Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04C - Rotary-piston, or oscillating-piston, positive-displacement machines for liquids; Rotary-piston, or oscillating-piston, positive-displacement pumps › F04C 18 - Rotary-piston pumps specially adapted for elastic fluids
Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462)
08/1998
08/18/1998US5795141 Scroll type compressor having anti-rotation pin members
08/18/1998CA2075392C Method for making a composite aluminum article
08/13/1998WO1998034759A2 Ergonomically friendly random orbital sander construction
08/12/1998EP0857254A1 Transmission including a two-part clutch arrangement
08/12/1998EP0591539B1 Rotary compressor in which blade and roller are integrated
08/12/1998CN1190160A Rotary sealed compressor and refrigeration cycle device thereof
08/11/1998US5791887 Scroll element having a relieved thrust surface
08/11/1998US5791886 Scroll type fluid displacement apparatus with an axial seal plate
08/11/1998US5791885 Scroll compressor having positioning means for axially movable non-orbiting scroll
08/11/1998US5791884 Scroll compressor with sealed terminal
08/11/1998US5791883 Compressor driver
08/11/1998US5791315 Control system for screw type supercharging apparatus
08/05/1998CN2287217Y Thrust vortex compressor
08/05/1998CN1189582A Scroll compressor with controlled fluid venting to back pressure chamber
08/05/1998CN1039445C Rotar piston compressor and sound abatement of it
08/04/1998US5788470 Fluid machine having two spiral working mechanisms with a stepped shape section
08/04/1998CA2096686C Horizontal hermetic compressor
07/1998
07/29/1998EP0855519A2 Monoblock controller for automatically regulating the pressure in a reservoir
07/29/1998EP0855513A1 Scroll hydraulic machine with balancing means
07/29/1998EP0855512A1 Scroll compressor with controlled fluid venting to back pressure chamber
07/29/1998EP0855510A2 Scroll-type fluid displacement apparatus
07/29/1998EP0855509A1 Scroll hydraulic machine
07/29/1998EP0855508A1 Scroll for scroll compressor
07/29/1998CN1188855A Scroll hydraulic machine
07/28/1998US5785149 Screw-type compressor
07/22/1998EP0854293A1 Power-variable compressor and air conditioner using the same
07/22/1998EP0854292A1 Compressor with pressure relief valve
07/22/1998EP0854291A2 Modular bypass system for a supercharger
07/22/1998EP0854290A1 Compressor with at least one compressor stage and a moisture separator
07/22/1998EP0854289A1 Scroll fluid apparatus
07/22/1998CN1188528A Two-rotor sliding vane compressor
07/21/1998US5782624 For a rotary fluid machine
07/21/1998US5782622 Hermetic compressor having a frame supporting the comprission mechanism
07/21/1998US5782610 Method of stopping scroll compressor that is driven by 3-phase DC motor
07/15/1998CN1187587A Fluid compressor
07/14/1998US5779463 Rotary piston pump having a slide valve driven by a rotor
07/14/1998US5779461 Scroll type fluid displacement apparatus having a control system of line contacts between spiral elements
07/08/1998EP0852295A1 Compressor with valve for by-pass and anti-reverse rotation control
07/08/1998EP0851980A1 Rotary vane pump
07/07/1998US5775893 Scroll compressor having an orbiting scroll with volute wraps on both sides of a plate
07/07/1998US5775888 Scroll fluid machine having end plate with greater center thickness
07/07/1998US5775882 Multicylinder rotary compressor
07/07/1998CA2105141C Orbiting member fluid displacement apparatus with rotation preventing mechanism
07/07/1998CA2072685C Motor driven fluid compressor within hermetic housing
07/01/1998EP0851126A1 Screw machine and shaft bearing lubrication
07/01/1998EP0851125A1 Rotary compressor
07/01/1998EP0851124A1 Oldham coupling mechanism of scroll-type fluid displacement apparatus
07/01/1998EP0850800A2 Fuel cell generating set including lysholm compressor
07/01/1998EP0652373B1 Rotary compressor
07/01/1998CN1186177A Noise reducing structure for hermetically sealed compressor
07/01/1998CN1186176A Rotary compressor with discharge chamber pressure relief groove
07/01/1998CN1186175A Chain compressor
07/01/1998CN1186174A Scroll machine with reverse rotation sound attenuation
06/1998
06/30/1998US5772418 Screw type compressor rotor, rotor casting core and method of manufacturing the rotor
06/30/1998US5772416 Scroll-type machine having lubricant passages
06/30/1998US5772415 Scroll machine with reverse rotation sound attenuation
06/30/1998US5772411 Gas flow and lubrication of a scroll compressor
06/25/1998WO1998027341A1 New structure of roots blower or roots vacuum pump with a multi-lobes impeller and a reverse flow unit
06/25/1998WO1998027340A1 A pair of co-operating screw rotors, a screw rotor and a rotary screw machine
06/25/1998DE19651413C1 Vane compressor for hot gas
06/24/1998EP0849471A1 High-pressure dome type compressor in which the discharge of oil by gas is prevented and in which oil is cooled by discharge gas
06/24/1998CN2284868Y New roller pump
06/24/1998CN1185823A Varialle-displacement screw-type compressor
06/24/1998CN1185542A Floatation stopping device for closed compressor
06/24/1998CN1185541A Worm compressor with height-shortened circular worm ring
06/24/1998CN1185540A Worm Comressor with small separation force between fixed and circular screw pieces
06/24/1998CN1185539A Positive displacement compressor and coating-film formation method
06/24/1998CN1185538A Vortex compressor
06/23/1998US5769617 Vane-type compressor exhibiting efficiency improvements and low fabrication cost
06/23/1998US5769612 Modular bypass system for a supercharger
06/18/1998WO1998026183A1 Improved gas actuated slide valve in a screw compressor
06/18/1998WO1998026182A1 Rotary piston pump
06/17/1998EP0848072A1 An abrasion resistant valve seat made of sintered alloy for internal combustion engines
06/17/1998CN1184895A Seal bearing for scroll type compressor
06/17/1998CN1184894A Scroll machine with reverse rotation protection
06/16/1998US5767635 Displacement machine with electronic motor synchronization
06/16/1998US5767186 Ptfe, carbon fibers, polyphenylene sulfide
06/16/1998US5765999 Scroll type fluid machine having spiral wraps formed in a step-like shape
06/16/1998US5765380 Air-conditioning apparatus using radiation heat control system and method for stable air-conditioning operation
06/16/1998CA2131181C Compressor slide valve control
06/11/1998WO1998025030A1 Hermetic compressor intended for circulating gas
06/11/1998WO1998024722A2 Method and apparatus for accurately dispensing liquids and solids
06/10/1998EP0846865A1 Suction valve device for refrigerant compressors
06/10/1998EP0846864A1 Rotary compressor with discharge chamber pressure relief groove
06/10/1998EP0846863A1 Scroll compressor
06/10/1998EP0846862A1 Scroll compressor
06/10/1998EP0771394B1 Air cooling system for scroll compressors
06/10/1998CN1184211A Convex-concave rotary wheel machine
06/10/1998CN1184210A Scroll type fluid displacement apparatus having improved mechanism for preventing movably scroll from being rotated relative to fixed scroll
06/09/1998US5762483 Scroll compressor with controlled fluid venting to back pressure chamber
06/09/1998CA2124132C Rotary compressor
06/03/1998CN2283138Y Self-priming peripheral pump
06/02/1998US5759298 Gray cast iron system for scroll machines
06/02/1998US5759021 Scroll type compressor having an annular intake groove for supplying lubricant to the rotation prevention mechanism
06/02/1998US5759020 Scroll compressor having tip seals and idler crank assemblies
06/02/1998US5758978 Thrust ball bearing
06/02/1998US5758565 Diaphragm assembly and method of manufacturing same
06/02/1998US5758501 Sliding-blade vapor engine with vortex boiler
05/1998
05/27/1998EP0844398A1 Scroll machine with reverse rotation protection
05/27/1998CN1183136A Screw-type compressor with water hammer protection
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