Patents
Sitemap › F03 - Machines or engines for liquids; Wind, spring, or weight motors; Producing mechanical power or a reactive propulsive thrust, not otherwise provided for › F03C - Positive-displacement engines driven by liquids › F03C 2 - Rotary-piston engines
Patents for F03C 2 - Rotary-piston engines (2,448)
12/2012
12/25/2012US8337182 Skinning of progressive cavity apparatus
12/19/2012CN202611989U Cycloidal hydraulic motor
12/19/2012CN202611988U Hydraulic motor of internal relief check valve
12/19/2012CN202611771U Double screw rod expander rotor mold line
12/19/2012CN102828896A Variable volume type speed regulation water pump hydraulic turbine
12/19/2012CN102828895A Radial supporting shaft-valve flow-distributing hydraulic orbit motor
12/18/2012US8333576 Power steering pump having intake channels with enhanced flow characteristics and/or a pressure balancing fluid communication channel
12/12/2012CN202597086U Mechanical rotor fluid capacity variable mechanism
12/12/2012CN102817833A Bidirectional gear oil pump or motor provided with full-hydraulic floating packingless bidirectional shaft sleeves
12/11/2012US8328545 Scroll fluid machine with stabilized orbiting scroll
12/11/2012US8328542 Positive displacement rotary components having main and gate rotors with axial flow inlets and outlets
12/05/2012CN102808721A Cycloid hydraulic motor structure
12/05/2012CN102808654A Rotating valve mechanism and planetary rotating device using same
12/04/2012US8323010 Expander-compressor unit
12/04/2012US8323009 Rotary-type fluid machine
11/2012
11/28/2012CN202560554U Fluid pressure and mechanical energy converter
11/28/2012CN102797622A Cycloid hydraulic motor of shaft-valve flow-distribution type
11/28/2012CN101321928B Water explosion engine, method, and device
11/21/2012CN202545106U Hydraulic motor
11/21/2012CN102788012A Fluid pump with screw spiral mechanism, fluid power machine and internal and external combustion jet engine
11/21/2012CN102787968A Mechanical structure force acting machine with atomic structure strength as energy source
11/21/2012CN102787967A Hydraulic power unit
11/15/2012WO2012151699A1 Spherical involute gear coupling
11/14/2012CN102777382A Scroll type fluid machine
11/14/2012CN102777377A Slide plate type hydraulic pump or motor
11/14/2012CN102168644B Hydraulic drive device
11/13/2012US8308460 Scroll compressor
11/13/2012US8308459 Moineau pump
11/13/2012US8308458 Rotor assembly for multi-stage pump
11/06/2012US8303282 Gear pump for a power steering system
11/06/2012US8303279 Injection tubes for injection of fluid into a scroll compressor
11/06/2012US8303278 Scroll compressor utilizing liquid or vapor injection
11/06/2012US8303277 Blending pump assembly
10/2012
10/31/2012CN202510277U Cosine gear motor
10/30/2012US8297958 Optimized discharge port for scroll compressor with tip seals
10/26/2012WO2012142714A1 Rotors formed using involute curves
10/26/2012CA2833593A1 Rotors formed using involute curves
10/24/2012CN102748278A Vane pump/motor
10/23/2012US8292605 Rotary fluid device with multi-level phase shift control
10/17/2012EP2511530A2 Gear pump
10/16/2012US8287259 Oil-cooled type screw compressor
10/16/2012US8287258 Positive displacement pump with impeller and method of manufacturing
10/16/2012US8287257 Oldham coupling
10/10/2012CN102720630A Multispeed roller motor with double rotors in casing and rotating cam-link
10/10/2012CN101871420B Two freedom degree spherical hydraulic motor with fixed rudder blade shaft
10/09/2012US8282371 Screw pump
10/09/2012US8281676 Transmission utilizing hypocycloid motion
10/03/2012CN202468153U Double-speed hydraulic motor
10/03/2012CN202468152U Cycloid hydraulic motor rotor and stator pair with sealing structure
10/03/2012CN101400889B Slide valve with hot gas bypass port
10/02/2012US8277208 Split discharge vane pump and fluid metering system therefor
10/02/2012US8277207 Oil supply method of two-stage screw compressor, two-stage screw compressor applying the method, and method of operating refrigerating machine having the compressor
09/2012
09/26/2012CN102691655A Shaft rotation double-stator cam rotor multi-output pump
09/19/2012CN102678182A Star-spinning type rotation device with double sun wheels, engine and fluid machine
09/19/2012CN102678181A Rotor molded line for double-screw expansion machine
09/18/2012US8267678 Vane type vacuum pump
09/12/2012CN202431432U Hydraulic motor housing with temperature control system
09/12/2012CN102667061A Internal combustion engine and supercharger
09/05/2012CN202417808U Hydraulic motor of cycloid
09/05/2012CN202417807U Indexing hydraulic motor
09/04/2012US8257071 Vane pump
09/04/2012US8257070 Seal apparatus of gear pump
09/04/2012US8257069 Low speed, high torque rotary abutment motor
09/04/2012US8257068 Cooling system for gerotor motor
08/2012
08/29/2012CN202402208U Inner-gearing multi-acting gear motor
08/28/2012US8251684 Trochoid pump providing axial regulation of a driving shaft
08/28/2012US8251683 Variable capacity rotary compressor
08/28/2012US8251682 Multi stage rotary expander and refrigeration cycle apparatus with the same
08/15/2012CN202381250U Rear shaft output plane valving cycloidal hydraulic motor
08/15/2012CN202381249U Multi-drainage runner and oil port cycloid hydraulic motor
08/15/2012CN202381125U Rotary engine
08/15/2012CN102635409A Rotating machine
08/14/2012US8241022 Rotation-preventing member and scroll compressor
08/14/2012US8241021 Displacement type compressor having a self-start synchronous motor and start load reducing means
08/08/2012CN202370742U Back-shaft output shaft flow distribution cycloidal hydraulic motor
08/08/2012CN101915204B Built-in integrated valve type braking cycloid hydraulic motor
08/07/2012US8235691 Dual displacement external gear pump
08/01/2012CN202360148U Star-rotating type rotating device using gate valve structure
07/2012
07/31/2012US8231368 Multi-stage rotary compressor
07/25/2012CN202348552U Hydraulic power machine
07/25/2012CN202345331U Integral type hydraulic motor for hydraulic air conditioner
07/24/2012US8226388 Oil-cooled screw compressor
07/24/2012US8226387 Scroll compressor including lubrication features
07/18/2012CN102588203A Cycloidal hydraulic motor with multiple escape flow paths and multiple oil ports
07/17/2012US8221103 Fluid motor having improved braking effect
07/17/2012US8221102 Hydraulic machine
07/17/2012US8220435 Rotary piston engine and method for designing the same
07/11/2012CN202326005U 一种外啮合多作用齿轮马达 More than one kind of external meshing gear motor action
07/11/2012CN202326004U 壳转式内曲线径向柱塞液压马达 Shell-turn within curve radial piston hydraulic motor
07/11/2012CN102562475A Wind generating set and hydraulic motor thereof
07/11/2012CN102562431A Shell oil distribution type hydraulic motor with spherical vanes
07/11/2012CN102562430A Shell oil distribution type hydraulic motor with cylindrical vanes
07/10/2012US8215936 Screw compressor
07/10/2012US8215933 Scroll compressor and refrigerating machine having the same
07/10/2012US8215932 Long life telescoping gear pumps and motors
07/04/2012EP1763620B1 Compressor unloading valve
07/04/2012CN102536628A Hydraulic motor
07/04/2012CN102536627A Shell for low-pressure large-discharge capacity blade hydraulic motor
07/04/2012CN102536626A Graduating hydraulic motor
07/04/2012CN102536625A Cylindrical vane hydraulic motor
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