oscillation supporting point in a cam ring with respect to a pump shaft is formed as a convex surface portion holding a seal member brought in... | 04/26/2011 |
| 7862305 | Variable displacement vane pump A variable displacement vane pump, including a pump body, a driving shaft, a rotor, a cam ring swingable around a swing fulcrum, first and second support members on opposite axial sides of the cam ring, a suction port and a discharge port disposed on at least one of... | 01/04/2011 |
| 7862306 | Pressure regulating variable displacement vane pump A variable displacement engine oil vane pump includes a displacement control for controlling displacement of the pump. The control includes a cam ring in a housing pivotally connected to a wall of the housing by a pivot. The cam ring is internally engaged by slide v... | 01/04/2011 |
| 7845915 | Rotary pump A rotary pump for producing a pressure medium flow for a consumer, includes a pump housing in which a curved ring is inserted. A rotor is rotatably borne on a drive shaft in the curved ring. The rotor carries displacement elements at a tangential distance to one ano... | 12/07/2010 |
| 7802971 | Controller for a variable displacement feed pump The disclosure relates to a feed pump for hydraulic media having an input and an output. A pressure-reducing element is connected to the output, at the output of the element the system pressure being present and the output being connected to a consumer, wherein the ... | 09/28/2010 |
| 7682135 | Variable displacement pump In a variable displacement pump, a first groove always connected to a second hydraulic chamber is provided in a slide surface of a cam ring facing to an end surface of a side plate, and a second groove always connected to a suction port is provided in the end surfac... | 03/23/2010 |
| 7674095 | Variable displacement vane pump with variable target regulator A variable displacement vane-type fluid pump is provided which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for internal combustion engines at all speeds with minimized use of power. Of course,... | 03/09/2010 |
| 7549848 | Device for adjusting the pumping capacity of a lubricant pump for an internal combustion engine A system for controlling the pumping capacity of a lubricant pump for an internal-combustion engine, having a vane cell pump (2) which has a rotor body (4), rotor blades (10) which can be radially displaced in the rotor body as well as a lifting... | 06/23/2009 |
| RE40554 | Capacity modulated scroll machine having one or more pin members movably disposed for restricting the radius of the orbiting scroll member A scroll-type machine is disclosed which is particularly well suited for use as a compressor in refrigeration and air conditioning systems and incorporates a unique arrangement for modulating the capacity thereof. In one group of embodiments the capacity of the scro... | 10/28/2008 |
| 7399166 | Variable displacement pump A variable displacement pump includes a control valve formed with a high-pressure chamber for introducing therein high-pressure fluid on the upstream side of a metering orifice, a pressure chamber for introducing therein pressure fluid on the downstream side of the ... | 07/15/2008 |
| 7396214 | Variable displacement pump and control therefor A control system for a variable displacement pump. The control system is operably associated with an engine control unit for passively or actively controlling the output of the pump in response to signals from the engine control unit. ... | 07/08/2008 |
| 7344361 | Variable-delivery vane pump A variable-capacity vane pump comprising a body (1) comprising a cavity (2) in which a mobile ring (3) can move, inside which a hub (4) is located which is rotatable around a fixed axis (R) and equipped with vanes (5) which during ... | 03/18/2008 |
| 7318705 | Variable displacement pump with communication passage A variable displacement pump includes a rear cover and side plate arranged on both sides of a cam ring and making slide contact with the cam ring. The rear cover has an end face on the side of the cam ring, which is formed with a suction port. A seal member is arran... | 01/15/2008 |
| 7281910 | Motor driven compressor A motor driven compressor having a motor for driving a compression mechanism includes a connecting portion for connecting between an external terminal for supplying electricity to the motor and a wire end portion of a stator of the motor. The connecting portion is l... | 10/16/2007 |
| 7207785 | Vane pump wear sensor for predicted failure mode A vane pump is disclosed for use with gas turbine engines that is adapted and configured to provide a failure mode similar to that of a traditional gear pump. The vane pump includes a pump housing, a cam member, a cylindrical rotor member and a mechanism for communi... | 04/24/2007 |
| 7207782 | Vacuum pump A rotating vane vacuum pump has a secondary inlet (4) which permits additional suction after the primary inlet (3) has closed. ... | 04/24/2007 |
| 7207783 | Variable displacement pump Within a cam ring (8), a rotor having a plurality of vanes (27) is eccentrically disposed. A metering orifice (136) is provided halfway on a discharge passage (135) of pressure fluid discharged from the pump, and a control valve is activa... | 04/24/2007 |
| 7179061 | Multi-layer compressor housing and method of manufacture A multi-layered compressor housing and method of manufacture is provided. The housing defines an interior space and includes first and second layers having first and second major surfaces respectivley. The first and second layers are secured together by the friction... | 02/20/2007 |
| 7179143 | Outboard motor steering system An outboard motor steering system for an outboard motor mounted on a stern of a boat and having an internal combustion engine and a propeller with a rudder powered by the engine to propel and steer the boat. The system includes a swivel shaft connected to the propel... | 02/20/2007 |
| 7128542 | Variable displacement pump In a hydraulic pump, a cam ring is provided in a cylindrical adaptor for movement in a radial direction, and a differential pressure control valve is provided to control internal pressure and load pressure at the front and back sides of a variable orifice to be intr... | 10/31/2006 |
| 7106587 | Fluid moving device with a radiation module A fluid moving device with a heat radiation, which is mounted to a conductive part to dissipate heat from a heat generation part under the fluid moving device and another heat generation part around the first heat generation part, includes a first frame member, whic... | 09/12/2006 |
| 7083394 | Vane pump with undervane feed A vane pump is disclosed for use with gas turbine engines which has pressurized fluid supplied to the undervane portion of the vane elements to balance the forces imparted thereon. The vane pump includes a pump housing, a cam member, a cylindrical rotor member and a... | 08/01/2006 |
| 7070399 | Variable displacement pump with a suction area groove for pushing out rotor vanes A variable displacement pump has a cam ring, a rotor, a plurality of vanes, a pressure plate and a rear body. The cam ring is accommodated within a pump body. The rotor rotates within the cam ring. The plurality of vanes are inserted retractably into slits formed at... | 07/04/2006 |
| 7052252 | Port configuration for fuel pump unit for facilitating pressure feedback An oil pump unit includes an additional outlet port connected to the downstream side of the pump through the pump cover. With this additional port, the oil pump unit is able to have electronic vacuum and pressure sensors upstream and downstream of the pump for remot... | 05/30/2006 |
| 7018178 | Variable displacement pump and control therefore for supplying lubricant to an engine A control system for a variable displacement pump. The control system is operably associated with an engine control unit for passively or actively controlling the output of the pump in response to signals from the engine control unit. ... | 03/28/2006 |
| 6976830 | Variable displacement pump Within a cam ring (8), a rotor having a plurality of vanes (27) is eccentrically disposed. A metering orifice (136) is provided halfway on a discharge passage (135) of pressure fluid discharged from the pump, and a control valve is activa... | 12/20/2005 |
| 6913446 | Method for improving the efficiency of a variable displacement pump An auxiliary solenoid controlled variable displacement power steering pump, hydraulic systems incorporating same, and method for improving the efficiency of variable displacement power steering pumps. In one embodiment, a rotor is arranged within a pump body, and a ... | 07/05/2005 |
| 6896489 | Variable displacement vane pump with variable target regulator A variable displacement vane-type fluid pump is provided which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for internal combustion engines at all speeds with minimized use of power. Of course,... | 05/24/2005 |
| 6874996 | Compressor having independently driven members The hybrid compressor apparatus is composed of a compressor in which fluid is compressed by varying a volumetric capacity of a compression space provided between a first compression member and a second compression member, which are movable independently of each othe... | 04/05/2005 |
| 6821093 | Flow meter A fuel metering unit including a pump having a rotor with a plurality of slots. The pump also includes a pivotally movable cam ring coaxially arranged with respect to the rotor. Vanes are slideably disposed in the slots for maintaining contact with the cam ring duri... | 11/23/2004 |
| 6817438 | Apparatus and a method for adjusting fluid movement in a variable displacement pump A variable displacement pump is provided. A pump body has an outer ring defining an inner cavity, where the inner cavity further defines a pump suction path and a pump discharge path in fluid communication with the inner cavity. A cam ring is pivotably supported in ... | 11/16/2004 |
| 6790013 | Variable displacement vane pump with variable target regulator A variable displacement vane-type fluid pump is provided which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for internal combustion engines at all speeds with minimized use of power. Of course,... | 09/14/2004 |
| 6786702 | Fuel metering unit A fuel metering unit including a pump having a rotor with a plurality of slots. The pump also includes a pivotally movable cam ring coaxially arranged with respect to the rotor. Vanes are slideably disposed in the slots for maintaining contact with the cam ring duri... | 09/07/2004 |
| 6736604 | Control apparatus of variable displacement pump for power steering apparatus First and second fluid pressure chambers are formed in both sides of a movement direction of a cam ring swingably placed within a pump body. A spool of a control valve is moved due to a pressure difference between the front and back of a metering orifice. Fluid pres... | 05/18/2004 |
| 6722856 | Vane-cell pump The invention relates to a vane-cell pump comprising a pump rotor (20), provided with a radially displaceable rotor blade (22). Said pump rotor is mounted in a pump stator (12) which can be pivoted inside a pump bearing house (10) around ... | 04/20/2004 |
