| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 01/28/1998 | CN1171497A Member having sliding contact surface, compressor and rotary compressor |
| 01/28/1998 | CN1171496A Rotary compressor |
| 01/28/1998 | CN1171495A Compressor for refrigerator |
| 01/27/1998 | US5711659 Method of manufacturing a movable scroll element and a scroll element produced by the same method |
| 01/22/1998 | DE19629174A1 Claw pump for producing vacuum |
| 01/21/1998 | EP0819220A1 Gas flow and lubrication of a scroll compressor |
| 01/21/1998 | CN1171145A Compressor installation |
| 01/21/1998 | CN1170830A Closed compressor |
| 01/21/1998 | CN1170829A Closed rotary compressor |
| 01/20/1998 | US5709537 Evacuating apparatus |
| 01/20/1998 | CA1339633C Scroll-type fluid displacement apparatus |
| 01/14/1998 | CN2272500Y Dual-direction rotation gear oil pump |
| 01/14/1998 | CN1170089A Compressor for refrigerator |
| 01/14/1998 | CN1170088A Fluid compressor |
| 01/14/1998 | CN1170087A Scroll type compressor with improved variable displacement mechanism |
| 01/14/1998 | CN1170086A Scroll type fluid displacement apparatus in which manufacturing cost can be decreased |
| 01/14/1998 | CN1037022C Scroll-type fluid machine |
| 01/13/1998 | US5707223 Rotary screw compressor having a thrust balancing piston device and a method of operation thereof |
| 01/13/1998 | US5707210 Scroll machine with overheating protection |
| 01/07/1998 | EP0816778A2 Suction service valve |
| 01/07/1998 | EP0816685A1 Scroll-type compressor with variable displacement mechanism |
| 01/07/1998 | EP0816684A1 Scroll-type refrigerant fluid compressor |
| 01/07/1998 | EP0816682A1 Scroll-type fluid displacement apparatus with axial sealing |
| 01/07/1998 | CN1169511A Gear pump for use in electrically-operated sealed compressor |
| 01/06/1998 | US5704773 Oldham coupling mechanism of a scroll type fluid displacement apparatus |
| 01/06/1998 | US5704122 Sealed-type scroll compressor and assembling method therefor |
| 12/31/1997 | WO1997049919A1 Displacement type fluid machine |
| 12/31/1997 | WO1997049918A1 Scroll compressor |
| 12/31/1997 | CN1169126A Process for producing rotors for worm compressors |
| 12/30/1997 | US5702241 Scroll-type fluid displacement apparatus having sealing means for central portions of the wraps |
| 12/29/1997 | EP0814267A1 Rotary compressor with water injection and polyalkylene glycol lubricant |
| 12/29/1997 | EP0814266A1 Scroll-type fluid displacement apparatus |
| 12/23/1997 | US5700027 Vehicular suspension system |
| 12/23/1997 | US5699672 Refrigeration method and apparatus |
| 12/18/1997 | WO1997047888A1 Process for starting a positive-displacement machine by the spiral principle and a positive-displacement machine suitable for carrying out said process |
| 12/18/1997 | WO1997047887A1 Displacement machine on the spiral principle |
| 12/18/1997 | DE19623216A1 Verdrängermaschine nach dem Spiralprinzip Displacement after the spiral principle |
| 12/18/1997 | DE19623215A1 Verfahren zur Inbetriebnahme einer Verdrängermaschine nach dem Spiralprinzip sowie für die Durchführung dieses Verfahrens geeignete Verdrängermaschine Commission a displacement using the spiral principle and for the implementation of this method suitable displacement |
| 12/17/1997 | CN2270831Y Cam pump with special tooth form |
| 12/17/1997 | CN2270830Y Blast oxygenating pump |
| 12/16/1997 | US5697772 Screw rotor and method of generating tooth profile therefor |
| 12/10/1997 | EP0811767A1 Gear oil pump for hermetic compressor |
| 12/10/1997 | EP0811766A2 Displacement type vacuum pump |
| 12/10/1997 | EP0811123A1 Gas actuated slide valve in a screw compressor |
| 12/09/1997 | US5695327 Sealing, mounting and drive of the rotors of a dry-running screw compressor |
| 12/09/1997 | US5695326 Compressor for a refrigeration machine having a thrust bearing |
| 12/09/1997 | US5694682 Method of manufacturing valve system for capacity control of a screw compressor |
| 12/04/1997 | WO1997045642A1 Scroll compressor |
| 12/03/1997 | EP0810355A1 Vacuum pump assembly for internal combustion engines |
| 12/03/1997 | EP0730703B1 Parallel adjustment assembly for a scroll compressor |
| 12/03/1997 | EP0681657B1 Control system for screw type supercharging apparatus |
| 12/03/1997 | CN1166869A Multi-rotor helical-screw compressor |
| 12/02/1997 | US5692889 Fluid machine having screw rotors with a straight portion to be chucked |
| 12/02/1997 | US5692887 Fixed vane rotary compressor |
| 12/02/1997 | CA2019295C Scroll type fluid displacement apparatus |
| 11/27/1997 | WO1997044585A1 Spiral compressor |
| 11/27/1997 | DE19642798A1 Spiralverdichter Scroll compressor |
| 11/26/1997 | EP0809032A1 Scroll compressor with variable displacement mechanism |
| 11/26/1997 | EP0809031A1 Rotation preventing mechanism and scroll-type fluid displacement apparatus incorporating it |
| 11/26/1997 | EP0809030A1 Scroll type fluid displacement apparatus with rotation preventing means |
| 11/26/1997 | EP0808423A1 Rotary compressor with reduced lubrication sensitivity |
| 11/26/1997 | CN1165918A Refrigerating circulation or compressor with foreign matter collector |
| 11/26/1997 | CN1165917A Mfg. method for enclosed shell of sealing compressor as well as sealing compressor |
| 11/25/1997 | US5690480 Scroll compressor with cooling holes in orbiting scroll |
| 11/25/1997 | US5690475 Scroll compressor with overload protection |
| 11/20/1997 | WO1997043550A1 Plural screw positive displacement machines |
| 11/19/1997 | EP0807209A1 Protection device for a high side co-rotating scroll compressor |
| 11/19/1997 | CN2268131Y Improved Roots vaccum pump |
| 11/19/1997 | CN1165249A 油冷式螺旋压缩机 Oil-cooled screw compressor |
| 11/18/1997 | CA2121207C Speed detector of scroll-type fluid machine |
| 11/12/1997 | EP0806570A1 Scroll type fluid displacement apparatus |
| 11/12/1997 | EP0806569A2 Scroll compressor |
| 11/12/1997 | EP0805923A1 Multi-rotor helical-screw compressor |
| 11/12/1997 | EP0805743A1 Process for producing rotors for worm compressors |
| 11/12/1997 | CN2267340Y Oil transferring pump |
| 11/12/1997 | CN1164618A Positive-displacement type fluid machine |
| 11/11/1997 | US5685703 Hermetically sealed rotary compressor having an oil supply passage to the compression compartment |
| 11/11/1997 | US5685171 Cold scrubbing |
| 11/06/1997 | DE19714894A1 Non-return outlet valve for compressor |
| 11/06/1997 | DE19711448A1 Cell compressor for air conditioning in cars |
| 11/06/1997 | DE19710419A1 Vane type compressor for e.g. air conditioner used in motor vehicle |
| 11/06/1997 | DE19710418A1 Vane type compressor for e.g. air conditioner used in motor vehicle |
| 11/05/1997 | CN1163991A Scroll compressor |
| 11/05/1997 | CN1163990A Scroll fluid discharging apparatus |
| 11/04/1997 | US5683237 Horizontal type scroll compressor having inlet ports at an upper level of the casing |
| 11/04/1997 | US5683229 Hermetically sealed pump for a refrigeration system |
| 11/04/1997 | US5682793 Engaged rotor |
| 10/29/1997 | EP0803639A1 Hot gas motor and compressor unit |
| 10/29/1997 | CN1163354A Shaft structure of screw rotor for screw fluid machinery |
| 10/29/1997 | CN1036290C Engagement type rotor |
| 10/28/1997 | US5681155 Scroll type compressor having an elastic body in the driven crank mechanism |
| 10/28/1997 | US5681153 Two rotor sliding vane compressor |
| 10/21/1997 | US5678987 Rotary screw compressor with variable thrust balancing means |
| 10/21/1997 | US5678985 Scroll machine with capacity modulation |
| 10/15/1997 | EP0800622A1 Compressor installation |
| 10/14/1997 | US5676535 Enhanced rotary compressor valve port entrance |
| 10/08/1997 | CN1161415A Vortex compressor |
| 10/07/1997 | US5674063 Screw fluid machine and screw gear used in the same |
| 10/07/1997 | US5674062 Hermetic compressor with heat shield |
| 10/07/1997 | US5674061 Scroll compression having a discharge muffler chamber |