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)
08/2010
08/12/2010DE10356183B4 Hydrostatischer Motor mit radialer Verteilung Hydrostatic engine with radial distribution
08/11/2010CN101798986A Vehicle-mounted hydraulic self-generating system
08/03/2010US7766635 Rotary pump having sinusoidal sealing lines
08/03/2010US7766633 Scroll compressor having a slider with a flat surface slidable and fitted in a notch part of a main shaft
07/2010
07/27/2010US7762799 Oil-cooled screw compressor
07/15/2010US20100178186 Fluid motor having improved braking effect
07/15/2010DE202009002236U1 Flügelrad-Fluidmotor Impeller fluid motor
07/14/2010CN201526411U Large-torque hydraulic gear motor
07/14/2010CN101778999A Screw compressor with integral bearing cover and discharge plenum divider
07/14/2010CN101776039A High bow force couple fluid motor
07/13/2010US7753665 Screw compressor for working pressures above 80 bar
07/13/2010US7753663 Mounting structure of discharge valve in rotary compressor
07/06/2010US7748968 Two-cylinder rotary compressor with suction pipes
07/06/2010CA2397164C Progressive cavity helical device
07/01/2010DE102008063500A1 Hydraulische Maschine Hydraulic machine
06/2010
06/30/2010CN101761446A Stepless speed regulation hydraulic motor
06/29/2010US7744356 Screw vacuum pump with male and female screw rotors having unequal leads
06/24/2010WO2010070913A1 Scroll type fluid machine
06/23/2010CN1961135B Surgical pneumatic motor
06/23/2010CN101137840B 压缩机噪音抑制 Compressor noise suppression
06/22/2010US7740482 Cationically reactive compound, dental filler treated with an organosilicon coupling agent, cationic photoinitiator, and a compounds containing an oxirane, oxetane, alkenyl ether and/or carbonate function; improved storage stability; no residual coloration
06/16/2010CN101737274A Gravity and inertial force driving system
06/16/2010CN101737243A Hydraulic motor for star cycloid
06/15/2010US7736136 Compressor including separation tube engagement mechanism
06/15/2010US7736135 Structure for controlling lubricant's flow rate in scroll compressor
06/08/2010US7731486 Compressor with dual pathways for returning lubricating oil
06/03/2010WO2010061168A2 Valve-controlled downhole motor
06/03/2010CA2744549A1 Valve-controlled downhole motor
06/02/2010CN101338747B Double oil path vane pump /motor
06/01/2010US7726960 Twin-plate rotary compressor
06/01/2010US7726958 Hydraulic machine
05/2010
05/26/2010CN201486743U Noncircular planetary wheel hydraulic motor
05/26/2010CN101713399A Hydrostatic separable speed changer
05/25/2010US7722344 Impeller-drive shaft construction for a fuel pump
05/25/2010US7722341 Scroll compressor having variable height scroll
05/19/2010CN101709686A Water pressure power machine
05/18/2010US7717689 Rotor apparatus of pump including a drive shaft with a plurality of arcuate circumferential surface sections
05/18/2010US7717687 Scroll compressor with compliant retainer
05/18/2010US7717686 Two stage compressor having rotary and scroll type compression mechanisms
05/12/2010CN101115908B Compressor uninstalling valve
05/11/2010US7713040 Rotor shaft sealing method and structure of oil-free rotary compressor
05/11/2010US7713039 Helical screw compressor having a vented sealing arrangement
05/11/2010US7713038 Scroll fluid machine
05/04/2010US7708538 Oil free screw compressor
05/04/2010US7708536 Scroll-type refrigerant compressor having fluid flowing from gas inlet to motor winding end chamber through intermediate jacket
04/2010
04/27/2010US7704061 Oil pump
04/27/2010US7704060 Compressor having muffler outlets orthogonally arranged relative to the suction mouth
04/27/2010US7704059 Compressor having a helmholtz type resonance chamber with a lowermost end connected to a gas passage
04/22/2010DE102007028675B4 Hydrostatische Maschine Hydrostatic machine
04/21/2010CN101115907B Compressor device and method for rebuilding the compressor or its structure
04/20/2010US7699592 Rotary piston machine
04/20/2010US7699591 Scroll compressor with surface processed orbiting scroll plate back surface
04/20/2010US7699589 Scroll type fluid machine having a circulation path and inlet path for guiding refrigerant from a discharge chamber to a drive casing and to a rear-side of movable scroll
04/14/2010CN101694204A Bevel rotary piston water turbine
04/13/2010US7695262 Pump having toothing on the rotary and drive shaft
04/13/2010US7695260 Gerotor apparatus for a quasi-isothermal Brayton cycle engine
04/13/2010US7695259 Rotary fluid pressure device with modular multi-speed control mechanism
04/13/2010US7695257 Apparatus for preventing vacuum of scroll compressor
03/2010
03/31/2010CN201433794Y Multi-purpose energy converter
03/30/2010US7686602 Slippers for rollers in a roller vane pump
03/30/2010US7686601 High pressure telescoping gear pumps and motors
03/30/2010US7686600 Vaccum pump having shaft seal to prevent corrosion and to ensure smooth operation
03/30/2010US7686599 Scroll compressor with device to limit orbit radius
03/25/2010WO2005068839A8 Hydraulic motor having an oscillating supporting piston
03/18/2010DE19981556B4 Pumpe Pump
03/17/2010CN201424995Y Double stem-hydraulic orbital motor
03/09/2010US7674098 Scroll compressor with vapor injection and unloader port
03/09/2010US7674097 Rotary expander
03/03/2010CN201416508Y Controllable wheel trough sluggish flow type water wheel/water pump machine
03/02/2010US7670122 Gerotor pump
03/02/2010US7670121 Spherical fluid machines
02/2010
02/24/2010CN201412330Y vane pump/motor
02/18/2010WO2010017700A1 Vane pump/motor
02/18/2010DE102008038766A1 Hydraulische Zahnradmaschine Hydraulic gear machine
02/16/2010US7661939 Drive shaft for a compressor
02/09/2010US7658600 Scroll compressor with thrustplate peeling prevention
02/04/2010WO2009125308A3 Rotary hydraulic machine
02/04/2010US20100028186 Hydraulic machine
02/03/2010CN101639033A Cycloidal hydraulic motor with engaged rotation of external rotor and internal gear
02/02/2010US7654805 Scroll compressor with an anti-rotation mechanism
02/02/2010US7654804 Fluid displacement apparatus having pressure sensing device
01/2010
01/28/2010DE102008034391A1 Hydraulic drive for use in mining region, has pressure controlled axial clearance compensation mechanisms such as guide plate, pressure plate, housing cover, screw and ball, compensating clearance of drive shaft
01/20/2010CN100582477C Compressor with slide valve and method for applying coat on slide valve
01/14/2010US20100008808 Sliding face modification material, method for producing sliding face modification material, method for using sliding face modification material, sliding members having sliding face modification material, and compressor comprising sliding members
01/05/2010US7641455 Scroll compressor with reduced oldham ring noise
01/05/2010US7641454 Two-stage rotary compressor
12/2009
12/23/2009CN101608597A Controllable wheel-groove slow flow type water turbine/water pump
12/16/2009CN201363271Y Vane pump/motor
12/15/2009US7632084 Oilless rotary vane pump having open ends of vane grooves being inclined rearward in the rotation direction
12/15/2009US7632083 Anti-galling pump rotor for an internal gear pump
12/15/2009US7632082 Hermetically sealed compressor and method of manufacturing the same
12/08/2009US7628595 Gas vane pump, and method of operating the pump
12/08/2009US7628594 Vane pump having a labyrinth seal and gap between a top surface of a rotor and a ceiling surface of a rotor chamber that is formed between upper and lower cases
12/08/2009US7628593 Horizontal type scroll compressor including a first space and a second space
12/08/2009US7628592 Fluid machine having reduced heat input to fluid
12/02/2009CN100564808C Unload valve of compressor
12/01/2009US7625191 Rotary displacement machines having rotors of asymmetrical profile
11/2009
11/25/2009CN101586523A Noncircular planetary gear hydraulic motor
11/24/2009US7621730 Surgical pneumatic motor
11/18/2009CN101581301A Vane pump/motor
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