Patents
Sitemap › F01 - Machines or engines in general; Engine plants in general; Steam engines › F01C - Rotary-piston or oscillating-piston machines or engines › F01C 21 - Component parts, details, or accessories, not provided for in groups
Patents for F01C 21 - Component parts, details, or accessories, not provided for in groups (5,689)
10/1981
10/21/1981EP0038152A1 Improvements in scroll-type fluid displacement apparatus
10/14/1981EP0037658A1 Balancing means for a scroll-type fluid displacement apparatus
10/06/1981US4293290 Positive displacement rotary pump with bearings in countersunk portions of the rotors
10/06/1981US4293289 Lubricating means for rotary piston engines with pressure and temperature responsive valve means in the eccentric shaft
09/1981
09/29/1981CA1109802A1 Rotary internal combustion engine exhaust system
09/01/1981US4286555 Rotary internal combustion engine
08/1981
08/25/1981US4285643 Rotary fluid pressure device
08/18/1981US4284392 Roller pump with radial members
07/1981
07/21/1981CA1105424A1 Vertical axis hermetic rotary helical screw compressor with improved rotary bearings and oil management
07/14/1981US4278409 Compressor
07/07/1981US4277230 Gear machine operable as pump or motor with axially spaced and circumferentially offset pair of gears
06/1981
06/30/1981US4276007 Rotary pump with carbon vanes and an aluminum cylindrical sleeve in the housing
06/30/1981US4276006 System for cooling motor bearings
06/25/1981WO1981001723A1 Rotary expansible chamber apparatus with stress relief
06/23/1981US4274816 Rotary vane compressor with chamfered vane slots
06/16/1981US4273521 Drive arrangement
06/16/1981US4273515 Liquid ring pump
06/03/1981EP0029753A1 Volumetric vane machines
05/1981
05/28/1981WO1981001446A1 Vane pump
05/19/1981US4268231 Multi-unit rotary piston mechanism and mainshaft coupling therefor
05/06/1981EP0028197A1 Hydraulic rotary device
05/05/1981US4265604 Rotary pneumatic tool with valve-closing pin actuated upon overspeed
05/05/1981US4265265 Pneumatic tool governor
04/1981
04/30/1981WO1981001169A1 Rotary expansion power unit
04/14/1981US4261184 Vane guides for rotary vane gas cycle apparatus
04/08/1981EP0026747A1 Rotary-piston internal-combustion engine with three pistons and with excentrically operating rotors provided with three radially sliding vanes
04/07/1981US4260343 Vane compressor
03/1981
03/17/1981US4256443 Rotary vane-type engine throttle channels communicating between adjacent working spaces
03/10/1981US4255100 Rotary compressor with valve in rotor
03/10/1981CA1097225A1 Seal grid system for a rotary piston mechanism
03/03/1981US4253809 Vane compressor with rotor having metallic base and vane slots and a periphery of lower specific gravity
02/1981
02/11/1981EP0023529A2 Rotary piston machine of the external axis type
02/03/1981US4248575 Rotary fluid pressure biased vane compressor with pressure release means
01/1981
01/28/1981EP0022781A1 Gear machine.
01/27/1981US4247268 Rotary vane machine with radial vane constraining members
01/27/1981US4247263 Pump assembly incorporating vane pump and impeller
01/07/1981EP0022103A1 A rotary vane machine
01/06/1981US4243006 Rotary engine with lateral pistons
12/1980
12/30/1980US4242591 Orbitally rotating piston engine
12/30/1980US4242068 Vane pump with bypass for leakage of fluid when bottom of vane is connected to undervane suction port
12/30/1980US4242065 Sliding vane compressor with end face inserts or rotor
12/30/1980US4241713 Rotary internal combustion engine
12/16/1980US4239027 Rotary internal stage combustion engine
11/1980
11/26/1980EP0019605A1 A rotary vane machine
11/11/1980CA1089369A1 Side port - rc engine
11/04/1980US4231728 Rotary vane pump
10/1980
10/28/1980US4230088 Rotary internal combustion engine with integrated supercharging
10/21/1980US4229151 Side port - RC engine
10/21/1980US4229147 Rotary positive-displacement pump
10/14/1980US4227755 Bearing arrangement for shaft of rotary compressor
09/1980
09/30/1980US4225308 Pneumatic laminar motor for dental use
09/30/1980US4225295 Gas seal means for rotary piston engines
09/30/1980US4225294 Oil seal means for rotary piston engines including a nitrided and ground surface
09/16/1980US4222691 Method for machining the screw of a compression or expansion machine and a device for the application of said method
09/09/1980US4221553 Oribital pump with fluid flow control
09/02/1980CA1084775A1 Hydraulic device
08/1980
08/19/1980US4218200 Rotor cooling means for rotary piston engines
08/05/1980US4215534 Cooling system for an expander engine
07/1980
07/22/1980CA1081979A1 Integrated multi-unit refrigeration motor-compressor assembly
07/15/1980US4212603 Rotary vane machine with cam follower retaining means
07/08/1980CA1081190A1 Rotary fluid pump or compressor
07/01/1980CA1080544A1 Pump assembly incorporating vane pump and impeller pump
06/1980
06/25/1980EP0012615A1 Improvements in scroll type fluid compressor units
06/25/1980EP0012544A1 Liquid ring pump
06/24/1980US4209287 Rotary vane compressor with start-up pressure biasing vanes
06/24/1980US4209286 Self lubricating vane for a rotary vane cooling system
06/10/1980US4207039 Seal grid system for a rotary piston mechanism
06/03/1980CA1078743A1 Two-piece rotor for wankel engines
04/1980
04/15/1980US4198195 Rotary fluid pump or compressor
04/03/1980WO1980000591A1 Gear machine
03/1980
03/18/1980CA1073741A1 Fluid-cooled, scroll-type, positive fluid displacement apparatus
03/05/1980EP0008531A1 Rotary machine
03/04/1980CA1073023A1 Scroll-type apparatus with hydrodynamic thrust bearing
03/04/1980CA1072928A1 Rotary vane compressor with vane extension means of improved design
03/04/1980CA1072818A1 Rotor for hydraulic pump or motor
02/1980
02/12/1980CA1071597A1 Rotary vane compressor with improved vane extension means
02/05/1980US4187063 Air motor with discharge through gear chamber and silencer
02/05/1980CA1071024A1 Power transmission
01/1980
01/29/1980US4185949 Screw compressor with bearing unloading means
01/22/1980US4184821 High velocity rotary vane cooling system
01/01/1980US4181480 Rotary blade hydraulic motor with fluid bearing
01/01/1980US4181479 Balanced gerotor device with eccentric drive
01/01/1980US4181474 Vertical axis hermetic rotary helical screw compressor with improved rotary bearings and oil management
11/1979
11/20/1979US4174931 Vane for rotary compressor
11/13/1979US4174197 Rotary-piston machine having a liquid-cooled piston
10/1979
10/30/1979CA1065257A1 Rotary engine with inserts in rotor faces
10/23/1979US4171938 Fluid pressure operated pump or motor
08/1979
08/22/1979EP0003676A1 Helical gear pumps, compressors or motors
08/21/1979CA1060856A1 Plastic material pumping and dispensing
08/14/1979CA1060348A1 Rotary piston engine
08/07/1979US4163635 Vane type rotary fluid pumps or compressors
07/1979
07/10/1979CA1058087A1 Rotary engine with tongue and groove inserts in rotor faces
06/1979
06/19/1979US4158531 Rotary engine with an oscillation damping layer
05/1979
05/29/1979CA1055311A1 Rotary machine
05/08/1979US4153395 Compressors
05/08/1979CA1054114A1 Rotary compressor
05/01/1979CA1053508A1 Vanes for fluid power converter
04/1979
04/17/1979US4149835 Temperature responsive seal lubrication for rotary mechanisms
04/17/1979US4149834 Delivery valve, especially for rotary piston compressors
03/1979
03/27/1979CA1051266A1 Rotary fluid displacement device
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