Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462)
07/1987
07/07/1987US4677949 Scroll type fluid displacement apparatus
07/01/1987EP0227249A1 Axial sealing mechanism for scroll type fluid displacement apparatus
06/1987
06/30/1987US4676726 Rotary compressor
06/30/1987US4676075 Scroll-type compressor for helium gas
06/30/1987CA1223479A1 Axial clearance adjustment mechanism for scroll type fluid displacement apparatus
06/25/1987DE3639944A1 Standardised unit
06/25/1987DE3639943A1 Vane pump
06/23/1987US4674963 Scroll type machine with tilting thrust bearing
06/18/1987WO1987003651A1 Intermittent service screw compressor
06/16/1987US4673340 Variable capacity scroll type fluid compressor
06/16/1987US4673339 Scroll compressor with suction port in stationary end plate
06/16/1987CA1222989A1 Scroll type fluid displacement apparatus with oil separating mechanism
06/16/1987CA1222988A1 Scroll type fluid displacement apparatus
06/16/1987CA1222987A1 Scroll type fluid displacement apparatus
06/16/1987CA1222986A1 Scroll type fluid compressor unit
06/16/1987CA1222985A1 Scroll-type fluid displacement apparatus
06/16/1987CA1222983A1 Scroll-type fluid displacement apparatus
06/16/1987CA1222982A1 Scroll-type fluid compressor
06/10/1987EP0225126A1 Variable capacity vane compressor
06/10/1987EP0225070A1 Port arrangement for rotary positive displacement blower
06/10/1987EP0224878A2 Machine for the compression and transport of fluids
06/10/1987CN86206061U Stator for double-acting vaned oil pump
06/09/1987US4671751 Screw rotor tooth profile
06/09/1987US4671750 Screw rotor mechanism with specific tooth profile
06/09/1987US4671749 Screw compressor
06/09/1987CA1222734A1 Scroll machine using discharge pressure for axial sealing
06/09/1987CA1222733A1 Scroll machine with discharge passage through orbiting scroll plate and associated lubrication system
06/09/1987CA1222732A1 Scroll type fluid displacement apparatus
06/02/1987US4669963 Rolling piston type rotary machine
06/02/1987US4669962 Scroll compressor with pressure differential maintained for supplying oil
05/1987
05/27/1987CN86205327U Chute blade compressor with rotary seal rack
05/27/1987CN86205082U Blade iubricating pump with bidirectional valve
05/26/1987US4668172 Compressor having discharge valve means adapted to enhance the coefficient of performance of the compressor
05/21/1987WO1987003048A1 Screw rotor compressor and refrigeration plant
05/21/1987WO1987003047A1 Rotary pumps
05/20/1987EP0222109A1 Multiple cylinder rotary compressor
05/20/1987EP0222082A1 Exhaust-driven screw charger
05/19/1987US4666386 Rotary pump
05/19/1987US4666385 Roots type blower
05/19/1987US4666384 Roots type blower with reduced gaps between the rotors
05/19/1987US4666381 Lubricant distribution system for scroll machine
05/13/1987CN86207054U End sealing mechanism for rotary piston compressor
05/12/1987US4664601 Operation control system of rotary displacement type vacuum pump
05/06/1987EP0220801A1 Variable volume gas compressor
05/05/1987US4662832 Screw type compressor
05/05/1987US4662190 Integral slide valve-oil separator apparatus in a screw compressor
04/1987
04/29/1987CN86107541A Axial sealing mechanism for scroll type fluid displacement apparatus
04/29/1987CN86104225A Rotary compressor with vane slot pressure groove
04/23/1987WO1987002426A1 Vane cell compressor
04/14/1987US4657495 Rotor-shaft bearing apparatus for rotary compressors
04/14/1987US4657493 Rotary-sleeve supporting apparatus in rotary compressor
04/14/1987US4657491 Blade sealing for impeller pumps
04/14/1987CA1220379A1 Rotation preventing device for an orbiting piston type fluid displacement apparatus
04/08/1987EP0217533A1 Variable volume gas compressor
04/08/1987EP0217349A2 Scroll compressor
04/08/1987EP0217025A2 Screw rotors for compressors or the like
04/07/1987US4655697 Scroll-type apparatus with gap adjustment means
04/07/1987US4655696 Anti-rotation coupling for a scroll machine
04/01/1987CN86105602A Turbocompressor with variable quantity mechanism
04/01/1987CN86105417A Scroll type compressor with variable displacement machanism
03/1987
03/31/1987US4653991 Vane type compressor with fluid pressure biased vanes
03/26/1987DE3532917A1 Vane pump
03/24/1987US4652223 Roots compressor for compressing of gaseous media
03/18/1987EP0214164A1 Positive displacement machine, particularly pump.
03/17/1987US4650405 Scroll pump with axially spaced pumping chambers in series
03/17/1987US4650398 Bearing unit with integrated pump
03/17/1987US4649612 Method of manufacturing a rotor for rotary fluid pumps
03/17/1987US4649611 Method of and apparatus for positioning compressor scroll member
03/10/1987US4648819 Vane-type rotary compressor with rotary sleeve
03/10/1987US4648818 Rotary sleeve bearing apparatus for a rotary compressor
03/10/1987US4648817 Supercharger for supplying a heat engine of a motor vehicle
03/10/1987US4648814 Scroll fluid machine with oil injection part and oil relieving passage
03/04/1987EP0212570A2 Rolling piston compressor
03/04/1987CN85104862A Rotary fluid machines
03/03/1987CA1218636A1 Compressor
02/1987
02/25/1987EP0211672A1 Scroll type compressor with variable displacement mechanism
02/25/1987EP0211514A1 Rotary machine having screw rotor assembly
02/25/1987EP0210984A1 Fluid motor or pump
02/25/1987CN86103317A Eddy fluid machinery
02/25/1987CN85205644U Shaft seal construction of vortex compressor
02/24/1987US4645437 Scroll compressors with annular sealed high pressure thrust producing member
02/24/1987US4645436 Scroll type fluid displacement apparatus with improved anti-wear device
02/24/1987US4645435 Rotation preventing device for an orbiting member of a fluid displacement apparatus
02/24/1987US4645429 Rotary compressor
02/18/1987CN85200749U 空气压缩机 Air compressor
02/17/1987US4643655 Backflow passage for rotary positive displacement blower
02/10/1987US4642034 Scroll type compressor with displacement adjusting mechanism
01/1987
01/29/1987DE3623330A1 Centrifugal compressor
01/29/1987DE3525933A1 Spiral compressor
01/28/1987EP0209788A2 A roots type pump
01/27/1987US4639199 Two-shaft vacuum pump with internal compression
01/27/1987US4638570 Supercharger assembly and rotor phasing fixture and method of partially assembling
01/17/1987CN85101566A Coolant discharge valve assembly in compressor
01/13/1987US4636156 Screw rotor machines with specific tooth profiles
01/13/1987US4636153 Rotary compressor with blind hole in end wall that aligns with back pressure chamber
01/13/1987US4636152 Rotary compressor
01/10/1987CN85101431A 旋转式流体机械 Rotary fluid machine
01/07/1987EP0105315B1 Compressor of hermetical type
01/07/1987CN85104920A Rotary type fluid machine
01/06/1987US4634349 Variable displacement fluid pump