| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 03/11/2009 | CN100467871C Horizontal type orbiting vane compressor |
| 03/11/2009 | CN100467870C Scroll-type compressor |
| 03/11/2009 | CN100467869C Compressor |
| 03/10/2009 | US7500838 Vacuum pump with a pair of screw rotors |
| 03/10/2009 | US7500836 Compressor |
| 03/10/2009 | US7500463 Shuba rotary internal combustion engine with rotating combustion chambers |
| 03/10/2009 | CA2506544C Filtration vessel and method for rotary gas compressor system |
| 03/05/2009 | WO2009028633A1 Multicylinder rotary type compressor, and refrigerating cycle apparatus |
| 03/05/2009 | WO2009028632A1 Rotary compressor and refrigeration cycle device |
| 03/05/2009 | WO2009028383A1 Scroll type fluid machine |
| 03/05/2009 | WO2009028261A1 Rotary compressor |
| 03/05/2009 | WO2009028127A1 Screw rotor working method, working apparatus, and screw rotor |
| 03/05/2009 | US20090060767 Axial compliance |
| 03/05/2009 | DE102007040759A1 Oil-flooded screw-type compressor, has axial force compensation device arranged on shaft end of main rotor, and bearing play ring arranged in periphery of axial bearing that includes axial extension joined to support rings that hold ring |
| 03/04/2009 | EP2031249A2 Capacity control device for screw compressor |
| 03/04/2009 | EP2030856A1 Method and implementation of the method and necessary device for increasing the efficiency of the power system for a vehicle |
| 03/04/2009 | EP2029860A1 Slide valve actuation for overpressure safety |
| 03/04/2009 | CN201202655Y Explosion -proof type oil and gas recovery vacuum pump |
| 03/04/2009 | CN201202649Y Air-cooled type air compressor screw rod rotor oil cooling device |
| 03/04/2009 | CN201202646Y Horizontal rotary compressor |
| 03/04/2009 | CN201202645Y Oil heating apparatus for refrigeration screw compressor |
| 03/04/2009 | CN201202644Y Overturn-proof apparatus of swirl compressor |
| 03/04/2009 | CN201202643Y Revolution swirl parts of swirl compressor |
| 03/04/2009 | CN101377198A Capacity control device for screw compressor |
| 03/04/2009 | CN101377197A Axial compliance |
| 03/04/2009 | CN100465453C An air-exhaust structure of compressors |
| 03/04/2009 | CN100465452C A vacuum pump |
| 03/04/2009 | CN100465451C An overheating prevention apparatus of vortex compressors |
| 03/04/2009 | CN100465448C A single-winged vacuum pump |
| 03/04/2009 | CN100465447C A rotary compressor |
| 03/04/2009 | CN100465446C A gear type compressor |
| 03/04/2009 | CN100465445C A gear type compressor |
| 03/04/2009 | CN100465437C An enclosed compressor |
| 03/03/2009 | US7497674 Scroll compressor having shoulder and rotation-preventing portions positioned as different phases |
| 02/26/2009 | WO2009025230A1 Scroll fluid machine |
| 02/26/2009 | WO2009024698A2 Refrigeration compressor with variable speed spirals |
| 02/26/2009 | WO2009024262A1 Multi-level rotary piston vacuum pump or compressor |
| 02/26/2009 | WO2009023974A1 Spiral-type positive-displacement machine |
| 02/26/2009 | US20090053088 Reduced Rotor Assembly Diameter Vane Pump |
| 02/25/2009 | EP1948938B1 Pump with a cylindrical cooling bush |
| 02/25/2009 | CN101375063A Vacuum pump unit |
| 02/25/2009 | CN101375062A Screw compressor |
| 02/25/2009 | CN101372972A Drive shaft for compressor and high pressure swirl compressor using the same |
| 02/25/2009 | CN101372968A Sealed-type compressor |
| 02/25/2009 | CN101372967A Pumping unit of sealed compressor |
| 02/25/2009 | CN101372966A Rotary compressor |
| 02/25/2009 | CN101372965A Compressor |
| 02/25/2009 | CN101372964A High and low pressure separation apparatus of swirl compressor |
| 02/25/2009 | CN101372963A Vacuum preventing device of swirl compressor |
| 02/25/2009 | CN101372962A Swirl compressor |
| 02/25/2009 | CN101372961A Oil recovery apparatus of swirl compressor |
| 02/25/2009 | CN100464075C Scroll compressor |
| 02/19/2009 | WO2009022680A1 Screw compressor |
| 02/19/2009 | WO2009021474A1 Pendulum slide vacuum pump |
| 02/19/2009 | WO2008137244A3 Portable air compressor/generator control method and system |
| 02/19/2009 | US20090047163 Roots Pump and Fuel Cell System |
| 02/18/2009 | EP2025940A2 Vane compressor |
| 02/18/2009 | EP2025939A2 Stepped scroll compressor with staged capacity modulation |
| 02/18/2009 | EP2024642A1 Screw compressor with integral oil channels |
| 02/18/2009 | CN201196150Y Vehicle-mounted screw air compressor |
| 02/18/2009 | CN101371044A 真空泵 Vacuum pump |
| 02/18/2009 | CN101368567A Frame head apparatus of translational rotary compressor |
| 02/18/2009 | CN101368566A Cylindrical compressor or vacuum pump |
| 02/18/2009 | CN101368565A Cylindrical vane compressor or vacuum pump |
| 02/18/2009 | CN101368564A Integral translational rotating compression device |
| 02/18/2009 | CN100462559C 空气泵 Air Pump |
| 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 | US7491034 Compressor protection and diagnostic system |
| 02/12/2009 | WO2009020106A1 Compression mechanism and scroll compressor |
| 02/12/2009 | WO2009019882A1 Single-screw compressor, and screw rotor machining method |
| 02/12/2009 | WO2009019880A1 Single-screw compressor |
| 02/12/2009 | WO2009018906A1 Vacuum pump |
| 02/12/2009 | US20090041589 Oil-Injected Compressor with a Temperature Switch |
| 02/12/2009 | DE202008013732U1 Wassereingespritzte Schraubenkompressoranlage Water-injected screw compressor system |
| 02/12/2009 | DE102005000897B4 Spiralverdichter mit variabler Leistung The scroll type compressor with variable capacity |
| 02/11/2009 | EP1348077B1 Refrigeration compressor |
| 02/11/2009 | CN201193612Y Main unit of twin-screw air compressor |
| 02/11/2009 | CN201193611Y Static scroll limiting mechanism in scroll compressor |
| 02/11/2009 | CN101365881A Pump and pumping system utilizing the same |
| 02/11/2009 | CN101363438A Vane compressor |
| 02/11/2009 | CN100460685C Leakage detection system and method used for delivering leakage detector by a vacuum pump |
| 02/11/2009 | CN100460684C Oilless roots vacuum pump with mechanical seal |
| 02/11/2009 | CN100460683C Capacity modulated scroll machine |
| 02/11/2009 | CN100460682C Scroll compressor with vapor injection |
| 02/10/2009 | US7488166 Rotary volumetric machine |
| 02/10/2009 | US7488165 Compressor having back pressure vane controlled for improving oil distribution |
| 02/05/2009 | WO2009017297A1 2 stage rotary compressor |
| 02/05/2009 | WO2009017157A1 Scroll type fluid machine |
| 02/05/2009 | WO2009015544A1 A sliding vane torsion spring for a rotary compressor and its application |
| 02/05/2009 | US20090035168 Scroll-type refrigerant compressor |
| 02/04/2009 | EP2020508A1 Overpressure safety device for a vacuum pump |
| 02/04/2009 | CN201190666Y Floating seal ring and scroll compressor using the floating seal ring |
| 02/04/2009 | CN201190665Y Low vacuum and large bled air rate vacuum pump special for milking |
| 02/04/2009 | CN101360899A Internal combustion engine |
| 02/04/2009 | CN101358597A Compressor |
| 02/04/2009 | CN101358596A Fluid machinery |
| 02/04/2009 | CN101358594A Digital-controlled rotary compressor |
| 02/04/2009 | CN101358593A Improved window air conditioner compressor |
| 02/04/2009 | CN101358592A Stepped scroll compressor with staged capacity modulation |
| 02/04/2009 | CN100458167C Method of coating fluorocarbon resin and sliding part and gas compressor using said method |