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)
09/1981
09/15/1981CA1109037A1 Scroll-type compressor units
09/01/1981US4286933 Rotary vane pump with pairs of end inlet or outlet ports
08/1981
08/26/1981EP0034524A2 Rotary compressor
08/04/1981US4281975 Anti-friction slide valve support for screw compressor
07/1981
07/21/1981CA1105424A1 Vertical axis hermetic rotary helical screw compressor with improved rotary bearings and oil management
07/14/1981US4278409 Compressor
06/1981
06/30/1981US4276007 Rotary pump with carbon vanes and an aluminum cylindrical sleeve in the housing
06/30/1981US4275689 Internal combustion engine
06/24/1981EP0030619A1 Rotor compressor, especially screw rotor compressor, with lubricant supply to and drainage thereof from the bearings
06/23/1981US4274816 Rotary vane compressor with chamfered vane slots
06/23/1981US4274814 Rotative machine for fluids
06/17/1981EP0030275A1 Compressor, especially screw compressor with lubrication circuit
06/09/1981CA1102622A1 Sealing system for a rotary machine
06/02/1981CA1102179A1 Rotative machine for fluids
04/1981
04/14/1981US4261691 Rotary screw machine with two intermeshing gate rotors and two independently controlled gate regulating valves
03/1981
03/31/1981US4259043 Thrust bearing/coupling component for orbiting scroll-type machinery and scroll-type machinery incorporating the same
03/24/1981US4257753 Rotary fluid vane pump with means preventing axial displacement of the drive shaft
03/10/1981US4255100 Rotary compressor with valve in rotor
03/10/1981CA1097286A1 Scroll-type apparatus with fixed throw crank drive mechanism
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
02/24/1981US4252511 Rotary compressor or motor with rotors having interengaging blades and recesses
02/18/1981EP0024006A1 Rotary piston ventilator
02/05/1981WO1981000278A1 Compressor for internal combustion engines
01/1981
01/28/1981EP0022782A1 Gear machine.
01/28/1981EP0022781A1 Gear machine.
01/27/1981US4247268 Rotary vane machine with radial vane constraining members
01/07/1981EP0022103A1 A rotary vane machine
12/1980
12/30/1980US4242065 Sliding vane compressor with end face inserts or rotor
12/30/1980CA1092571A1 Rotary piston compressor
12/16/1980US4239467 Rotary compressor with valved liquid injection through the rotor
12/09/1980CA1091091A1 Rotary engine or pump construction
12/02/1980US4236589 Vacuum motor
11/1980
11/26/1980EP0019605A1 A rotary vane machine
11/25/1980US4235572 Rotary displacement pump with intake through a first sealing slide
11/18/1980US4234296 Screw compressor
11/04/1980US4231727 Vacuum producing rotary vane pump with shaft lubrication
10/1980
10/21/1980US4229147 Rotary positive-displacement pump
10/14/1980US4227869 Intermeshing pump rotor gears with involute and linear flank portions
10/14/1980US4227867 Globoid-worm compressor with single piece housing
10/14/1980US4227755 Bearing arrangement for shaft of rotary compressor
10/14/1980CA1087646A1 Sealing member for orbital or rotary motors
10/01/1980EP0016532A1 Scroll-type fluid compressor unit
09/1980
09/23/1980US4224016 Rotary positive displacement machines
09/23/1980US4224014 Rotary compressor with liquid injection
09/23/1980CA1086277A1 Pair of rotors for a rotary piston pump
09/18/1980WO1980001935A1 Rotary-piston machine
09/16/1980US4222715 Device for delivery control in a rotary piston compressor
09/16/1980US4222691 Method for machining the screw of a compression or expansion machine and a device for the application of said method
09/09/1980USRE30400 Globoid-worm compressors
09/09/1980US4221553 Oribital pump with fluid flow control
09/09/1980CA1085126A1 Multi-shaft screw extruder
08/1980
08/26/1980US4219315 Sealing member for orbital or rotary motors
08/19/1980US4218199 Rotary piston compressor with no negative torque
08/12/1980US4216661 Scroll compressor with means for end plate bias and cooled gas return to sealed compressor spaces
08/05/1980US4215977 Pulse-free blower
07/1980
07/15/1980US4212603 Rotary vane machine with cam follower retaining means
07/08/1980US4211522 Oil-injected rotary compressors
07/08/1980CA1081190A1 Rotary fluid pump or compressor
06/1980
06/25/1980EP0012616A1 Scroll-type fluid compressor unit
06/25/1980EP0012615A1 Improvements in scroll type fluid compressor units
06/25/1980EP0012614A1 Improvements in scroll type fluid compressor units
06/10/1980US4207039 Seal grid system for a rotary piston mechanism
05/1980
05/20/1980CA1077780A1 Method for sealing off in the radial direction a volume of fluid bound between a stator and a rotor and an arrangement for carrying out said method
05/14/1980EP0010930A1 Scroll-type fluid compressor units
05/06/1980US4201526 Pivoted blade between rotor and stator having arcuate sections
04/1980
04/30/1980EP0010402A1 Improvements in scroll-type compressor units
04/22/1980US4199308 Axial compliance/sealing means for improved radial sealing for scroll apparatus and scroll apparatus incorporating the same
04/16/1980EP0009916A1 Rotary positive displacement machines
04/16/1980EP0009915A1 Rotary positive displacement machines
04/15/1980US4198195 Rotary fluid pump or compressor
04/15/1980US4197719 Tri-level multi-cylinder reciprocating compressor heat pump system
04/08/1980US4196595 Integrated thermal solar heat pump system
04/03/1980WO1980000592A1 Gear machine
04/03/1980WO1980000591A1 Gear machine
04/02/1980EP0009355A1 Scroll-type fluid compressor units
04/02/1980EP0009350A1 Scroll-type fluid compressor units
04/01/1980CA1074751A2 Screw rotor machine
04/01/1980CA1074750A1 Rotary screw compressor and method of operation
03/1980
03/18/1980US4193749 Screw blower
03/18/1980CA1073741A1 Fluid-cooled, scroll-type, positive fluid displacement apparatus
03/05/1980EP0008531A1 Rotary machine
03/04/1980US4191515 Sealing system for a 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
02/1980
02/26/1980CA1072366A1 Two-speed drive apparatus
02/12/1980CA1071597A1 Rotary vane compressor with improved vane extension means
02/05/1980CA1071024A1 Power transmission
01/1980
01/29/1980US4185949 Screw compressor with bearing unloading means
01/29/1980US4185465 Multi-step regenerated organic fluid helical screw expander hermetic induction generator system
01/22/1980CA1070133A1 Coupling member for orbiting machinery
01/01/1980US4181474 Vertical axis hermetic rotary helical screw compressor with improved rotary bearings and oil management
01/01/1980US4180986 Refrigeration system on/off cycle
11/1979
11/20/1979CA1066678A1 Rotary compressor
11/14/1979EP0005327A1 Gear train for driving a screw compressor with means for speed variation
11/13/1979US4174196 Screw fluid machine
11/06/1979US4173440 Method and device for lubricating compressors
10/1979
10/17/1979EP0004609A2 Screw compressor-expander cryogenic system
09/1979
09/18/1979CA1062543A1 Endless belt pump
08/1979
08/22/1979EP0003572A1 Sliding vane pump
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