F03C 4 - Oscillating-piston engines

Patents for F03C 4 - Oscillating-piston engines (772)
12/2011
12/27/2011	US8083508 Progressive cavity compressor having check valves on the discharge endplate
12/13/2011	US8075292 Eccentric rotor compressor
12/13/2011	US8075291 Scroll compressor improved in function of oil circulation and back pressure control
12/13/2011	US8075290 Scroll compressor with valve for controlling fluid to flow from an outer wall to an inner wall of a fixed or a movable spiral wrap
12/13/2011	US8075289 Scroll-type fluid machine including thrust receiving device
12/13/2011	US8075288 Screw pump and pumping arrangement
11/2011
11/22/2011	US8062011 Compressor having an ejector oil pump
11/16/2011	CN101331301B Internal combustion engine
11/15/2011	US8057202 Tip seal for a scroll compressor
11/02/2011	CN102230447A Hydraulic motor
11/01/2011	US8047824 Vane machine with stationary and rotating cylinder parts
11/01/2011	US8047823 Scroll-type fluid machine including pressure-receiving piece
11/01/2011	CA2503914C Shared slot vane pump
10/2011
10/25/2011	US8043078 Compressor sealing arrangement
10/18/2011	US8038423 Electric pump with relief valve
10/18/2011	US8038422 Gear pump with a valve arranged between a suction side and a pressure side of the gear pump
10/18/2011	US8038421 Scroll compressor having an allowable angle of rotation
10/12/2011	CN102215014A Multifunctional permanent magnet energy power machine
10/04/2011	US8029254 Scroll-type fluid machine having a back-pressure chamber
09/2011
09/21/2011	CN201982240U 摆缸式液压马达 Swing cylinder type hydraulic motor
09/20/2011	US8021134 Compressor slide valve support
09/13/2011	US8016577 Vane pump with vane biasing means
09/07/2011	CN102174925A Large-diameter hollow hydraulic oscillatory motor
09/06/2011	US8011910 Low noise gear set for gear pump
09/06/2011	US8011909 Balanced variable displacement vane pump with floating face seals and biased vane seals
08/2011
08/30/2011	US8007263 Water-lubricated compressor
08/30/2011	US8007262 Compressor with thrust bearing having insular pressure- receiving portions on sliding surface and diamond-like carbon layer on another sliding surface
08/30/2011	US8007261 Thermally compensated scroll machine
08/30/2011	US8007260 Scroll fluid machine having a coupling mechanism to allow relative orbiting movement of scrolls
08/30/2011	US8007259 Stator system
08/30/2011	US8007248 Engine speed dependent oil pump pressure regulation
08/23/2011	US8002529 Scroll compressor with extended profile
08/17/2011	CN101778999B Screw compressor with integral bearing cover and discharge plenum divider
08/16/2011	US7997885 Roots-type blower reduced acoustic signature method and apparatus
08/16/2011	US7997883 Scroll compressor with scroll deflection compensation
08/16/2011	US7997882 Reduced rotor assembly diameter vane pump
08/09/2011	US7993120 Slide valve
08/09/2011	US7993119 Vane pump and vapor leakage check system having the same
08/09/2011	US7993117 Scroll compressor and baffle for same
08/09/2011	US7993116 Variable displacement vane pump
08/02/2011	US7988436 Vane machine
08/02/2011	US7988431 Capacity-variable rotary compressor
07/2011
07/12/2011	US7976297 Gear pump including introduction paths and return paths
07/12/2011	US7976294 Scroll fluid machine having stationary and orbiting scrolls having a coupling mechanism to allow the orbiting scroll to orbit relative to the second scroll
06/2011
06/28/2011	US7967584 Scroll machine using floating seal with backer
06/28/2011	US7967580 Oil pump for an internal combustion engine
06/21/2011	US7963754 Hydraulic machine
06/21/2011	US7963753 Scroll compressor bodies with scroll tip seals and extended thrust region
06/15/2011	CN102094747A Oscillating cylinder type hydraulic motor
06/14/2011	US7959422 Oil pump and method of assembling the oil pump
06/14/2011	US7959421 Compressor having a shutdown valve
06/07/2011	US7955063 Vane pump
05/2011
05/31/2011	US7950912 Scroll compressor having a gradually changing tip clearance
05/24/2011	US7946833 Variable displacement vane pump
05/10/2011	US7938634 Self-modulated scroll compressor with optimized built-in volume ratio
04/2011
04/26/2011	US7931454 Pump device
04/21/2011	WO2011046591A1 Internal combustion engine and supercharger
04/21/2011	CA2776812A1 Internal combustion engine and supercharger
04/12/2011	US7922469 Pump
04/12/2011	US7922468 Gear pump with improved inlet port
04/05/2011	US7918658 Non symmetrical key coupling contact and scroll compressor having same
03/2011
03/22/2011	US7909590 Reciprocating component-free kinematic motion apparatus for transforming pressure variations of a fluid operating in cyclically variable volume toroidal chambers into a mechanical work on a rotary axis and engine including said apparatus
03/15/2011	US7905717 PD pumps with a common gearbox module and varying capacities and easy access to mechanical seals
03/15/2011	US7905716 Scroll compressor
03/15/2011	US7905715 Scroll compressor having a fixed scroll part and an orbiting scroll part
03/08/2011	US7901194 Shaft coupling for scroll compressor
02/2011
02/15/2011	US7887310 Compressor unloading valve
02/01/2011	US7878779 Vane pump with housing end wall having an annular groove and a pressure groove that communicate via a curved connecting groove
02/01/2011	US7878777 Scroll compressor having grooved thrust bearing
02/01/2011	US7878776 Thermally compensated scroll machine
02/01/2011	US7878775 Scroll compressor with housing shell location
02/01/2011	US7878774 Moineau stator including a skeletal reinforcement
01/2011
01/25/2011	US7874820 Compressor unloading valve
01/12/2011	CN201705750U Cycloid hydraulic brake motor
01/12/2011	CN101943638A Reliability test method and device of gripping tool rotating body of forestry crane
01/11/2011	US7866963 Variable delivery vane oil pump, in particular for oil
01/04/2011	US7862314 Screw compressor
12/2010
12/07/2010	US7845921 Supercharger with outlet bars for rotor tip seal support
11/2010
11/30/2010	US7841846 Vane pump with improved internal port placement
11/24/2010	CN201650580U Vane type pressure swinging motor
11/23/2010	US7837452 Scroll compressor including deflection compensation for non-orbiting scroll
11/16/2010	US7832996 Hydrostatic rotary cylinder engine
11/09/2010	US7828535 Pressure sealed tapered screw pump/motor
11/09/2010	US7828534 Displacement machine including at least two adjacent working chambers
10/2010
10/26/2010	US7819646 Rotary piston vacuum pump with washing installation
10/14/2010	DE102009016595A1 Hydromotor for use in automobiles for pivoting component relative to base part, has housing, in which shaft is supported, where shaft is pivotably supported in housing by two bearings
10/12/2010	US7811071 Scroll compressor for carbon dioxide refrigerant
09/2010
09/28/2010	US7802973 Compact vane pump with mixed suction and return flows
09/21/2010	US7798793 Compressor slide valve lubrication
09/21/2010	CA2514823C Gear pump
09/14/2010	US7794218 Roots type pump and fuel cell system
09/07/2010	US7789642 Gear pump and method of producing the same
08/2010
08/24/2010	US7780427 Two-stage rotary compressor
08/24/2010	US7780426 Rotary compressor defining gaps of different sizes
08/18/2010	CN101198766B Balancing plate-shuttle ball
08/17/2010	US7775782 Variable capacity rotary compressor having vane controller
08/03/2010	US7766636 Oscillating variable displacement ring pump
08/03/2010	US7766633 Scroll compressor having a slider with a flat surface slidable and fitted in a notch part of a main shaft
07/2010
07/27/2010	US7762799 Oil-cooled screw compressor
07/27/2010	US7762798 Compressor having different hardness surface between upper surface and receiving surface of top dead center of compression member and vane

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