| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
|---|
| 09/07/1990 | WO1990010157A1 Scroll fluid machine |
| 09/05/1990 | EP0385915A2 Horizontal scroll compressor |
| 09/05/1990 | EP0385560A2 Compressor for heat pump and method of operating said compressor |
| 09/05/1990 | CN1045162A Fluid compressor |
| 09/05/1990 | CN1009479B Differential pressure lubrication system for rotary piston compressor |
| 09/04/1990 | WO1990010123A1 Vacuum drainage system |
| 09/04/1990 | US4954057 Scroll compressor with lubricated flat driving surface |
| 09/04/1990 | US4954056 Scroll machine with pin coupling |
| 08/29/1990 | EP0383810A1 Rotary displacement compressor |
| 08/28/1990 | US4952125 Nonlubricated screw fluid machine |
| 08/28/1990 | US4952122 Fluid compressor |
| 08/28/1990 | US4951638 Screw type mechanical supercharger |
| 08/28/1990 | CA1273326A1 Ball retainer for rotation preventing devices in scroll-type fluid displacement machines |
| 08/28/1990 | CA1273300A1 Distribution system for scroll machine |
| 08/21/1990 | US4950138 Spiral displacement machine with flexible eccentric guide arrangement |
| 08/21/1990 | US4950135 Piezoelectric powered scroll compressor |
| 08/16/1990 | EP0381790A1 Method and device for the compression of a gaseous medium |
| 08/16/1990 | EP0381682A1 Rotary piston compressor. |
| 08/15/1990 | CN1044701A Fluid compressor |
| 08/14/1990 | US4948347 Fluid compressor |
| 08/14/1990 | US4948345 Variable capacity compressor having a widened variable range of capacity |
| 08/09/1990 | WO1990008901A1 Rotary screw compressor with inlet chamber |
| 08/09/1990 | DE4002419A1 Compressor for vehicle air conditioning system - incorporates control valve to reduce bellows vibration |
| 08/08/1990 | EP0381061A2 Fluid compressor |
| 08/07/1990 | US4946361 Horizontal scroll compressor with oil pump |
| 08/07/1990 | US4946353 External stator rolling rotor scroll compressor |
| 08/01/1990 | EP0380439A2 Scroll compressor with axial compliancy |
| 07/26/1990 | WO1990008261A1 Rotor pair for a high-pressure screw-type compressor |
| 07/24/1990 | US4943216 Sliding-vane rotary compressor |
| 07/24/1990 | US4943214 Two-shaft type rotary machine having a tip circle diameter to shaft diameter within a certain range |
| 07/23/1990 | CA2005935A1 Scroll compressor with axial compliancy |
| 07/18/1990 | EP0378009A2 Screw rotor set |
| 07/18/1990 | CN2059465U High-speed rotor air pump for air horn |
| 07/18/1990 | CN2059464U Miniature air compressor with eccentric axle wheel |
| 07/17/1990 | US4941810 Sliding-vane rotary compressor |
| 07/17/1990 | CA1271732A1 Scroll-type machine with rotation controlling means and specific wrap shape |
| 07/12/1990 | WO1990007649A1 Compressor |
| 07/11/1990 | CN1008760B Hermetically sealed rotary compressor |
| 07/10/1990 | US4940396 Hermatic scroll type compressor with two casings and center blocks |
| 07/10/1990 | US4940395 Scroll type compressor with variable displacement mechanism |
| 07/10/1990 | US4940342 Compressor with a radial bearing for supporting a drive shaft |
| 07/04/1990 | EP0376373A1 Screw compressor |
| 07/04/1990 | EP0376049A2 Fluid compressor |
| 07/04/1990 | EP0376026A1 Positive-displacement machine using the spiral principle |
| 07/03/1990 | US4938669 Scroll compressor with axial compliancy |
| 06/27/1990 | EP0375207A2 Scroll apparatus control |
| 06/26/1990 | US4936757 Multi-section vacuum pump |
| 06/26/1990 | US4936112 Gas compressors |
| 06/26/1990 | CA1270798A1 Variable capacity scroll type fluid compressor |
| 06/20/1990 | EP0373876A2 Hermetically sealed scroll type refrigerant compressor |
| 06/20/1990 | EP0373269A1 Scroll type compressor with variable displacement mechanism |
| 06/20/1990 | CN1008467B Vortex tube type fluid devices |
| 06/19/1990 | USRE33236 Bearing device of sealed type scroll compressor |
| 06/19/1990 | US4934912 Sliding-vane rotary compressor with vibration cushioning members |
| 06/19/1990 | US4934910 Scroll-type fluid apparatus with radially compliant driving means |
| 06/19/1990 | US4934909 Scroll compressor with rotation preventing apparatus |
| 06/14/1990 | WO1990006447A1 Cellular blower |
| 06/14/1990 | WO1990006446A1 Rotary displacement compressor |
| 06/13/1990 | EP0372480A2 Screw compressor |
| 06/13/1990 | CN1008389B Compressor |
| 06/13/1990 | CA2005379A1 Hermetically sealed scroll type refrigerant compressor with a shaft seal mechanism |
| 06/12/1990 | US4932851 Noise reduction of rotary compressor by proper location of discharge port |
| 06/12/1990 | US4932845 Scroll type compressor with lubrication in suction chamber housing |
| 06/12/1990 | US4932844 Control section for a control system for controlling the internal volume of a rotary compressor |
| 06/07/1990 | DE3840764A1 Fluegelzellenverdichter Fluegelzellenverdichter |
| 06/06/1990 | EP0371167A1 Rotary vane pump |
| 06/06/1990 | CN2057969U Automotive double-shaft air pump |
| 06/06/1990 | CN2057968U Wobbler rotor air compression engine |
| 06/06/1990 | CN1042757A 偏心转子泵 Eccentric rotor pump |
| 06/05/1990 | US4930997 Portable medical suction device |
| 06/05/1990 | CA1269966A1 Rotary machine having screw rotor assembly |
| 05/31/1990 | WO1990005852A1 Rotary screw compressor with oil drainage |
| 05/29/1990 | US4929159 Variable-displacement rotary compressor |
| 05/29/1990 | US4929156 Variable capacity compressor |
| 05/29/1990 | US4928503 Scroll apparatus with pressure regulation |
| 05/23/1990 | EP0214164B1 Positive displacement machine, particularly pump |
| 05/23/1990 | DE3839252A1 Positive displacement machine according to the spiral principle |
| 05/22/1990 | US4927340 Synchronizing and unloading system for scroll fluid device |
| 05/22/1990 | US4927339 Rotating scroll apparatus with axially biased scroll members |
| 05/22/1990 | US4927333 Fluid pump |
| 05/16/1990 | EP0368124A1 Multistage Roots pump and its assembly method |
| 05/16/1990 | EP0368122A1 Multistage Roots vacuum pump |
| 05/15/1990 | US4925378 Rotary vane compressor with valve controlled pressure biased sealing means |
| 05/15/1990 | US4924839 Rotary blowers |
| 05/10/1990 | DE3937197A1 Multicell compressor - with borided high carbon pearlitic steel blades |
| 05/08/1990 | US4923377 Self-machining seal ring leakage prevention assembly for rotary vane device |
| 05/02/1990 | EP0366347A2 Improvements in mechanical pumps |
| 04/28/1990 | CA2001198A1 Rotary compressor of variable displacement type |
| 04/26/1990 | DE3835598A1 Rotary piston compressor with interrupted slip action |
| 04/26/1990 | DE3744866C2 Rotary piston compressor with radial channels |
| 04/25/1990 | EP0365204A2 Helical screw rotary compressor |
| 04/25/1990 | EP0365132A2 Scroll compressor |
| 04/24/1990 | US4919598 Vacuum pumps |
| 04/19/1990 | WO1990004108A1 Positive-displacement compressor |
| 04/19/1990 | WO1990004107A1 Machine for a gaseous medium |
| 04/18/1990 | CN1041428A Fluid compressor |
| 04/18/1990 | CN1007648B Wearless sealing type power machine with sliding blade |
| 04/18/1990 | CN1007645B Fluid compressor |
| 04/17/1990 | US4917584 Vane pump with annular aetainer limiting outward radial vane movement |
| 04/17/1990 | US4917583 Bearing support for a twin-shaft pump |