Patents
Sitemap › F04 - Positive-displacement machines for liquids; Pumps for liquids or elastic fluids › F04B - Positive-displacement machines for liquids; Pumps › F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
Patents for F04B 1 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders (10,723)
12/1989
12/27/1989CN2050094U End face port plate for axial plunger pump or motor
12/20/1989EP0288481B1 Radial piston pump
12/20/1989EP0099372B1 Hydraulic radial piston machines
12/14/1989DE3820632A1 Piston compressor
12/13/1989CN1006081B Variable hydraulic machinery and hydraulic transmission of stepless variable drive
12/05/1989US4884902 Roller bearing executing swivel motions with device for the synchronous guidance of the bearing cage
11/1989
11/30/1989WO1989011593A1 Main bearing device for motor of bent axis type axial piston pump
11/30/1989DE3915781A1 Radial-piston pump
11/29/1989EP0343163A1 High pressure cleaning apparatus with a wobble plate piston pump.
11/22/1989CN2048119U Hand-pump in hydraulic starting system
11/21/1989US4881877 Radial piston pump
11/16/1989DE3901856A1 Hydraulically driven high-pressure cleaner
11/15/1989EP0341390A2 Piston device for a piston unit
11/14/1989US4880360 Variable displacement compressor with biased inclined member
11/09/1989DE3814077A1 Hydrostatic machine for connection to a line with impressed pressure
11/08/1989CN1005742B Rotary fluid pressure device having free-wheeling capability
11/02/1989WO1989010468A1 Piston machine
11/02/1989EP0339897A1 Slant plate type compressor with variable displacement mechanism
11/01/1989CN1036812A Positive displacement pump or motor utilizing self-lubricated bearing
10/1989
10/25/1989EP0338247A2 Variable displacement hydraulic servomotor system
10/25/1989CN2046553U Point-contart internal drainage hydraulic starting dynamo
10/24/1989US4875403 Variable displacement port plate
10/18/1989EP0337439A2 Fixed cylinder type radial piston pump with volume control apparatus
10/17/1989US4874297 Radial pump
10/12/1989DE3910072A1 Hydraulic motor for the drive wheel of means of transport
10/10/1989US4872394 Bent axis type axial piston pump or motor
10/04/1989EP0335535A1 Positive displacement pumps
09/1989
09/27/1989EP0334276A2 Radial piston pump
09/26/1989CA1260760A1 Oil pump
09/20/1989CN2044652U Wing-type water pump
09/14/1989DE3806962A1 Rotary engine
09/12/1989US4865524 Variable capacity compressor
09/05/1989US4862789 Positive displacement pump or motor utilizing a self-lubricated bearing
08/1989
08/30/1989CN2043675U Axial plunger-type high-pressure water pump made of water lubricating material
08/30/1989CN1035164A Refrigerant compressor
08/29/1989US4861234 Low-noise pump assembly
08/24/1989DE3804424C1 Piston for axial-piston machines
08/24/1989DE3803944A1 Hydraulic axial-piston machine
08/23/1989EP0329208A2 Hydraulically driven high-pressure cleaner
08/23/1989CN1034979A Refrigerant compressor
08/23/1989CN1034978A Refrigerant compressor
08/22/1989US4858480 Swash plate swivel bearing for a hydraulic axial piston machine
08/17/1989DE3803735A1 Eccentric pump, especially a fuel injection pump
08/15/1989US4856917 Device for the synchronous guidance of a roller bearing cage for a roller bearing executing swivel motion
08/09/1989EP0327012A2 Variable speed pressure energy translating device with an arcuate reinforced polymer bearing
08/08/1989US4854826 Assembly of a primary power source and several axial piston pumps flanged on it
08/02/1989EP0325584A1 A fluid motor.
08/01/1989US4852463 Axial piston machines whose pistons are formed as stepped pistons
07/1989
07/27/1989WO1989006751A1 Piston pump for a high-pressure cleaning appliance
07/27/1989WO1989006750A1 Hydrostatic axial piston engine, in particular for a motor vehicle gearbox with power split
07/27/1989DE3901064A1 Hydrostatic axial-piston machine, in particular for a motor vehicle split-torque transmission
07/27/1989DE3800905A1 Pump, in particular axial-piston pump
07/26/1989EP0324868A1 Piston pump for a high pressure cleaning apparatus
07/25/1989US4850828 Plunger pump of quick pressure-rise type
07/25/1989US4850825 Radial piston pump
07/25/1989US4850812 Integrated motor pump combination
07/20/1989DE3800031A1 Axial piston machine developing torque on the cam plate
07/20/1989DE3734514A1 Reciprocating pump
07/19/1989EP0324112A2 Adjusting device for a setting bolt
07/13/1989DE3743574A1 Radial-piston pump
07/12/1989EP0323633A1 A power train for vehicles
07/06/1989DE3840428A1 Radial-piston pump
07/04/1989US4843950 Adjustable axial piston machines
06/1989
06/28/1989CN2040169U Piston pump with a radial rotor
06/26/1989EP0325584A4 A fluid motor.
06/22/1989DE3740672A1 Device for delivery rate control of a valve-controlled multipiston pump
06/21/1989EP0320822A1 Axial piston pump
06/20/1989US4840548 High pressure plunger pump
06/20/1989US4840544 Hydraulic pump assembly associated with accumulator
06/15/1989WO1989005405A1 Oil hydraulic pump
06/13/1989US4838765 Axial piston pump
06/06/1989US4836693 Intermittently assisted hydrostatic bearing
05/1989
05/24/1989CN2038159U Power-driven hand-handle-type micropipet
05/23/1989CA1254523A1 Slant plate type hydraulic device
05/23/1989CA1254443A1 Reciprocating pump
05/18/1989DE3737389A1 Swash-plate pivot bearing for a hydraulic axial-piston machine
05/18/1989DE3737388A1 Swivel bearing, particularly for the swash plate of a hydraulic axial-piston machine
05/16/1989CA1254078A1 Apparatus for delivering portions of a pasty substance
05/09/1989US4827833 Adjustable axial piston pump having a bearing pressure pocket located on one side of a rocker body
05/02/1989US4825753 Cam plate type axial piston pump
04/1989
04/26/1989EP0204835B1 Hydraulic swashplate unit with unitary bearing retainer
04/25/1989US4824338 Pump arrangement which includes axially extending cylindrical ring noses on coned rings with a centering ring and seal ring radially of the face wherein two of the ring nose are oppositionally directed and laid together
04/20/1989DE3833560A1 Pump arrangement
04/20/1989DE3833558A1 Radial piston pump
04/19/1989CN2036215U Low-temp. one-way oil-distributing axial plunger pump
04/18/1989US4822255 Pump for pressures exceeding one thousand atmospheres by the provision of a half-pressure chamber around a high pressure chamber between coned ring elements
04/18/1989US4821936 Hydraulic index drive system
04/05/1989EP0203071B1 Hydrostatic diagonal piston pump or diagonal piston engine
04/05/1989CN1032222A Rotary piston and barrel machine with fixed centering toggle type joint
03/1989
03/29/1989EP0308508A1 Variable-capacity piston machine
03/29/1989CN2035002U Axial sliding-vane compressor
03/28/1989US4815327 Rotary barrel machine with pistons and fixed centering pivot
03/28/1989US4815289 Variable pressure control
03/23/1989WO1989002532A1 Axial piston pump
03/23/1989DE3726957A1 Radial piston machine
03/22/1989EP0307969A2 Static hydraulic pressure type continuously variable transmission
03/22/1989EP0307637A1 Valve control for an internal-combustion engine by means of an offset-driven rotary-piston pump
03/21/1989US4813340 Rotary fluid energy translating device
03/16/1989DE3829698A1 Piston pump, in particular radial piston pump
03/15/1989CN1031744A Linearly-adjusted and non-circular gear driven advection pump
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