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)
07/1991
07/30/1991US5035589 Method and apparatus for reducing scroll compressor tip leakage
07/24/1991EP0438026A2 Scroll compressor with enhanced discharge port
07/24/1991EP0438025A2 Method and apparatus for reducing scroll compressor tip leakage
07/18/1991DE4100328A1 Bearing arrangement for spiral compressor - is designed to prevent bearing overload by careful arrangement of bearing centres
07/18/1991CA2025444A1 Two-piece scroll member and method of manufacturing same
07/18/1991CA2025419A1 Multi-piece scroll members utilizing interconnecting pins and method of making same
07/17/1991EP0437165A2 Tip seal for scroll compressor
07/11/1991WO1991010045A1 Screw compressor for internal combustion engines
07/10/1991EP0436331A1 Dual flow single cell rotary compressor
07/10/1991EP0436330A1 Dual flow single cell rotary compressor
07/09/1991US5030066 Variable-delivery vane-type rotary compressor
07/03/1991EP0435815A1 Lapping of involute spiral scroll element
07/03/1991EP0435193A2 An axial flow fluid compressor and a method of assembling the same
07/03/1991CN1013048B Compressor with radial bearing for supporting drive shaft
07/03/1991CA2032787A1 Dual flow single cell rotary compressor
07/03/1991CA2030063A1 Dual flow single cell rotary compressor
07/02/1991US5028222 Fluid compressor with axial thrust balancing
06/1991
06/26/1991EP0434597A1 Magnetically actuated seal for scroll compressor
06/26/1991CN2079673U Rotor type compressor with silencer structure
06/26/1991CN2079672U Revolving fan-shaped piston type compressor
06/26/1991CN1052536A Dual-vane three-action fluid machinery
06/25/1991US5026264 Fluid compressor
06/25/1991US5026262 Multipiece eccentric shaft
06/25/1991US5026257 Variable displacement vane-type rotary compressor
06/19/1991EP0432388A1 Vane pump for the transport of pasty masses, in particular sausage mince
06/18/1991US5024590 Rotary engine of the type having a planetary rotor with rotor and shaft equal rotation
06/18/1991US5024589 Spiral displacement machine having a lubricant system
06/18/1991US5024114 Wobble drive for a translationally moving structural part
06/15/1991CA2030854A1 Vane pump for conveying pasty masses, in particular sausage meat
06/12/1991EP0432085A2 Protection for electrically driven device
06/12/1991EP0432084A1 Scroll compressor with unitary crankshaft, upper bearing and counterweight
06/12/1991EP0432083A1 Scroll compressor and method of assembly
06/11/1991US5022834 Scroll compressor with enhanced discharge port
06/05/1991EP0430854A1 Multipiece eccentric shaft
06/05/1991EP0430853A1 Slider block radial compliance mechanism
06/05/1991EP0430789A1 Rotary machine with rolling piston
06/05/1991CN1012749B Volume machine
06/04/1991US5021629 Electric plasma arc powder welded slide layer for rotary fluid pump vane
06/04/1991US5020976 Variale capacity vane compressor
06/04/1991US5020975 Variable-delivery vane-type rotary compressor
05/1991
05/29/1991EP0428729A1 Scroll type fluid handling machine
05/29/1991CA2029796A1 Rotary machine with a rolling piston
05/28/1991US5018948 Rotary displacement compressor with adjustable outlet port edge
05/28/1991US5018947 Screw type vacuum pump
05/21/1991US5017108 Scroll compressor with first and second oil pumps in series
05/21/1991US5017107 Slider block radial compliance mechanism
05/21/1991US5017097 Control valve device for variable capacity compressors
05/16/1991WO1991006777A1 Scroll compressor
05/16/1991WO1991006776A1 Scroll compressor
05/16/1991WO1991006775A1 Method of manufacturing scroll compressor
05/16/1991WO1991006774A1 Scroll compressor
05/16/1991WO1991006773A1 Scroll compressor
05/16/1991WO1991006772A1 Scroll compressor
05/16/1991WO1991006771A1 Scroll compressor
05/16/1991WO1991006770A1 Scroll compressor
05/16/1991WO1991006769A1 Scroll compressor
05/16/1991WO1991006768A1 Scroll compressor
05/16/1991WO1991006767A1 Scroll compressor
05/16/1991WO1991006766A1 Scroll compression
05/16/1991WO1991006765A1 Scroll compressor
05/16/1991WO1991006764A1 Scroll compressor
05/16/1991WO1991006763A1 Scroll compressor
05/16/1991WO1991006747A1 A rotary fluid engine
05/15/1991EP0427659A2 Slider block radial compliance mechanism
05/15/1991CN2077047U Horizontal vortex fluid mechanism
05/14/1991US5015164 Rotary compressor having long length blade
05/14/1991US5015163 Scroll type compressor with radially outer support for fixed end plate
05/14/1991US5015161 Multiple stage orbiting ring rotary compressor
05/08/1991EP0426078A1 Method of operating a volumetric pump
05/07/1991US5013227 Multistage roots pump and a method of assembling such a pump
05/07/1991US5013226 Rotating scroll machine with balance weights
05/02/1991EP0425094A2 A rotary vane compressor
05/02/1991DE4033818A1 Plastics resin relief valve for gas compressor - incorporates hollow circular contg. attached to bolt
05/01/1991CN1051080A Compressor system with demand cooling
04/1991
04/30/1991US5011389 Rotor for a rotary screw machine
04/30/1991US5011384 Slider block radial compliance mechanism for a scroll compressor
04/24/1991EP0423976A1 Compressor refrigeration system with demand cooling
04/24/1991EP0423248A1 Rotary screw compressor with oil drainage.
04/23/1991US5009583 Shaft seal and bearing members for a rotary screw compressor
04/23/1991US5009577 Rotary compressor of variable displacement type
04/18/1991WO1991004830A1 Mainrotor machining process and apparatus
04/18/1991DE4031468A1 Configuration for vane cell pump - involves method of calculating curves for housing cross=section
04/18/1991DE3933181A1 Parallel and internal axis rotary piston compressor - is mfd. using method of matching two curves of inner and outer rotors
04/17/1991EP0423056A1 Scroll compressor with dual pocket axial compliance
04/17/1991EP0422829A1 Scroll machine with reverse rotation protection
04/17/1991CN1012386B Compressor for fluids
04/16/1991US5007810 Scroll compressor with unitary crankshaft, upper bearing and counterweight
04/16/1991US5007809 Scroll compressor with dividing chamber for suction fluid
04/11/1991DE3929707A1 Bevel gear pump for pumping viscous liq. - has two meshing bevel gears driven separately by synchronised drive
04/10/1991EP0421910A1 Scroll compressor with dual pocket axial compliance
04/10/1991CN1050591A Fluid compressor
04/09/1991US5006052 Orbital rotor compressor having an inlet passage in the rotor
04/09/1991CA1282754C Scroll type fluid displacement apparatus with centrifugal force balanceweight
04/09/1991CA1282753C Variable volume ratio screw compressor with step control
04/03/1991CN2074383U Rotary-piston compressor
04/02/1991CA1282387C Scroll type fluid compressor with high strength sealing element
04/02/1991CA1282386C Scroll type compressor with displacement adjusting mechanism
03/1991
03/27/1991EP0419204A1 Orbiting member fluid displacement apparatus with rotation preventing mechanism
03/27/1991CN1012201B Scroll compressor
03/27/1991CN1012200B Scroll machine
1 ... 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 ... 195