| Patents for F03C 2 - Rotary-piston engines (2,448) |
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| 03/03/2009 | US7497672 Screw pump with increased volume of fluid to be transferred |
| 02/17/2009 | US7491045 Scroll compressor having a position adjustment device urging the stationary scroll towards the movable scroll by moving a seal formed between a support and the stationary scroll |
| 02/17/2009 | US7491044 Sealing device of fluid machinery |
| 02/17/2009 | US7491043 Variable displacement pump having a rotating cam ring |
| 02/17/2009 | US7491041 Multistage roots-type vacuum pump |
| 02/12/2009 | WO2008129349A3 Rotary fluid pressure device with modular multi-speed control mechanism |
| 02/10/2009 | US7488162 Hydraulic pump for a power steering system |
| 02/04/2009 | CN201190629Y Shaft sleeve valve assignment cycloid hydraulic motor |
| 02/04/2009 | CN101360886A Rotary motor with intermittent movements of the rotors |
| 02/03/2009 | US7485282 Method for the preparation of metal oxides in nanometric particle form |
| 02/03/2009 | US7484945 Compressor for refrigerator-freezer having a porous member |
| 01/28/2009 | EP2018369A2 Gerotor motor and brake assembly |
| 01/27/2009 | US7481634 Volumetric screw compressor provided with delivery adjustment device |
| 01/21/2009 | CN100453801C Distribution supporting plate for high-speed distribution cycloid hydraulic motor and method for fabricating same |
| 01/20/2009 | US7479000 Gear pump |
| 01/14/2009 | CN101344067A Oil distribution disk and continuous slewing electro-hydraulic servo motor using the same |
| 01/14/2009 | CN100451296C Switch valve structure of fluid machine |
| 01/13/2009 | US7476093 Oil pump rotor assembly |
| 01/13/2009 | US7476092 Scroll compressor with tapered slider block |
| 01/07/2009 | CN101338747A Double oil path vane pump /motor |
| 01/07/2009 | CN101338725A Engine capable of recycling energy capacity |
| 01/06/2009 | US7473084 Oil-cooled screw compressor |
| 01/06/2009 | US7473083 Oil separating device for compressor |
| 01/06/2009 | US7473082 Pumping system with progressive cavity pump |
| 01/06/2009 | US7473081 Hermetically sealed compressor and method of manufacturing the same |
| 01/02/2009 | DE102006061854B4 Fluidmotor mit verbesserter Bremswirkung Fluid motor with improved braking performance |
| 12/24/2008 | DE102007028675A1 Hydrostatic machine, particularly external gear pump or external gear motor, has two external gear wheels, which stays together in combing contact |
| 12/24/2008 | CN101328858A Low friction high-pressure blade rotating motor based on self-compensation compound seal technique |
| 12/18/2008 | WO2008153891A1 Moineu stator including a skeletal reinforcement |
| 12/16/2008 | US7465157 Compact eccentric screw pump |
| 12/10/2008 | CN101321928A Water explosion engine, method, and device |
| 12/09/2008 | US7462021 Rotary compressor, and car air conditioner and heat pump type water heater using the compressor |
| 12/02/2008 | US7458792 Sintered metal rotor of a rotary piston pump |
| 12/02/2008 | US7458790 Vacuum pump with improved oil lubrication |
| 12/02/2008 | US7458788 Scroll fluid machine including back-pressure chamber with increased pressure receiving area |
| 12/02/2008 | US7458152 Method of manufacturing an orbiting scroll in a scroll fluid machine |
| 11/26/2008 | EP1994278A1 Slide valve with hot gas bypass port |
| 11/25/2008 | US7455508 Scroll type fluid machine having counter weight provided on driving bush and sub weight radially protruding from rotary shaft |
| 11/25/2008 | US7455507 Structure for preventing cavitation erosion of oil pump |
| 11/20/2008 | WO2007146999A3 Rotor with cut-outs |
| 11/20/2008 | US20080287562 Stable cationically crosslinkable/polymerizable dental composition with a high filler content |
| 11/18/2008 | US7452194 Screw pump |
| 11/04/2008 | US7445438 Torque limited lube pump for power transfer devices |
| 11/04/2008 | US7445437 Scroll type fluid machine having a first scroll wrap unit with a scroll member and a scroll receiving member, and a second scroll wrap unit engaged with the first scroll wrap unit |
| 10/30/2008 | CA2663921A1 Rotary fluid pressure device with modular multi-speed control mechanism |
| 10/28/2008 | US7442018 Compressor having an oil residue pool |
| 10/28/2008 | US7442017 Displacement type compressor having a self-start synchronous motor and start load reducing means |
| 10/22/2008 | CN201137549Y Valve spindle cycloid hydraulic motor |
| 10/22/2008 | CN201137548Y Minisize axial-flow cycloid hydraulic motor |
| 10/22/2008 | CN101292087A Net-displacement control of fluid motors and pumps |
| 10/21/2008 | US7438543 Oscillating slide machine |
| 10/21/2008 | US7438541 Hermetic rotary compressor |
| 10/21/2008 | US7438540 Two-stage rotary compressor |
| 10/16/2008 | DE102007017652A1 Rotationskolbenmaschine Rotary piston engine |
| 10/14/2008 | US7435067 Scroll machine with brushless permanent magnet motor |
| 10/14/2008 | US7435065 Rotary fluid machine having a swinging bushing with a swing center disposed radially inwardly of an annular midline of an annular piston |
| 10/14/2008 | US7435064 Oscillating piston machine |
| 10/09/2008 | US20080247882 Split-Pressure Dual Pump Hydraulic Fluid Supply System for a Multi-Speed Transmission and Method |
| 10/08/2008 | CN201129268Y Variable oil motor |
| 10/07/2008 | US7431007 Apparatus adapted to perform as compressor, motor, pump and internal combustion engine |
| 10/07/2008 | CA2311895C Progressive cavity motors using composite materials |
| 10/02/2008 | US20080240959 Brake releasing mechanism and brake system |
| 10/02/2008 | US20080240956 Scroll fluid machine |
| 10/02/2008 | DE102007015626A1 Hydraulische Maschine Hydraulic machine |
| 10/02/2008 | DE102007015170A1 Fluid energy machine, e.g. turbines, pumps, compressors and engines, has circular housing with fluid inlet and fluid outlet and circular rotating body, which is coaxially arranged and pivoted in interior of housing |
| 09/24/2008 | CN201121555Y Dual-spindle output shaft valve flow distribution cycloid hydraulic motor |
| 09/16/2008 | US7425121 Rotary vane pump |
| 09/04/2008 | WO2008031012A3 Long life telescoping gear pumps and motors |
| 09/03/2008 | CN101258323A Slide valve |
| 09/02/2008 | US7419371 Scroll fluid machine |
| 09/02/2008 | US7419370 Scroll compressor having a position adjustment device urging the movable scroll towards the stationary scroll by moving a seal formed between a support and the movable scroll |
| 09/02/2008 | US7419369 Displacement type expansion machine and fluid machine |
| 08/27/2008 | CN201106522Y Axial transmission collocation axis valve flow-matching cycloid hydraulic motor |
| 08/26/2008 | US7416395 Sleeve for coupling a refrigerant pipe to a compressor container |
| 08/20/2008 | EP1957753A1 Rotary motor with intermittent movements of the rotors |
| 08/20/2008 | CN100412320C Gerotor mechanism for a screw hydraulic machine |
| 08/19/2008 | US7412831 Integral cooling system for rotary engine |
| 08/12/2008 | US7410349 High efficiency gerotor pump |
| 08/12/2008 | CA2425487C Hinged rotor internal combustion engine |
| 08/05/2008 | US7407372 Progressing cavity pump or motor |
| 07/31/2008 | WO2008089714A1 Adjustable coolant pump |
| 07/31/2008 | WO2007019018A3 Controlled-clearance sealing compressor devices |
| 07/30/2008 | EP1033474B1 Positive-displacement piston mechanism of rotary piston structure |
| 07/29/2008 | US7404706 Scroll fluid machine having oil-supply holes being formed through a reinforcement bearing plate on a rear surface of the orbiting scroll |
| 07/29/2008 | US7404705 Blending pump assembly |
| 07/23/2008 | CN201090378Y Hydraulic pressure energy collecting wind power generation system |
| 07/23/2008 | CN201090367Y Assembled rotor and stator cycloid hydraulic motor |
| 07/23/2008 | CN101225791A Distributing plate of plane flow-distributing liquid-pressure motor and manufacturing method therefor |
| 07/16/2008 | CN101223363A Gear pump |
| 07/16/2008 | CN100402856C Scroll type hydraulic machine |
| 07/15/2008 | US7399170 Hermetic rotary compressor and refrigerating cycle device using the same |
| 07/09/2008 | CN100400886C Apparatus for preventing overheating of scroll compressor |
| 07/03/2008 | WO2008079131A1 Screw compressor with integral bearing cover and discharge plenum divider |
| 07/03/2008 | DE102007001021A1 Rotary piston machine for use as e.g. steering drive, has piston coupled by lever, which is guided in radial direction from piston to shaft through gap, which is sealed and inserted in wall of cylinder in movement direction of piston |
| 07/02/2008 | CN201079875Y Hydraulic tapping machine |
| 07/01/2008 | US7393695 Using cyclonic fluid flow to increase number of molecular collisions that occurring in fluid and heat of fluid |
| 07/01/2008 | US7393192 Rotary vane pump |
| 07/01/2008 | US7393191 Internal refrigerant gas circulation apparatus for a closed-type scroll compressor |
| 07/01/2008 | US7393190 Discharge valve system of scroll compressor |
| 06/26/2008 | DE102006061854A1 Fluidmotor mit verbesserter Bremswirkung Fluid motor with improved braking performance |