| Patents for F04C 2 - Rotary-piston machines or pumps (14,296) |
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| 04/11/2013 | DE112004000205B4 Hydraulikpumpe für ein Servolenksystem Hydraulic pump for a power steering system |
| 04/11/2013 | DE102011115010A1 Innenzahnradmaschine Internal gear pump |
| 04/11/2013 | DE102009019220B4 Schraubenspindelpumpe Screw Pump |
| 04/11/2013 | DE10083436B4 Pumpe für ein flüssiges oder gasförmiges Medium Pump for a liquid or gaseous medium |
| 04/11/2013 | CA2851317A1 Pre-compression dual spring pump control |
| 04/10/2013 | EP2578883A2 Cartridge style binary vane pump |
| 04/10/2013 | EP2578882A1 Uniaxial eccentric screw pump |
| 04/10/2013 | EP2577067A1 Variable displacement lubricant pump |
| 04/10/2013 | EP2577066A2 Internal gear pump |
| 04/10/2013 | CN202867210U Automatic reversing device of novel cycloidal gear lubricating oil pump |
| 04/10/2013 | CN202867209U Pumping equipment adopting vortex pump |
| 04/10/2013 | CN202867208U Elliptical rotating sliding vane pump |
| 04/10/2013 | CN202867207U Gear pump with flange, external thread, spoke and springs |
| 04/10/2013 | CN202867206U Dual-external-thread spoke spring gear pump |
| 04/10/2013 | CN202867205U Internal and external thread self balancing gear pump |
| 04/10/2013 | CN202867204U Flanged external-thread conical spring gear pump |
| 04/10/2013 | CN202867203U Internal-and-external-thread cylindrical spring gear pump |
| 04/10/2013 | CN202867202U Dual-external-thread self-balance gear pump |
| 04/10/2013 | CN202867201U Dual-flange cylindrical spring gear pump |
| 04/10/2013 | CN202867200U Dual-external-thread gasbag balance gear pump |
| 04/10/2013 | CN202867199U External-meshing gear pump |
| 04/10/2013 | CN202867198U Low-pressure oil-injection screw compressor |
| 04/10/2013 | CN202867197U Internal and external thread spoke spring gear pump |
| 04/10/2013 | CN202867196U Dual-external-thread gasbag balance gear pump |
| 04/10/2013 | CN202867195U Self-balance gear pump with flange and external thread |
| 04/10/2013 | CN202867194U Double-flange self balancing gear pump |
| 04/10/2013 | CN202867193U Dual-flange conical spring gear pump |
| 04/10/2013 | CN202867192U Self-balance gear pump with flange and internal thread |
| 04/10/2013 | CN202867191U Flanged internal-thread gasbag balance gear pump |
| 04/10/2013 | CN202867190U Flanged internal-thread spoke spring gear pump |
| 04/10/2013 | CN202867189U Dual-internal-thread spoke spring gear pump |
| 04/10/2013 | CN202867188U Flanged external-thread cylindrical spring gear pump |
| 04/10/2013 | CN202867187U Screw type deep-well pump |
| 04/10/2013 | CN103038526A Buffering member, shaft coupled structure, and a uniaxial eccentric screw pump |
| 04/10/2013 | CN103038511A Uniaxial eccentric screw pump |
| 04/10/2013 | CN103038452A Vane cell pump |
| 04/10/2013 | CN103032308A Cartridge style binary vane pump |
| 04/10/2013 | CN103032307A Improved automobile steering pump |
| 04/10/2013 | CN103032306A Gear pump and refrigerator having same |
| 04/10/2013 | CN102182682B Rotary vane compressor |
| 04/10/2013 | CN102182674B Five-wire synchronous meshing spring compensation combined pump |
| 04/10/2013 | CN101975159B Double-stator single-rotor screw motor consubstantial pump |
| 04/10/2013 | CN101737320B Method for designing internal-rotation constant-pressure pump |
| 04/10/2013 | CN101379295B 齿轮泵 Gear pumps |
| 04/04/2013 | WO2013049030A1 Universal joint with cooling system |
| 04/04/2013 | WO2013045152A2 Internal gear pump |
| 04/04/2013 | WO2013009796A3 Downhole motor with diamond-like carbon coating on stator and/or rotor |
| 04/04/2013 | WO2012093274A3 Semi-plugged star gerotor and method of assembling the same |
| 04/04/2013 | WO2012078216A3 Enhanced elastomeric stator insert via reinforcing agent distribution and orientation |
| 04/04/2013 | US20130081424 Scroll compressor and air conditioner including the same |
| 04/04/2013 | DE102011054028A1 Verdrängerpumpe Displacement pump |
| 04/04/2013 | CA2837665A1 Universal joint with cooling system |
| 04/03/2013 | EP2574790A1 A priming liquid supply system for a sub-sea pump or compressor |
| 04/03/2013 | CN202851350U Gear oil pump body |
| 04/03/2013 | CN202851341U Gear oil pump |
| 04/03/2013 | CN202851340U Double straight-tooth conjugated internal gear pump |
| 04/03/2013 | CN202851339U Trajectory rotor pump |
| 04/03/2013 | CN202851338U Improved-type externally meshed straight tooth cylinder gear pump |
| 04/03/2013 | CN202851337U Gear oil pump with filtering device |
| 04/03/2013 | CN202851336U Gear oil pump with driving device |
| 04/03/2013 | CN202851335U Low noise gear oil pump |
| 04/03/2013 | CN202851334U 齿轮油泵 Gear pumps |
| 04/03/2013 | CN202851333U Gear oil pump capable of randomly adjusting mounting angle |
| 04/03/2013 | CN202851332U Gear oil pump with protection function |
| 04/03/2013 | CN202851331U Corrosion-resisting gear oil pump |
| 04/03/2013 | CN202851330U Gear oil pump with filtration structure |
| 04/03/2013 | CN202851329U Three-screw pump |
| 04/03/2013 | CN202851328U Inner engaged gear device with splitter assembly |
| 04/03/2013 | CN103026069A Screw pump having an integrated pressure limiting valve |
| 04/03/2013 | CN103026068A External gear pump |
| 04/03/2013 | CN103026067A 内齿轮泵 Internal gear pump |
| 04/03/2013 | CN103016340A Melt pump capable of reducing self temperature |
| 04/03/2013 | CN103016337A Pump |
| 04/03/2013 | CN103016336A Permanent magnet synchronous electric metering pump based on planet cycloid rotor pump |
| 04/03/2013 | CN102094816B Master and auxiliary pump |
| 04/03/2013 | CN101629567B Gas-liquid mixing pump |
| 04/02/2013 | US8408888 Scroll compressor having relief ports to open first and second compression chambers |
| 04/02/2013 | US8408179 Rotary piston combustion engine |
| 03/28/2013 | WO2013041777A1 Oil-free rotary pump or compressor with semi-spherical vanes for compressing or pumping gaseous or liquid fluids |
| 03/28/2013 | WO2011158167A3 Fluidic gear machine with flow rate regulation |
| 03/28/2013 | US20130078131 Scroll compressor |
| 03/28/2013 | US20130078130 Scroll compressor |
| 03/28/2013 | US20130078129 Scroll compressor |
| 03/28/2013 | US20130078127 Vane cell pump |
| 03/28/2013 | DE102012217450A1 Wellendichtungsvorrichtung und pumpengerät mit der vorrichtung Shaft seal device and pump unit with the device |
| 03/28/2013 | DE102011083425A1 Innenzahnradpumpe Internal gear pump |
| 03/27/2013 | EP2573398A2 Lubricant system with capacity control valve |
| 03/27/2013 | CN202833153U Compact-structure type pump body structure for gear pump |
| 03/27/2013 | CN202833152U Rotor spindle structure for vane pump |
| 03/27/2013 | CN202833150U Front integrated pump body structure used for gear pump |
| 03/27/2013 | CN202833145U Duplex quantitative vane pump |
| 03/27/2013 | CN202833142U Hydraulic vane pump |
| 03/27/2013 | CN202833141U Double-acting vane pump |
| 03/27/2013 | CN202833140U High-pressure vane pump |
| 03/27/2013 | CN202833139U Constant flow vane pump |
| 03/27/2013 | CN202833138U Improved duplex quantitative vane pump |
| 03/27/2013 | CN202833137U Double-acting vane pump |
| 03/27/2013 | CN202833136U Pump core structure used for double-acting vane pump |
| 03/27/2013 | CN202833135U Improved type motor vane pump set |
| 03/27/2013 | CN202833134U Low-pressure type variable vane pump |