Famous Patents
In 1879, Auguste Bartholdi received design patent number 11,023 titled "Design for a Statue". It was for the Statue of Liberty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7832995 | Variable displacement vane pump and method of manufacturing the same A variable displacement vane pump includes a first body, a second body, an adapter ring, a cam ring, and a rotor. The first body includes a cylinder portion, and a base portion covering a first longitudinal end of an inner space of the cylinder portion. The second b... | 11/16/2010 |
| 7484944 | Rotary vane pump seal A rotary vane pump is provided that provides an improved fluid replenishment and pressure relief system within a rotary vane pump system. A system, containing a rotary vane pump containing at least one relief cut between the housing and the rotor, functions to relie... | 02/03/2009 |
| 7393695 | Collider chamber apparatus and method of use of same The disclosed apparatus includes a stator and a rotor disposed for rotation within the stator. An inner wall of the stator defines one or more collider chambers. Rotation of the rotor causes movement of fluid disposed between the rotor and stator and establishes a r... | 07/01/2008 |
| 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 |
| 7247008 | Cam ring bearing for fuel delivery system A bearing assembly is provided for a fuel delivery system that includes a pump (10) having a housing that rotatably receives a rotor (20) carrying vanes (26) thereon, a cam ring (70) received between the housing and rotor (20), and... | 07/24/2007 |
| 7108493 | Variable displacement pump having rotating cam ring Vane pump (10) mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring (70) is supported by a journal bearing (80). A relat... | 09/19/2006 |
| 7101161 | Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate ... | 09/05/2006 |
| 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 |
| 7008199 | Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate ... | 03/07/2006 |
| 6974314 | Rotary compressor, method for manufacturing the same, and defroster for refrigerant circuit An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate ... | 12/13/2005 |
| 6824369 | Rotary variable expansible chamber-kinetic hybrid pump This invention concerns pumping fluids to both high pressures and high flow rates and thus has a very high power density. The technology pertains to both fluid power and to fluid transfer and is adaptable to a wide scope of use. The concept is a very simple rotary v... | 11/30/2004 |
| 6659744 | Rotary two axis expansible chamber pump with pivotal link This invention relates to expansible chamber positive displacement pumps, motors, and engines and includes variable displacement features. It provides a different method of making vane, piston, and roller abutment pumping devices which has benefits in sea... | 12/09/2003 |
| 6558132 | Variable displacement pump A variable displacement vane pump comprises a pump body having inlet and outlet ports, a rotor driven by a drive shaft and co-axially aligned therewith, a plurality of radially extending vanes slidably disposed in the rotor, and a slide pivotally disposed... | 05/06/2003 |
| 6527525 | Hydristor control means A variable pump or motor is providing including a housing with inlet and outlet ports and a vaned rotor. Spool ends are provided at either end of the rotor thereby enhancing the effective sealing of the pump and its overall efficiency. Piston actuators ar... | 03/04/2003 |
| 6503068 | Variable capacity type pump In a variable capacity type pump, in the inner diameter of a cam ring, an inner diameter of a portion forming a middle section between a suction section and a discharge section in a pump chamber is constituted by a negative slope curve in which an end por... | 01/07/2003 |
| 6497558 | Hydraulic pressure transformer A hydraulic pressure transformer for the conversion of an input hydraulic power to an output hydraulic power has a cam block. The cam block has a cam opening defining a pump section and a motor section. The pump section includes at least one pump inlet po... | 12/24/2002 |
| 6402487 | Control system for variable exhaust nozzle on gas turbine engines The present invention relates to a system that provides independently operated or controlled circuits in a single device. An exemplary application adapts a variable displacement roller pump into an engine geometry control system that uses one circuit of t... | 06/11/2002 |
| 6398528 | Dual lobe, split ring, variable roller vane pump A dual lobe, split ring, variable displacement roller vane pump is provided for supplying an aircraft engine varying amount of fuel. In a preferred application, the pump is used with a gas turbine engine. The pump includes a housing having an inlet and an... | 06/04/2002 |
| 6375435 | Static cam seal for variable displacement vane pump A variable displacement vane pump includes a pump housing having a cylindrical interior chamber, a cylindrical rotor member mounted for rotational movement within the interior chamber of the pump housing, a cam member mounted for pivotal movement within t... | 04/23/2002 |
| 6283736 | Hydrostatic pump or engine with infinitely variable debit or impulse The invention refers to a hydrostatic pump or engine with infinitely variable debit or impulse of the rotative type, constituted by an external and fixed body (1) of cylindrical shape, and whose symmetry axis coincides with the axis (4) of the rotor (3); ... | 09/04/2001 |
| 6200114 | Variable flow pump A pump having an inlet port, an outlet port and a pumping mechanism for pumping fluid from the inlet port to the outlet port. The pumping mechanism includes a carrier (2) that is provide with a plurality of pumping of pumping elements. The pumping mechani... | 03/13/2001 |
| 6126420 | Infinitely variable ring gear pump An infinitely variable ring gear pump comprising a stationary casing, an internal rotor (3) in said casing rotatably supported and driven by means of a shaft (2) and an external rotor (4) likewise rotatably supported, meshing with the internal rotor (3), ... | 10/03/2000 |
| 6022201 | Hydraulic vane pump with flexible band control A variable pump or motor is providing including a housing with inlet and outlet ports and a vaned rotor, the vanes being extensible against a shape controlled freely rotatable flexible band within the housing.... | 02/08/2000 |
| 5839889 | Infinitely variable vane-type hydraulic machine A hydraulic machine having a continuously variable displacement includes a vane rotor having a plurality of radial vanes thereon and a connection for a torque transmitting shaft driven by a prime mover such as an engine or an electric motor. A cam ring is... | 11/24/1998 |
| 5618165 | Variable displacement and constant pressure pump A pump comprising a pump housing (12) and a rotor (28) driven by a shaft (10), said rotor having at least two outwardly spring-biased elements (30). These lie in contact with the wall of a chamber (27) surrounding the rotor and transport, during rotation ... | 04/08/1997 |
| 5595067 | Energy pump A rotary vane/expansion device having a housing, a rotor with a shaft having an axis, a plurality of telescoping vanes extending radially outwardly from the axis to rotationally contact the inner wall of the housing. There is a movable housing which rests... | 01/21/1997 |
| 5243822 | Hydraulic rotary pump-turbine as a torque converter A variable flowrate and variable pressure oil operated hydraulic rotary pump turbine, having radial blades, comprised of an oil tight casing (1) full of fluid, holding therewithin a rotor (2) provided with slots wherein blades (3) are slidably mounted. Th... | 09/14/1993 |
| 4851723 | Coolant pump system for variable speed generators A coolant pump system for a variable speed generator includes a variable displacement pump mounted within the generator and coupled to the generator rotor such that the pump is driven at a speed proportional to the rotational speed of the generator rotor.... | 07/25/1989 |
| 4792295 | Variable volume rotary vane pump-motor units The invention comprises a variable volume rotary vane pump or motor having an improved sealing relationship between vanes radially extending from a rotor and the inner cylindrical surface of an outer sleeve. The improved sealing is performed by means of v... | 12/20/1988 |
| 4780069 | Directlly actuated vane-type pump In general terms the invention provides for a direct actuated pressure regulated vane-type pump having a adjustment piston which is under the influence of the pump pressure. The adjustment piston is coupled to said cam ring by means of a flexible or artic... | 10/25/1988 |
| 4764095 | Rotary slide compressor with thin-walled, deformable sleeve An apparatus, particularly for compressing and conveying fluids, comprising a rotor (1) and a thin-walled rotary sleeve (7) which is rotatably arranged eccentrically with respect to the axis (M1) of the rotor and which is in surface contact with the surfa... | 08/16/1988 |
| 4715338 | Rotary engine A rotary type internal combustion engine including an outer housing in which a rotor is rotatably mounted, the rotor having at least one pocket formed in the periphery and in which combustion gases expand to drive the rotor. A oscillating member is mounte... | 12/29/1987 |
| 4711619 | Vane fuel pump having reduced displacement at high speeds A variable displacement vaned fuel pump (10) is suitable for inclusion in a fixed displacement fuel control system for a gas turbine engine. The pump includes two track elements (34,36) having cam surfaces (42) which engage cam followers (44) on a cam act... | 12/08/1987 |
| 4697990 | Variable capacity vane pump with means to vary the area of overlap The invention relates to a vane pump having input and output slot means. Either the input slot means or the output slot means are designed such that for a movement of the cam ring into a position of zero excentricity the area of overlap between the input ... | 10/06/1987 |
| 4697996 | Rotary pump with adjustable cam ring The invention relates to a hydraulic vane type pump and to a radial piston pump. The cam ring of said pumps is adapted for horizontal and vertical movement. So as to achieve stable operating conditions for the pump at least within a certain range, a singl... | 10/06/1987 |
| 4688815 | Hydraulically driven bicycle A hydraulically driven bicycle frame with two axle members coupled to the bicycle frame and front and rear wheels mounted on such axles for rotation about the axis of the respective axle and a pair of pedals mounted on a pedal drive shaft coupled to the b... | 08/25/1987 |
| 4678412 | Adjusting apparatus for a vane pump or radial piston pump An adjusting arrangement for a vane or radial piston pump in which the forces applied outwardly to the cam ring are compensated by the application of hydraulic pressure to each of a plurality of sections about the ring. System pressure is applied to one s... | 07/07/1987 |
| 4634354 | Hydraulic pump A hydraulic pump of the type in which a cam ring and rotor are mounted within a rotor chamber formed between a cover and housing fixedly mounted together. An adjustment screw extends into the rotor chamber transverse to the axis of rotation for adjusting ... | 01/06/1987 |
| 4551079 | Rotary vane pump with two axially spaced sets of vanes A sliding vane type rotary pump having two sets of radially slidable vanes and two rotors, each vane set cooperating with a rotor to form a separate pump section with plural chambers. Each pump section is longitudinally spaced one from the other on a pump... | 11/05/1985 |
| 4496288 | Vane type pump with a variable capacity for power steering devices A vane type pump with a variable capacity for power steering devices is provided with a movable ring received and radially movable in a closed cylindrical bore of a pump housing. A spring acts on the movable ring to deflect the axis of the movable ring fr... | 01/29/1985 |
