Patents
Sitemap › F01 - Machines or engines in general; Engine plants in general; Steam engines › F01C - Rotary-piston or oscillating-piston machines or engines › F01C 1 - Rotary-piston machines or engines
Patents for F01C 1 - Rotary-piston machines or engines (9,235)
01/1990
01/02/1990US4890992 Screw-rotor machine with an ellipse as a part of its male rotor
01/02/1990US4890990 Rotary internal combustion engine with mutually interengaging rotatable elements
01/02/1990US4890591 Rotary internal combustion engine and method of starting the engine
12/1989
12/28/1989WO1989012752A1 Rotary positive displacement compressor and refrigeration plant
12/28/1989WO1989012730A1 Scroll fluid device using flexible toothed ring synchronizer
12/27/1989CN1038332A Rotary engine
12/20/1989CN1006176B Gear pump or motor
12/20/1989CN1006166B Double-eccentric center internal axle revolving piston machinery
12/13/1989EP0345745A2 Rotary piston engine
12/13/1989EP0333883A4 Internal-combustion rotary-piston engine.
12/12/1989US4886433 Displacement machine having spiral chamber and displacement member of increasing radial widths
12/05/1989US4884537 Rotary internal combustion engine
11/1989
11/22/1989CN2048112U 2-stroke triangle rotor engine
11/16/1989DE3815122A1 Internal combustion engine
11/15/1989EP0342057A2 Scroll type fluid apparatus
11/08/1989CN1005742B Rotary fluid pressure device having free-wheeling capability
11/02/1989WO1989010489A1 Lift valve in a rotary screw machine
11/02/1989WO1989010487A1 Roller-blade hydraulic machine
11/02/1989EP0339034A1 Rotary piston machine with sealing elements.
10/1989
10/31/1989US4877385 Positive displacement rotary mechanism
10/31/1989US4877382 Scroll-type machine with axially compliant mounting
10/26/1989DE3811532A1 Rotary engine for drive and compressor
10/25/1989EP0338177A1 Rotary engine having controller and transfer gears
10/25/1989EP0257029B1 A screw-type rotary machine having at least one rotor made of a plastics material
10/25/1989CN2046546U Radiating type pin gear rotor machine
10/24/1989US4875839 Scroll member for use in a positive displacement device, and a method for manufacturing the same
10/19/1989WO1989009881A1 A method for manufacturing screw rotors
10/19/1989WO1989009874A1 Compound rotary internal combustion engine
10/18/1989EP0337950A2 Internal axis rotary piston engine
10/12/1989DE3810592A1 Geared heat engine
10/10/1989US4872818 Rotary pump having alternating pistons controlled by non-circular gears
09/1989
09/27/1989EP0334646A1 Hysteresis magnet coupling for roots type pumps
09/27/1989EP0334302A1 Prime mover with at least two variable-volume working chambers
09/27/1989EP0333883A1 Internal-combustion rotary-piston engine
09/26/1989US4869623 Method of broaching outer periphery of lobe-type rotor of roots-type fluid machine, and broaching cutter used in the method
09/26/1989CA1261762A1 Rotary fluid-handling mechanism
09/26/1989CA1259971A1 Scroll type fluid displacement apparatus with improved spiral elements
09/20/1989CN1035703A Rotary internal combustion engine
09/07/1989DE3831337A1 Method of manufacturing a machine consisting of two components in engagement with one another, in particular a displacement machine working according to the spiral principle
09/06/1989CN1035344A Wave ring-type rotary piston engine
09/05/1989US4863357 Rotary positive displacement machine for a compressible working fluid
08/1989
08/30/1989EP0330085A2 Method for manufacturing a machine composed of two interengaging elements, particularly a spiral-type compressor
08/29/1989US4861244 Spiral displacement machine with concave circular arcs sealingly engaging circular steps
08/29/1989US4860705 Positive displacement rotary mechanism
08/24/1989DE3804411A1 Centre axis rotary engine of the rotating piston type
08/16/1989CN1034790A 涡旋式压缩机 Scroll compressor
08/15/1989US4856973 Scroll-type fluid machine with specific inner curve segments
08/08/1989US4854279 Three chamber continuous combustion engine
08/02/1989EP0326101A2 Rotary piston machine
08/02/1989CN1034413A Scroll machine
08/02/1989CN1034407A Multipurpose and multifunction rotating mechanism
08/02/1989CN1034406A 旋转活塞机 Rotary piston machine
07/1989
07/27/1989DE3900375A1 Oscillating-piston engine
07/25/1989US4850831 Interengaging rotors having internal axes and specific sidewall construction
07/19/1989EP0323979A1 Rotary machine
07/18/1989US4848296 Rotary internal combustion engine
07/12/1989EP0323476A1 Rotor for a rotary screw machine.
07/11/1989US4846638 Rotary fluid machine with pivoted vanes
07/05/1989CN2040540U Rotor type internal combustion engine
07/05/1989CN1033675A High efficiency rotary steam engine
07/05/1989CN1033674A Rotary internal combustion engine
07/04/1989US4844708 Elliptical-drive oscillating compressor and pump
06/1989
06/28/1989EP0321782A1 Scroll-type displacement apparatus
06/28/1989EP0321781A1 Fluid displacement apparatus with a spiral element
06/28/1989CN2040147U Mechanically-eccentric rotating mechanism
06/27/1989US4841930 Positive displacement rotary mechanism
06/20/1989US4840550 Internal axis rotary piston engine with protrusions having two sealing corners
06/07/1989EP0318509A1 Axial bearing device.
06/06/1989US4836761 Rotary engine with a pair of piston assemblies and shuttle valves
06/06/1989US4836758 Scroll compressor with canted drive busing surface
06/06/1989CA1255187A1 Rotary motion fluid apparatus
05/1989
05/31/1989EP0318189A2 Scroll machine
05/24/1989EP0317270A2 Scroll compressor
05/24/1989EP0316346A1 Rotating piston machine.
05/23/1989US4831827 Heat transfer systems
05/11/1989DE3737125A1 Positive displacement machine
05/10/1989CN2037392U Air cooled separating cylinder rotor internal combustion engine
05/09/1989US4827800 Multi-groove and spline connection between gear shaft of a rotary piston machine with internal axis and method of making such a multigroove spline connection
05/03/1989CN1032693A Blade-wheel type rotating piston engine
05/02/1989US4825827 Shaft power generator
04/1989
04/27/1989DE3734135A1 Rotary piston with output device for planetary rotation engines
04/25/1989US4824346 Scroll type fluid displacement apparatus with balanced drive means
04/25/1989US4824345 Scroll member for scroll type fluid displacement apparatus
04/25/1989US4823758 Mechanical supercharger
04/12/1989EP0311248A2 Rotary engine
04/11/1989US4819594 Reversible rotary internal combustion engine
04/05/1989EP0310549A1 Rotary internal combustion engine
04/04/1989US4818198 Scroll fluid machine with oil feed passages
04/04/1989US4817567 Rotary piston engine
03/1989
03/29/1989EP0308827A2 Roots type rotary machine
03/29/1989CN2034987U Pollutionless special engine for vehicle
03/23/1989WO1989002517A1 Internal-combustion rotary-piston engine
03/23/1989WO1989002515A1 Gearwheel motor
03/22/1989EP0307515A1 Rotary internal combustion engine
03/22/1989EP0307417A1 Rotating piston machine.
03/21/1989US4813388 Rotary engine
03/14/1989US4812111 Variable displacement rotary fluid machine
03/14/1989EP0265521A4 Rotor of downhole screw motor, method and device for making thereof.
03/09/1989DE3827736A1 Spiral displacement machine
03/09/1989DE3728897A1 Rotary engine
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