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 15 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
Patents for F04C 15 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups (7,179)
09/1990
09/26/1990EP0323979A4 Rotary machine
09/25/1990US4958997 Two-stage gear pump with improved spur gear mounting
09/25/1990US4958994 Gear Machine for a pump or engine having bearing members with circumferential relief grooves
09/25/1990US4958992 Variable capacity swivelling vane pump
08/1990
08/21/1990US4950135 Piezoelectric powered scroll compressor
08/21/1990US4949821 Automatic transmission
08/15/1990CN1009216B Loop pump
08/09/1990DE3903195A1 Pressure testing device for pressure conduits
07/1990
07/18/1990EP0377617A1 Gearwheel motor.
07/18/1990EP0277131B1 Loop pump
07/10/1990US4940401 Lubrication fluid circulation using a piston valve pump with bi-directional flow
06/1990
06/27/1990EP0374731A2 Vane pump
06/13/1990CN1008389B Compressor
05/1990
05/30/1990EP0262189B1 High-pressure hydraulic generator-receiver for power transmission
05/23/1990EP0214164B1 Positive displacement machine, particularly pump
05/23/1990DE3908193A1 Appliance for fixing and sealing a Moineau pump (eccentric worm screw pump) in the riser of a liquid delivery probe
05/22/1990US4927343 Thrust plate for a gear pump
05/22/1990US4927332 Vane pump
05/15/1990US4925372 Fuel pump for aircraft turbine engines
05/15/1990US4924839 Rotary blowers
05/03/1990DE3935293A1 Vane-type pump assembly - has tank containing hollow plastics insert held by pressure plate against housing
04/1990
04/26/1990DE3934280A1 Radial sliding vane pump - with specified lining for rotor and rotor drive shaft
04/17/1990US4916899 Stator shaft connection through oil pump of automatic transmission
04/11/1990EP0362906A2 Internal gear pump
04/05/1990WO1990003521A1 Eccentric spiral pump
04/05/1990DE3931655A1 Pump for thermoplastic melt - is gearwheel type and feeds polymer by universal coupling drive in bore so that melt provides lubrication and prevents running dry
04/04/1990EP0361716A2 Improvements relating to gerotor pumps
04/03/1990US4913631 Turbine-driven rotary pump
03/1990
03/28/1990CN1007369B Floating shaft type gear pump-gear motor
03/20/1990US4909714 Pressure balanced external gear pump or motor of floating shaft type
03/13/1990US4907954 Multiple lobed piston pump with angularly and axially displaced segments and throttle valve
03/13/1990US4907906 Pin joint for eccentric worm pumps
03/13/1990CA1266584A1 Internal gear device with improved rotary valve
03/07/1990EP0357317A1 Electric motor
03/06/1990US4906166 Liquid coolant circulating system employing intergrated pump/accumulator
03/06/1990US4905535 Gear wheel mechanism
02/1990
02/20/1990US4902202 Variable discharge gear pump with energy recovery
02/06/1990US4898523 Gear pump with ring-type shaft retainer
01/1990
01/30/1990US4897025 Gerotor pump with extended inlet port
01/17/1990EP0350524A1 Multiple gear shift assembly for rotary vacuum pumps
12/1989
12/14/1989WO1989012167A1 Improvements relating to gerotor pumps
12/13/1989EP0345978A1 Improvements relating to gerotor pumps
12/06/1989EP0344945A2 Supercharger with torsion damping
11/1989
11/30/1989DE3915783A1 Annular-gear pump
11/29/1989EP0343166A1 Gear machine (pump or engine).
11/23/1989EP0342346A2 Gear pump
11/21/1989US4881880 Drain for internal gear hydraulic device
11/16/1989DE3815158A1 Method for reducing the pressure pulsation of a positive-displacement pump, in particular a screw pump, and a screw pump designed according to this method
11/02/1989WO1989010487A1 Roller-blade hydraulic machine
11/02/1989EP0339770A2 Ink control supply assembly for an ink jet printer
10/1989
10/31/1989US4877383 Device having a sealed control opening and an orbiting valve
10/26/1989DE3812412A1 Pump drive for fixed displacement pumps with mobile drive
10/25/1989EP0225338B1 Variable capacity pump
10/05/1989DE3809334A1 Vane-cell pump
09/1989
09/28/1989DE3807462A1 Pump combination
09/21/1989WO1989008782A1 Pump arrangement in which the pump housing constitutes the pump foundation
09/21/1989DE3816581C1 Universal shaft joint, particularly for an eccentric screw pump
08/1989
08/30/1989EP0330640A1 Turbine motor pump and rotary pump
08/22/1989US4859161 Gear pump
08/08/1989CA1258275A1 Hydraulic seals
08/08/1989CA1258274A1 Sealing member for rotating shaft and method of sealing therewith
07/1989
07/26/1989CN1034252A Pump arrangement in gear-box
07/25/1989US4850832 Oil pump for automatic transmission with effective sealing arrangement
07/25/1989US4850829 Transmission pump with improved seal
07/19/1989EP0323979A1 Rotary machine
07/12/1989EP0323834A2 Sealless pump
07/11/1989US4846641 Readily-removable floating bushing pump construction
06/1989
06/29/1989DE3842988A1 Gear pump
06/27/1989US4842500 Vane pump with positioning pins for cam ring
06/15/1989DE3840356A1 Lubricating oil pump in motor vehicles
06/13/1989US4838767 Balanced vane type oil pumps
06/13/1989US4838764 Oil pump for transaxle
06/08/1989DE3832280A1 Electrically operated fuel pump
06/06/1989US4836760 Inlet for a positive displacement pump
06/01/1989WO1989004930A1 Pump arrangement for a gearbox
05/1989
05/24/1989DE3838442A1 Pump arrangement in a transmission
05/18/1989DE3737961A1 Internal-gear pump
05/17/1989EP0315878A2 Internal gear pump
05/16/1989US4830592 Rotary gear pump or motor for fluids
05/09/1989US4827881 Engine oil pump
05/09/1989CA1253771A1 Hydraulic pump
04/1989
04/26/1989EP0199741B1 Pinion motor
04/25/1989US4823889 Downhole screw motor
04/20/1989WO1989002533A3 Rotary hydraulic machines
04/11/1989US4820139 Self-contained rotary fuel pump
04/11/1989US4820138 Gear-within-gear fuel pump and method of pressure balancing same
04/11/1989US4820134 Loop pump
04/06/1989WO1989002984A1 Gear-within-gear fuel pump and method of pressure balancing same
04/05/1989EP0310292A2 Bearing bush for a gear pump
04/04/1989US4818196 Variable capacity vane-type motor having a control channel selectively communicating with the work chamber
03/1989
03/23/1989WO1989002533A2 Rotary hydraulic machines
03/23/1989WO1989002515A1 Gearwheel motor
03/21/1989US4813856 Balanced rotary valve plate for internal gear device
03/21/1989US4813853 Internal gear pump
03/15/1989CN2034204U Suction infusion pump
03/08/1989EP0305785A2 Hydraulic motor
03/08/1989EP0235150B1 Vane cell pump
03/07/1989CA1250789A1 Low pressure lubrication system for fluid device
03/01/1989EP0304716A2 Bolt coupling for excentric srew pumps
02/1989
02/21/1989US4806085 Rotary hydraulic piston motor with fluid path in pistons for inlet pressure
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