Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462)
10/1994
10/19/1994EP0620363A1 Integration of combustor-turbine units and pressure processors by means of integral-gear
10/19/1994CN2179921Y Vortex fluid machinery
10/19/1994CN1093777A Rotative bed compressor
10/18/1994US5356277 Refrigerant contains no chlorine; manganese phosphate coating on bearing surfaces to prevent cohesion and seizure
10/18/1994US5356276 Spiral displacement machine made of magnesium alloy
10/18/1994US5356271 Capacity control mechanism for scroll-type compressor
10/18/1994CA1332593C Scroll gas compressor
10/11/1994US5354184 Windage loss reduction arrangement for scroll fluid device
10/11/1994US5354179 Fluid rotating apparatus
10/11/1994CA1332387C Pre-testable and repairable hermetic scroll type compressor
10/05/1994EP0618366A1 Volumetric machine with planetary movement
10/04/1994US5352097 Vacuum pump
09/1994
09/29/1994WO1994022064A2 Quieted air compressor
09/29/1994WO1994021922A1 Co-rotation scroll compressor supercharger device
09/29/1994WO1994021921A1 Method and apparatus for regulating a compressor lubrication system
09/29/1994WO1994021920A1 Filling, fluid-transporting and pumping device
09/29/1994DE4409343A1 Displacer for a spiral displacement machine
09/28/1994EP0617201A1 Filling, fluid-transporting and pumping device
09/27/1994US5350286 Liquid injection type screw compressor with lubricant relief chamber
09/22/1994DE4092018C2 Scroll compressor
09/20/1994US5348457 Vane-type compressor with at least one suction hole
09/20/1994US5348455 Rotary compressor with rotation preventing pin
09/20/1994US5348448 Fluid rotating apparatus with plural drive motor synchronization system
09/15/1994CA2157267A1 Forced compression type pump
09/14/1994CN2177109Y Rotary sliding sheet type blower
09/13/1994US5346667 Method of manufacturing sintered aluminum alloy parts
09/13/1994US5346375 Delivery valve for a scroll compressor
09/13/1994US5346374 Rotating spiral pump with cooling between radial steps
09/13/1994US5345785 Scroll compressor and air conditioner using the same
09/13/1994CA2118899A1 Integration of combustor-turbine units and integral-gear pressure processors
09/13/1994CA2060807C Scroll compressor including drive pin and roller assembly having sliding wedge member
09/07/1994EP0614012A1 Scroll type positive displacement machine
09/06/1994US5344294 Scroll type fluid apparatus of decreased size
09/06/1994US5344085 Vacuum drainage system
09/01/1994DE4405157A1 Displacement machine for compressible media, and method for coating it with a grease- or paste-like coating composition
08/1994
08/31/1994EP0612371A1 Rotary screw machine with thrust balanced bearings.
08/31/1994CN2175841Y Coiled compressor with backpressure controlling mechanism
08/30/1994US5342186 Axial actuator for unloading an orbital scroll type fluid material handling machine
08/30/1994US5342184 Scroll machine sound attenuation
08/30/1994US5342183 Scroll compressor with discharge diffuser
08/30/1994CA1331750C Scroll type compressor
08/24/1994CN1091181A Energy-saving eddying machine for air conditioner
08/23/1994US5340292 Scroll compressor with relief port for reduction of vibration and noise
08/23/1994US5340287 Scroll-type compressor having a plate preventing excess lift of the crankshaft
08/18/1994WO1994018456A1 Control system for screw type supercharging apparatus
08/16/1994US5338159 Co-rotational scroll compressor supercharger device
08/16/1994CA2060587C Axially floating scroll member assembly
08/11/1994DE4404054A1 Refrigerant spiral compressor with casing protection devices
08/09/1994US5336070 Fluid compressor having roller bearing
08/09/1994US5336069 Rotary piston fluid pump
08/09/1994US5336068 Scroll-type fluid machine having the eccentric shaft inserted into the moving scroll
08/09/1994US5336058 Scroll-type compressor with variable displacement mechanism
08/09/1994US5335640 Rotor to casing seals for roots type superchargers
08/03/1994CN1090377A Fluid compressor
08/02/1994US5333999 Variable displacement compressor
07/1994
07/27/1994EP0608073A1 Scroll compressor having high temperature control
07/26/1994US5332377 Fluid compressor for drawing, compressing and charging a fluid
07/26/1994US5332376 Screw compressor for internal combustion engines
07/26/1994CA2049878C Scroll apparatus with enhanced lubricant flow
07/26/1994CA1330976C Rotary compressor gas routing for muffler system
07/26/1994CA1330973C Scroll type compressor with variable displacement mechanism
07/21/1994WO1994016228A1 Vacuum pump with a rotor
07/21/1994DE3744760C2 Compacting machine compressing fluid e.g. refrigeration compressor
07/19/1994US5330463 Scroll type fluid machinery with reduced pressure biasing the stationary scroll
07/19/1994US5330334 Compact Oldham coupling
07/19/1994US5329900 Rotary internal combustion engine
07/19/1994US5329788 Scroll compressor with liquid injection
07/13/1994CN2171703Y 旋转式压缩机 Rotary compressor
07/13/1994CN1025449C Turbocompressor with variable quantity mechanism
07/12/1994US5328342 Scroll compressor with slider contacting an elastic member
07/12/1994US5328341 Synchronizer assembly for a scroll fluid device
07/12/1994US5328340 Scroll type compressor, having welded end shells and shaft subframe
07/07/1994WO1994015100A1 Rotary screw compressor with shaft seal
07/05/1994US5326239 Fluid compressor having a horizontal rotation axis
06/1994
06/29/1994EP0604358A1 A scroll compressor with a thermally responsive bypass valve for high temperature protection
06/29/1994EP0603698A1 Rolling piston vacuum pump
06/29/1994CN1088666A Conveying screw pair used for rotative compresive pump
06/28/1994CA2051733C Co-rotational scroll apparatus with positive lubricant flow
06/28/1994CA1330430C Scroll type compressor
06/22/1994EP0602143A1 Rotor for a screw rotor machine.
06/21/1994US5322427 Rotary-blade air conditioner compressor for heavy-duty vehicle
06/21/1994US5322426 Displacement machine spiral shaped strip with different curvatures
06/21/1994US5322424 Two stage gas compressor
06/15/1994EP0601959A1 Scroll compressor
06/15/1994EP0601958A1 Sound abatement in rotary compressors
06/15/1994EP0601789A1 Scroll machine with reverse rotation protection
06/14/1994US5320508 Rotary pump and rotor-shaft subassembly for use therein
06/14/1994US5320507 Scroll machine with reverse rotation protection
06/14/1994US5320506 Oldham coupling for scroll compressor
06/14/1994US5320505 Electrochemical machining of scroll wraps
06/14/1994CA2074444C Combination lift piston/axial port unloader arrangement for a screw compressor
06/09/1994WO1994013053A1 Method of and apparatus for assembling an electric motor capable of using a motor housing having low dimensional precision
06/09/1994DE4341148A1 Spiral compressor with seal located along spiral - has centre of delivery opening distance from end of stationary spiral relative to centre of phantom circuit
06/08/1994EP0600313A1 Lubrication for rotary compressor
06/08/1994EP0454794B1 Vacuum drainage system
06/08/1994CN2168101Y Vortex disk structure
06/08/1994CN2168100Y Vortex type compressor
06/08/1994CN2168099Y Vortex compressor for cardic external counter pulsation
06/07/1994US5318425 Displacement machine according to the spiral principle
06/07/1994US5318424 Minimum diameter scroll component