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| Number | Title | Issue Date |
| 7811064 | Variable displacement reciprocating pump A variable displacement reciprocating pump with pumping rate that is adjustable from zero to maximum stroke while the pump is running. Stroke is varied by changing relative position of pairs of eccentric inner and outer cams that drive the pump's plungers. The pump'... | 10/12/2010 |
| 7611334 | Pump with variant strokes A pump with variant strokes has a body, a piston assembly and a decelerating member. The body and the decelerating member are respectively mounted adjacent to the piston assembly. A holder is mounted in the piston assembly and has multiple openings. When the deceler... | 11/03/2009 |
| 7563076 | Variable rate pumping system A pumping system comprising a motor, wherein the motor has an operating speed, a pump coupled to the motor, wherein the pump has a volumetric displacement, a fluid end coupled to the pump, wherein the fluid end is operable to draw fluid from an input and provide flu... | 07/21/2009 |
| 7367790 | Double-acting type orbiting vane compressor The double-acting type orbiting vane compressor comprises an orbiting vane having upper and lower circular vanes formed at the upper and lower surfaces of a vane plate of the orbiting vane, respectively, the orbiting vane being attached to a crankshaft rotatable by ... | 05/06/2008 |
| 7354250 | Variable capacity rotary compressor A variable capacity rotary compressor having a slot defined between eccentric bushes, a latch pin fitted to a rotary shaft so as to be latched to the slot, and a restraint unit for restraining the eccentric bushes upon rotation of the rotary shaft. The restraint uni... | 04/08/2008 |
| 7341434 | Regulatory device comprising a threshold valve control valve The invention relates to a regulatory device for a pump (2), whose delivery volume can be adjusted, said device comprising a control valve unit (3) for regulating a control pressure that operates in a control pressure chamber (21) of an actuator... | 03/11/2008 |
| 7309217 | Variable capacity rotary compressor A variable capacity rotary compressor includes a hermetic casing, a housing installed in the hermetic casing to define therein first and second compression chambers having different capacities, and a compressing unit placed in the first and second compression chambe... | 12/18/2007 |
| 7300259 | Variable capacity rotary compressor A variable capacity rotary compressor, including upper and lower compression chambers having different capacities, a rotating shaft passing through the upper and lower compression chambers, upper and lower eccentric cams provided on the rotating shaft, and upper and... | 11/27/2007 |
| 7293966 | Variable capacity rotary compressor A variable capacity rotary compressor including a housing, the housing including two compression chambers, the two compression chambers having different capacities; a rotating shaft rotatably provided in the two compression chambers; two eccentric units respectively... | 11/13/2007 |
| 7281914 | Variable capacity rotary compressor A variable capacity rotary compressor has a simplified structure to reduce manufacturing costs and assembling time thereof and is capable of easily and conveniently performing a capacity-changing operation. The variable capacity rotary compressor includes first and ... | 10/16/2007 |
| 7263877 | Determination of the piston stroke in a reciprocating piston machine A method for determining the piston stroke of a reciprocating piston machine having a variable stroke, for example a swashplate compressor, a pivoting plate compressor or a pivoting ring compressor, especially for air-conditioning installations in motor vehicles. | 09/04/2007 |
| 7226275 | Variable capacity rotary compressor A variable capacity rotary compressor including upper and lower compression chambers having different capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direction. Upp... | 06/05/2007 |
| 7223081 | Variable capacity rotary compressor A variable capacity rotary compressor to prevent eccentric bushes from rotating faster than a rotating shaft, and includes upper and lower compression chambers having different interior capacities thereof, and the rotating shaft with upper and lower eccentric cams b... | 05/29/2007 |
| 7220108 | Variable capacity rotary compressor A variable capacity rotary compressor including upper and lower compression chambers having different capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direction. Upp... | 05/22/2007 |
| 7192259 | Variable capacity rotary compressor A variable capacity rotary compressor with upper and lower compression chambers having different capacities, the upper and lower compression chambers being partitioned from each other, and a rotary shaft extending through the upper and lower compression chambers. Th... | 03/20/2007 |
| 7175401 | Variable capacity rotary compressor A rotary compressor including upper and lower compression chambers having different interior capacities thereof, a rotating shaft having a locking hole, upper and lower eccentric cams provided on the rotating shaft to be eccentric from the rotating shaft, upper and ... | 02/13/2007 |
| 7153109 | Variable capacity rotary compressor A variable capacity rotary compressor includes a hermetic casing, a housing installed in the hermetic casing to define therein first and second compression chambers having different capacities, and a compressing unit placed in the first and second compression chambe... | 12/26/2006 |
| 7150602 | Variable capacity rotary compressor A variable capacity rotary compressor including first and second compression chambers having different capacities, and a rotating shaft. First and second eccentric cams are mounted to the rotating shaft to be eccentric in a same direction. First and second eccentric... | 12/19/2006 |
| 7150608 | Variable capacity rotary compressor A variable capacity rotary compressor including upper and lower compression chambers in which compressing operations are carried out. A slot is provided at a predetermined position between upper and lower eccentric bushes. A locking pin makes either of the upper and... | 12/19/2006 |
| 7144224 | Variable capacity rotary compressor A variable capacity rotary compressor is designed to prevent eccentric bushes from slipping during a compression operation, and thereby prevent noise from being generated and increase durability. The variable capacity rotary compressor includes a housing to define f... | 12/05/2006 |
| 7146263 | Predictive load management system A predictive load management system is provided. A power source is operable to generate a power output and has a desired operating range. A transmission has a drive member operably engaged with the power source and a driven member. A control system is operable to re... | 12/05/2006 |
| 7140844 | Variable capacity rotary compressor A variable capacity rotary compressor including upper and lower compression chambers having different interior capacities, and a rotating shaft. Upper and lower eccentric cams are provided on the rotating shaft to be eccentric from the rotating shaft in a same direc... | 11/28/2006 |
| 7134845 | Variable capacity rotary compressor A variable capacity rotary compressor including a housing to define therein two compression chambers having different capacities, a rotating shaft transmit ting a rotating force from a drive unit to the two compression chambers, two eccentric parts are provided on a... | 11/14/2006 |
| 7104764 | Variable capacity rotary compressor A variable capacity rotary compressor is designed to prevent eccentric bushes from slipping during a compression operation, thus preventing noise from being generated and increasing durability. The compressor includes a housing to define two compression chambers hav... | 09/12/2006 |
| 7070395 | Variable capacity rotary compressor A variable capacity rotary compressor to prevent an eccentric bush and a locking pin from being deformed or worn out due to a variance in a pressure of a compression chamber as a rotating shaft rotates. The compressor includes upper and lower compression chambers ha... | 07/04/2006 |
| 7059842 | Variable capacity rotary compressor A variable capacity rotary compressor including a hermetic casing, and a housing installed in the hermetic casing to define therein first and second compression chambers having different capacities. A compressor is placed in the first and second compression chambers... | 06/13/2006 |
| 7048515 | Hydraulic drive system and method using a fuel injection control unit A fuel injection control unit, including an electronic governor and a controller for an engine performs control in a governor region based on an isochronous characteristic. A working machine controller receives a delivery pressure signal P and controls a regulator s... | 05/23/2006 |
| 7044095 | Roller tappet with cold advance A cold advance device for advancing the injection beginning in cold condition diesel engine with single plunger pumps, by means of which the injection onset is adjusted in cold conditions and also in normal conditions. A piston is provided in the roller tappet and t... | 05/16/2006 |
| 7033149 | Medium pump adapted for ease of disassembly and assembly A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about the pump axle by running off an oblique control surface and realizes axi... | 04/25/2006 |
| 7014427 | Capacity controller of capacity variable compressor A small sized and structurally simple capacity controller having a wide control range of a compressor with variable capacity adds a differential pressure to an inhalation pressure on an arbitrary level by a piston valve body actuated by a solenoid and by the inhalat... | 03/21/2006 |
| 6962486 | Variable capacity rotary compressor A variable capacity rotary compressor is designed to make a pressure of a high-pressure side be uniformly applied to upper and lower ends of a roller of a low-pressure side, allowing the roller of the low-pressure side to be smoothly rotated. The compressor includes... | 11/08/2005 |
| 6935853 | Variable capacity rotary compressor A variable capacity rotary compressor, which is designed to make an internal pressure of a compression chamber, where an idle rotation is executed, be equal to an outlet side pressure of the rotary compressor, thus minimizing a rotating resistance. The compressor in... | 08/30/2005 |
| 6925799 | Speed control apparatus for hydraulic actuator The speed control apparatus for a hydraulic actuator includes a hydraulic source, an actuator connected with the hydraulic source and driven based on a supply of an operation oil, a direction switching valve which is switchably installed in a flow path between the h... | 08/09/2005 |
| 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 |
| 6863505 | Wind driven high pressure water pump This invention relates to a wind mill which is designed to convert rotational energy to mechanical energy to drive one or more pistons to raise a liquid such as water to an elevated location if necessary at a positive pressure. In addition, the present invention may... | 03/08/2005 |
| 6860724 | Rotary compressor A rotary compressor having a plurality of compression chambers and adapted to vary a compression capacity according to a direction of rotation of roller pistons within the compression chambers. A rotating shaft provided with a plurality of eccentric parts drives the... | 03/01/2005 |
| 6796773 | Variable capacity rotary compressor A variable capacity rotary compressor, which precisely controls variation of a compression capability into a desired discharge pressure, and which minimizes a resistance to rotation of a rotating shaft, and thus improves the capacity of the rotary compressor. The ro... | 09/28/2004 |
| 6732716 | Metering valve arrangement A metering valve arrangement comprises a metering valve member which is angularly adjustable within a metering valve bore provided in a metering valve housing and an adjustment arrangement for adjusting the axial position of the metering valve member within the mete... | 05/11/2004 |
| 6715995 | Hybrid compressor control method A method for controlling a hybrid compressor system is disclosed. The hybrid compressor system includes a variable displacement hybrid compressor that is selectively driven by one of an engine and an electric motor to cool a passenger compartment of a vehicle. The m... | 04/06/2004 |
| 6715997 | Housing for a rotary hydraulic unit with a servo piston A variable displacement hydraulic power unit has a housing and a rotating piston block with a rotatable axis and a servo piston bore having a reciprocal piston therein with the bore extending in a direction parallel to the rotatable axis of the rotating piston block... | 04/06/2004 |
