| Patents for F04C 18 - Rotary-piston pumps specially adapted for elastic fluids (19,462) |
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| 07/04/2000 | US6082985 Screw compressor |
| 07/04/2000 | US6082981 Oil separator for compressor, scroll compressor using same, and method of manufacturing oil separator for compressor |
| 07/04/2000 | US6082132 Apparatus having refrigeration cycle |
| 06/29/2000 | DE19957024A1 Multistep root pump for pumping plant, has two pairs of rotors which are individually provided in corresponding pump chambers and sequentially rotate in longitudinal direction |
| 06/27/2000 | US6079967 Fluid compressor |
| 06/27/2000 | US6079965 Cylinder, for a rolling piston compressor |
| 06/27/2000 | US6079963 Displacement type compressor and method of forming coating film |
| 06/22/2000 | WO2000036303A1 Vane type vacuum pump for automobiles |
| 06/21/2000 | EP1010893A2 Compressor with lubricating oil control |
| 06/21/2000 | EP1010892A1 Scroll compressor |
| 06/21/2000 | EP1009590A2 Ergonomically friendly random orbital sander construction |
| 06/21/2000 | CN1257163A Vortex compressor |
| 06/20/2000 | US6077060 Scroll-type fluid machine including float-protecting pin having partially-cut head |
| 06/20/2000 | US6077058 Rotary compressor |
| 06/20/2000 | US6077045 Scroll-type compressor and operation method therefor |
| 06/15/2000 | WO2000034661A1 Method for modifying the volume of working chambers in positive-displacement machines |
| 06/15/2000 | WO2000034660A1 Scroll type fluid machinery |
| 06/15/2000 | CA2320299A1 Scroll type fluid machinery |
| 06/14/2000 | EP1008755A1 Screw machine |
| 06/14/2000 | EP1007853A1 Oil-free screw rotor apparatus |
| 06/14/2000 | EP1007851A1 A pair of co-operating screw rotors, a screw rotor and a rotary screw machine |
| 06/14/2000 | EP1007850A1 Rotary pump with hydraulic vane actuation |
| 06/14/2000 | CN1256744A Vacuum pump rotor and method of manufacturing the same |
| 06/14/2000 | CN1256743A Improved tip seal for scroll-type vacuum pump |
| 06/14/2000 | CN1256365A Gap distribution for reducing leakage area |
| 06/14/2000 | CN1256364A Vortex fluid machinery |
| 06/13/2000 | US6074186 Lubrication systems for scroll compressors |
| 06/13/2000 | US6074185 Scroll compressor with improved tip seal |
| 06/13/2000 | US6074141 Scroll compressor having grooves for seal members |
| 06/08/2000 | DE19955262A1 Multi-axle gas compression pump arrangement has parallel shafts with drive rotor and with driven rotor, connected via drive belt to transmit rotary movement |
| 06/08/2000 | DE19953690A1 Fuel cell system has movable spirals of compressor and regenerator symmetrically coupled to opposite ends of motor shaft |
| 06/07/2000 | EP1006281A1 Multi-stage roots pump |
| 06/07/2000 | EP0993554A4 Improvements to impeller pumps |
| 06/07/2000 | CN1053266C Rotative vacuum pump |
| 06/06/2000 | US6071103 Member having sliding contact surface, compressor and rotary compressor |
| 06/06/2000 | US6071101 Scroll-type fluid displacement device having flow diverter, multiple tip seal and semi-radial compliant mechanism |
| 06/06/2000 | US6071100 Scroll compressor having lubrication of the rotation preventing member |
| 06/06/2000 | US6071099 Scroll compressor having a discharge muffler |
| 05/31/2000 | EP1004773A1 Multi-stage capacity control scroll compressor |
| 05/31/2000 | EP1003974A4 Cascaded progressing cavity pump system |
| 05/31/2000 | EP1003974A2 Cascaded progressing cavity pump system |
| 05/31/2000 | EP0742869B1 Scroll-type fluid displacement device having high built-in volume ratio and semi-compliant biasing mechanism |
| 05/31/2000 | CN1254801A Vortex compressor |
| 05/30/2000 | US6068459 Tip seal for scroll-type vacuum pump |
| 05/30/2000 | US6068458 Scroll-type fluid displacement apparatus |
| 05/25/2000 | DE19955291A1 Fuel cell system with common spiral compressor, spiral generator has movable spirals in one piece with common base plate with spiral walls on opposite sides engaged with static spirals |
| 05/24/2000 | EP1002953A1 Scroll compressor |
| 05/24/2000 | CN1254080A 空调器 Air Conditioner |
| 05/18/2000 | DE19953158A1 Rotation equalizing mechanism for compressor spiral, with leveling weights fitted to traveling crankshafts |
| 05/17/2000 | EP1001173A1 Screw compressor with adjustable full-load capacity |
| 05/17/2000 | CN1253239A Oilless lubricating screw type compressor |
| 05/17/2000 | CN1052535C Cooling system |
| 05/16/2000 | US6062834 Scroll compressor |
| 05/16/2000 | US6062833 Spiral compressor, useful in particular to generate compressed air for rail vehicles |
| 05/16/2000 | US6062832 Scroll compressor and method for manufacturing an oldham ring therefor |
| 05/16/2000 | US6062827 Rotary pump |
| 05/11/2000 | DE19953153A1 Spiral fluid compressor has fluid outlet aperture to which fluid is transmitted by spiral transmission mechanism and flap valve with support section fixed to compressor |
| 05/11/2000 | DE19952902A1 Electrically-operated fluid pump has common cooling circuit used for cooling pump unit, intermediate drive transmission, electric motor and current regulator |
| 05/11/2000 | DE19952296A1 Fluid roller machine has fixed component with housing and two fixed roller components mounted at both ends of housing and centered on an axis of housing |
| 05/11/2000 | DE19850753A1 Rotary piston compressor in hypotrochoidal format has driven outer runner and inner runner meshing with it, inner runner being located on stationary eccentric, on axis of which outer runner side plates are located |
| 05/11/2000 | DE19850752A1 Rotary piston compressor in hypotrochoidal format has outer runner meshing with inner running slidingly located on eccentric whose eccentric axis is eccentrically arranged by defined value to rotary axis of outer runner |
| 05/09/2000 | US6059551 Oil injected screw compressor with thrust force reducing means |
| 05/09/2000 | US6059550 Twin-cylinder impeller pump |
| 05/09/2000 | US6059549 High-low pressure chamber sealing arrangement of a volute compressor |
| 05/09/2000 | US6059540 Lubrication means for a scroll-type fluid displacement apparatus |
| 05/04/2000 | WO2000025004A1 Twin helical rotors for installation in displacement machines for compressible media |
| 05/03/2000 | EP0997645A1 Scroll type fluid machine |
| 05/03/2000 | EP0996824A1 Single-source gas actuation for screw compressor slide valve assembly |
| 05/02/2000 | US6056525 Vane compressor |
| 05/02/2000 | US6056524 Scroll compressor assembly |
| 05/02/2000 | US6056523 Scroll-type compressor having securing blocks and multiple discharge ports |
| 05/02/2000 | US6055967 Screw supercharger for vehicle |
| 05/02/2000 | US6055827 Comprising a compressing section sucking and compressing a refrigerant comprising at least one member selected from the group consisting of hydrofluorocarbon-based refrigerants, and a plain bearing slidably supporting a driving shaft |
| 05/02/2000 | CA2117297C Water ring type vacuum pump |
| 04/27/2000 | DE19849234A1 Rotary piston compressor for gas compression has radial compression spaces defined between cooperating toothed inner and outer rotors supplied via hollow shaft acting as axial suction chamber |
| 04/27/2000 | DE19849098A1 Excentric screw pump for gases as vacuum pump uses one-turn inner rotor rotating without contact inside housing rotor within scoop space. |
| 04/26/2000 | EP0995879A1 Twin feed screw rotors |
| 04/26/2000 | EP0805743B1 Process for producing rotors for worm compressors |
| 04/26/2000 | CN1251639A Horizontal type scroll compressor |
| 04/26/2000 | CN1251410A Vortex type fluid discharging apparatus |
| 04/25/2000 | US6053716 Vane for a rotary compressor |
| 04/25/2000 | US6053715 Scroll type compressor |
| 04/20/2000 | WO2000022302A1 Scroll-type fluid displacement device for vacuum pump application |
| 04/20/2000 | DE19845993A1 Schraubenverdichter Screw compressor |
| 04/19/2000 | EP0994258A1 Scroll fluid machine |
| 04/19/2000 | EP0993554A1 Improvements to impeller pumps |
| 04/18/2000 | US6050797 Screw compressor with balanced thrust |
| 04/18/2000 | US6050793 Scroll type fluid displacement machine |
| 04/18/2000 | US6050792 Multi-stage scroll compressor |
| 04/18/2000 | US6050784 Compressor having capacity-controlling mechanism with abrasion-free cylinder |
| 04/13/2000 | WO2000020761A1 Screw-type compressor |
| 04/13/2000 | DE19948965A1 Compressor for compressing fluid incorporates thrust bearing device supporting movable component allowed to circulate orbitally and accommodating thrust force, a component of compression counterforce |
| 04/12/2000 | EP0992691A1 Scroll compressor |
| 04/12/2000 | EP0992690A1 Scroll Compressor |
| 04/12/2000 | EP0992689A1 Compressor |
| 04/12/2000 | CN1250136A Energy-saving single-bolt compressor |
| 04/11/2000 | US6047557 Adaptive control for a refrigeration system using pulse width modulated duty cycle scroll compressor |
| 04/06/2000 | WO2000019104A1 Vacuum pump |
| 04/06/2000 | WO2000019103A1 Lift valve for a rotary screw compressor |
| 04/06/2000 | DE19947132A1 Spiral fluid displacement pump/compressor has sealing groove with sealing element between housing and spiral element |