| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 06/10/2009 | EP2066905A1 A rotary pump with vanes |
| 06/10/2009 | CN201255112Y Column vane compressor or vacuum pump |
| 06/10/2009 | CN201255111Y Column compressor or vacuum pump |
| 06/10/2009 | CN101454575A Improved water- injected screw compressor element. |
| 06/10/2009 | CN101454574A Scroll type fluid machine |
| 06/10/2009 | CN101451527A Novel screw compressor end face serrate |
| 06/10/2009 | CN100498121C 致冷剂循环装置 A refrigerant circulating apparatus |
| 06/10/2009 | CN100498119C Refrigerant cycling device |
| 06/10/2009 | CN100497940C Scroll wrap tip with abradable selectively applied coating and load-bearing surface |
| 06/09/2009 | US7546178 Aligner evaluation system, aligner evaluation method, a computer program product, and a method for manufacturing a semiconductor device |
| 06/09/2009 | US7544047 Compressor with two cooling chambers |
| 06/04/2009 | WO2009070285A2 Open drive scroll compressor with lubrication system |
| 06/04/2009 | WO2009069520A1 Screw compressor |
| 06/04/2009 | US20090142214 Rotary compressor |
| 06/04/2009 | US20090142212 Rotary blower with noise abatement jacket enclosure |
| 06/04/2009 | DE19848413B4 Motor-Pumpeneinheit Motor-pump unit |
| 06/04/2009 | DE102007057813A1 Rolling piston compressor arrangement for use as e.g. hydraulic motor, has pair of axially supported cylinders that are tangentially arranged to each other, where lateral surfaces of cylinders are mutually passed on |
| 06/03/2009 | CN201250775Y Double-channel inflating sealing device of double-screw compressor |
| 06/03/2009 | CN201250774Y Low-pumping speed oil-free scroll vacuum pump |
| 06/03/2009 | CN101449062A Screw compressor comprising a relief valve |
| 06/03/2009 | CN101449061A Scroll compressor |
| 06/03/2009 | CN100494686C Rotary fluid machine |
| 06/03/2009 | CN100494685C Scroll compressor |
| 06/03/2009 | CN100494684C Rolling piston type compressor |
| 06/03/2009 | CN100494683C Screw compressor |
| 06/03/2009 | CN100494678C 压缩机 Compressor |
| 06/03/2009 | CN100494639C Fluid machine |
| 06/03/2009 | CA2644879A1 Roots-type blower reduced acoustic signature method and apparatus |
| 06/02/2009 | US7540728 Method of transforming a motion in a volume screw machine of rotary type and rotary screw machine |
| 06/02/2009 | US7540726 Scroll compressor and method for machining scroll wrap |
| 06/02/2009 | CA2496951C Compact rotary compressor with carbon dioxide as working fluid |
| 05/28/2009 | WO2009066416A1 Compressor integral with expander |
| 05/28/2009 | WO2009066413A1 Compressor integral with expander |
| 05/28/2009 | WO2009012606A3 Displacement machine according to the spiral principle, comprising a bearing assembly on both sides |
| 05/28/2009 | WO2008152055A9 Orbiting-spiral scroll pump or compressor |
| 05/28/2009 | DE102007043350B3 Vakuumpumpe sowie Verfahren zur Steuerung einer Gasballastzufuhr zu einer Vakuumpumpe Vacuum pump and method of controlling a gas ballast supply to a vacuum pump |
| 05/27/2009 | CN201246308Y Bearing mechanism of single screw compressor inner star wheel rotor |
| 05/27/2009 | CN101441006A Cooling unit and compressor |
| 05/27/2009 | CN101440813A Low noise type liquid-cooled compressor |
| 05/27/2009 | CN101440812A Lubrication apparatus of rotary compressor and control method thereof |
| 05/27/2009 | CN101440811A Lubrication apparatus of horizontal rotary compressor and control method thereof |
| 05/27/2009 | CN101440810A Liquid container of horizontal compressor |
| 05/27/2009 | CN101440808A Oil surface control device of horizontal rotary compressor |
| 05/27/2009 | CN101440806A Vane type revolving compressor |
| 05/27/2009 | CN101440802A Rotor pump |
| 05/27/2009 | CN101440798A Movable barrel type rotary plunger oil well pump |
| 05/27/2009 | CN101440797A Multi-joint centering self-rotating oil well pump |
| 05/27/2009 | CN100492798C Compressor assembly and cooling system |
| 05/27/2009 | CN100491737C Apparatus for varying capacity of scroll compressor |
| 05/27/2009 | CN100491736C Gas/liquid separator device for rotary compressor |
| 05/27/2009 | CN100491734C Single-winged vacuum pump |
| 05/27/2009 | CN100491733C Full cover type air compressor device for mining |
| 05/27/2009 | CN100491732C Spiral fluid machine |
| 05/27/2009 | CN100491731C Compressor |
| 05/26/2009 | US7537440 Scroll compressor with multiple isolated inlet ports |
| 05/26/2009 | US7537436 Compressor |
| 05/22/2009 | WO2009064042A1 2 stage rotary compressor |
| 05/22/2009 | WO2009063890A1 Multi-stage dry pump |
| 05/22/2009 | WO2009063820A1 Dry pump |
| 05/22/2009 | WO2009062931A2 High vacuum pump for pumping high temperature saturated steam |
| 05/22/2009 | WO2009062592A2 Sintered rotor |
| 05/22/2009 | WO2009062366A1 A discharge valve device of a rotary compressor |
| 05/22/2009 | WO2009062365A1 A suction device for capacity-controlled rotary compressor |
| 05/22/2009 | WO2009044197A3 A multi stage, clam shell vacuum pump |
| 05/22/2009 | WO2009024698A3 Refrigeration compressor with variable speed spirals |
| 05/21/2009 | US20090129960 Variable displacement pump |
| 05/20/2009 | EP2060790A1 High vacuum pump for pumping high temperature saturated steam |
| 05/20/2009 | EP2060789A1 Screw pump and screw rotor |
| 05/20/2009 | EP2060739A1 Multi-stage rotary fluid machine and refrigeration cycle device |
| 05/20/2009 | EP2060275A1 Steam sterilizing system |
| 05/20/2009 | EP2059680A2 Two stage pressure regulation system for variable displacement hydraulic pumps |
| 05/20/2009 | CN201241836Y 天然气压缩机 Natural Gas Compressor |
| 05/20/2009 | CN201241828Y Vacuum pump |
| 05/20/2009 | CN201241827Y Improved screw rod main machine structure |
| 05/20/2009 | CN101438061A 真空泵 Vacuum pump |
| 05/20/2009 | CN101435425A Novel tooth form of screw rod rotor of double-screw compressor |
| 05/20/2009 | CN101435424A Device for manufacturing container assembly |
| 05/20/2009 | CN100489311C Compressor machine with two counter-rotating rotors |
| 05/20/2009 | CN100489310C Scroll fluid machine |
| 05/19/2009 | US7534100 Rotary fluid machine |
| 05/19/2009 | CA2516391C Scroll compressor with bifurcated flow pattern |
| 05/19/2009 | CA2418324C Hybrid compressor |
| 05/14/2009 | WO2009061039A1 2 stage rotary compressor |
| 05/14/2009 | WO2009061038A1 2 stage rotary compressor |
| 05/14/2009 | WO2009060398A1 Scroll type fluid machinery |
| 05/14/2009 | WO2009059488A1 A rotary compressor with low pressure in its shell and methods for controlling its cold media and oil and application thereof |
| 05/14/2009 | US20090123316 Gear pump |
| 05/13/2009 | EP2058521A1 Pumping unit and corresponding heating device |
| 05/13/2009 | EP2058519A1 Rotary expanding or compressing mechanism provided in fluid channel with blades for traversing shaft |
| 05/13/2009 | CN201236803Y Sliding blade for rotary vane compressor |
| 05/13/2009 | CN201236800Y Rotary vane compressor |
| 05/13/2009 | CN201236799Y Translational rotating compression device |
| 05/13/2009 | CN201236798Y Scroll compressor |
| 05/13/2009 | CN201236797Y Scroll compressor |
| 05/13/2009 | CN101432523A Reservoir for a replacement fluid for a device and a device, together with an oil separator fitted with such a reservoir |
| 05/13/2009 | CN101429957A Power equipment of air compressor |
| 05/13/2009 | CN101429940A Compressor with muffler |
| 05/13/2009 | CN101429939A Compression vacuum dual-purpose machine |
| 05/13/2009 | CN100487250C Rotary fluid machine |
| 05/13/2009 | CN100487249C Tempering method for a screw-type vacuum pump |