| Patents for F04C 23 - Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids (6,201) |
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| 05/15/2013 | CN103105022A Screw expansion scroll compressor |
| 05/15/2013 | CN103104491A Roots and claw-type rotor combined multi-stage dry vacuum pump |
| 05/14/2013 | CA2682998C Improved servicing arrangement for a portable air compressor/generator |
| 05/08/2013 | EP2589746A2 Rotary Compressor |
| 05/08/2013 | CN202926631U Vacuumizing system for steam turbine set |
| 05/08/2013 | CN202926630U Rotary compressor and multi-cylinder rotary compressor |
| 05/08/2013 | CN103089634A Motor-driven compressor |
| 05/08/2013 | CN103089633A Motor compressor |
| 05/08/2013 | CN103089632A Rotary compressor |
| 05/08/2013 | CN103089631A Rotary compressor |
| 05/08/2013 | CN103089630A Rotary compressor |
| 05/08/2013 | CN103089629A Compressor |
| 05/08/2013 | CN103089628A Rotary compressor |
| 05/08/2013 | CN103089627A Rotary compressor |
| 05/08/2013 | CN103089626A Improved oil seal type two-stage vacuum pump |
| 05/08/2013 | CN103089625A Improved Roots water ring vacuum set |
| 05/02/2013 | WO2013061957A1 Multi-cylinder rotary compressor and method for joining division plate between compression chambers thereof |
| 05/02/2013 | WO2013061879A1 Multi-cylinder rotary compressor |
| 05/02/2013 | WO2013061606A1 Rotary compressor and refrigeration cycle device |
| 05/01/2013 | EP2587061A2 Motor-driven compressor |
| 05/01/2013 | EP2587060A1 Motor-driven compressor |
| 05/01/2013 | EP2587059A1 Portable, rotary vane vacuum pump with removable oil reservoir cartridge |
| 05/01/2013 | CN202914314U Multi-cylinder rotary-type compressor and refrigeration cycle device |
| 05/01/2013 | CN202914313U Double-rotor claw-type strong-flow pump |
| 05/01/2013 | CN103075345A 滚动转子式压缩机 Scroll compressor rotor |
| 05/01/2013 | CN103075344A Variable-capacity two-stage enthalpy-increase compressor and air-conditioning system |
| 05/01/2013 | CN102116293B Helical compressor for refrigerating medium |
| 04/25/2013 | WO2013057946A1 Rotary compressor having two cylinders |
| 04/25/2013 | US20130098100 Refrigeration compressor |
| 04/24/2013 | EP2584199A2 Motor-driven compressor |
| 04/24/2013 | EP2582979A2 Short-shaft electric compressor |
| 04/24/2013 | CN202900662U Integrated screw air compressor |
| 04/24/2013 | CN202900661U Novel installation structure of Roots blower |
| 04/24/2013 | CN202900660U Dual-rotor two-stage enthalpy increasing compressor, air conditioner and heat pump water heater |
| 04/24/2013 | CN202900657U Screw compressor and oil way circulating system as well as air conditioning unit |
| 04/24/2013 | CN103069170A Positive displacement compressor |
| 04/24/2013 | CN103062055A Low-medium-pressure energy-saving single screw compressor |
| 04/24/2013 | CN103062054A Rotor vortex combined type compressor and air-conditioning system comprising same |
| 04/24/2013 | CN101896724B Integrated electric compressor |
| 04/18/2013 | WO2011157409A3 Electric compressor |
| 04/17/2013 | EP2581605A2 Scroll compressor with bypass hole |
| 04/17/2013 | EP2581604A2 Scroll compressor |
| 04/17/2013 | CN202883381U Screw rod type water cooling air compressor energy-saving structure |
| 04/17/2013 | CN202883380U Dual-cylinder compressor with middle baffle plates for sucking air |
| 04/17/2013 | CN103047145A Vacuum pump transmission structure |
| 04/17/2013 | CN103047141A Mechanical and electrical double-driven scroll compressor with single acting disc |
| 04/10/2013 | EP2578886A1 Scroll compressor and air conditioner including the same |
| 04/10/2013 | EP2578885A1 Scroll compressor and air conditioner including the same |
| 04/10/2013 | CN202867224U Intermediate cooling medium flow passage and compressor comprising same |
| 04/10/2013 | CN202867221U Compressor with non-magnetic high-manganese steel balance weights |
| 04/10/2013 | CN202867217U Two-way exhaust claw-type pump |
| 04/10/2013 | CN202867216U Double-cylinder positive displacement compressor |
| 04/10/2013 | CN103038514A Vane compressor |
| 04/10/2013 | CN103032334A Screw compressor |
| 04/10/2013 | CN103032331A Compressor and application thereof |
| 04/10/2013 | CN103032330A Compressor and application thereof |
| 04/10/2013 | CN103032329A 涡旋式压缩机 Scroll compressor |
| 04/10/2013 | CN103032328A Multi-cylinder rotary type compressor |
| 04/10/2013 | CN103032322A Direct-suction compressor |
| 04/10/2013 | CN101975167B Compressor control system |
| 04/10/2013 | CN101965438B Scroll compressor build assembly |
| 04/10/2013 | CN101684815B Secondary rotary compressor |
| 04/04/2013 | WO2013047307A1 Hermetically closed compressor and refrigeration cycle device |
| 04/03/2013 | EP2574791A2 Scroll compressor |
| 04/03/2013 | CN202851356U Horizontal compressor with symmetrical double cylinders |
| 04/03/2013 | CN202851355U Single-stage and double-stage interchangeable double-cylinder compressor |
| 04/03/2013 | CN202851354U Multilevel floating vortex vacuum pump |
| 04/03/2013 | CN103026071A Hermetically sealed compressor |
| 04/03/2013 | CN103016348A Motor-driven compressor |
| 04/03/2013 | CN103016347A Motor-driven compressor |
| 03/28/2013 | WO2013042527A1 Compressor |
| 03/28/2013 | WO2013042141A1 Bladed expander |
| 03/27/2013 | EP2573399A2 Motor-driven compressor |
| 03/27/2013 | CN202833170U Air compressor convenient to maintain |
| 03/27/2013 | CN202833169U Rotating compressor |
| 03/27/2013 | CN202833168U Compressor |
| 03/27/2013 | CN202833167U Compressor |
| 03/27/2013 | CN202833165U Liquid ring type vacuum pump set |
| 03/27/2013 | CN1892034B Two stage type screw compressor |
| 03/27/2013 | CN102996454A Single-stage disk double-acting scroll compressor |
| 03/27/2013 | CN102996453A Electric compressor |
| 03/27/2013 | CN102996452A Compressor |
| 03/27/2013 | CN102159906B Refrigerating apparatus |
| 03/20/2013 | CN202811358U Simply-assembled portable compressor |
| 03/20/2013 | CN101925744B 旋转式流体机械 Rotary fluid machine |
| 03/20/2013 | CN101725502B Vacuum pumping system design for vacuum container |
| 03/19/2013 | US8398386 2 stage rotary compressor |
| 03/14/2013 | US20130064697 Electric compressor |
| 03/13/2013 | CN202789525U Twin-stage enthalpy increasing compressor |
| 03/13/2013 | CN102966545A Compression device |
| 03/13/2013 | CN102966544A Two-stage enthalpy-increasing compressor |
| 03/13/2013 | CN101688535B Multicylinder rotary type compressor, and refrigerating cycle apparatus |
| 03/07/2013 | DE10247668B4 Vakuumpumpe Vacuum pump |
| 03/06/2013 | EP2565455A2 Scroll compressor having a shaft cover |
| 03/06/2013 | CN202768401U Scroll motor driven compressor and shell thereof |
| 03/06/2013 | CN202768400U Compressor pump and compressor with same |
| 03/06/2013 | CN202768398U Swing piston-type electric vacuum pump |
| 03/06/2013 | CN102953994A Double-cylinder rolling rotor type compressor pump body and pump body assembly method |
| 03/06/2013 | CN101482117B Two-stage rotary compressor |
| 02/28/2013 | WO2013027237A1 Two-stage compressor, and heat pump device |