Patents
Sitemap › F15 - Fluid-pressure actuators; Hydraulics or pneumatics in general › F15B - Systems acting by means of fluids in general; Fluid-pressure actuators, e.g. servomotors; Details of fluid-pressure systems, not otherwise provided for › F15B 21 - Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
Patents for F15B 21 - Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass (10,959)
10/1984
10/16/1984CA1176137A1 Multiple pump system with horsepower limiting control
10/09/1984US4475333 Devices for limiting the power output of a hydraulic assembly
09/1984
09/18/1984CA1174752A1 Safety device at remote control of hydraulic or pneumatic machine tools
09/12/1984EP0118344A1 Digital powerdrive
09/04/1984US4469594 High pressure hydraulic system and self-cleaning filter assembly therefor
08/1984
08/21/1984US4466459 Pneumatic timer with spiral throttle
08/15/1984EP0115908A2 Transducer
08/14/1984US4465090 In an oscillating valve
08/14/1984CA1172547A1 Viscosity compensating circuits
08/10/1984EP0093150A4 Digital drive control of compensated valves.
08/08/1984EP0115337A2 Method and device for controlling the speed of a pneumatic drive unit
07/1984
07/31/1984US4462418 Unitized pneumatic cycling and timing system
07/10/1984CA1170749A1 Electrohydraulic regulating drive
06/1984
06/27/1984EP0111637A1 System for sensing and controlling the speed of a pistion in a cylinder
06/26/1984US4456170 For heating a pressure medium
06/26/1984US4456168 Modular fluid control apparatus and method of making
06/05/1984CA1168575A1 Automatic reset pneumatic timer
05/1984
05/15/1984CA1167348A1 Maneuvering portion structure of an excavation work vehicle
05/08/1984US4447161 Pneumatic timer
05/08/1984US4446697 Hydraulic fan drive system including variable displacement pump
04/1984
04/17/1984US4442755 Power stage servo valve for a seismic vibrator
04/10/1984US4442008 Process for purifying the active liquid within hydraulic control circuits
04/10/1984US4441523 Sequencing valve
04/04/1984EP0104613A2 Power transmission
04/04/1984EP0104556A1 Switching device for a cooler for hydraulic fluids
03/1984
03/14/1984EP0102519A1 Paving stone or brick splitting device
03/13/1984US4436434 Pneumatic timer
02/1984
02/16/1984WO1984000606A1 Volumetric control device for fluids
02/08/1984EP0100249A1 Electropneumatic device; delayed gas pulse generator
02/01/1984EP0099487A1 Assembly consisting of three components for an air-pressure lubrification system
01/1984
01/17/1984US4426194 Viscosity compensating circuits
01/10/1984US4424673 Hydraulic supply system of a pulsatory press
01/04/1984EP0097275A1 Method of operating a hydrostatic or pneumatic drive, as well as a drive
12/1983
12/28/1983EP0097007A2 A hydraulic control system
12/20/1983US4421471 Vibrating hydraulic press
11/1983
11/22/1983US4416187 On-off valve fluid governed servosystem
11/09/1983EP0093150A1 Digital drive control of compensated valves
10/1983
10/26/1983EP0092123A2 Failure prediction system suitable for use in hydraulic system
10/19/1983EP0091801A2 Energy recovery system for manipulator apparatus
10/18/1983US4410100 Breather separator for fluid power system reservoir
10/11/1983US4409166 From ceramic material, with piston and mold apparatus
09/1983
09/29/1983WO1983003315A1 Method and device for controlling a magnitude and application thereof
09/28/1983EP0089881A2 Compressed air economising device
09/28/1983EP0089446A1 Cover with valves of flux counterpressure and regulation for hydraulic circuits in general
09/27/1983US4406307 Directional valve with spool transfer loop
08/1983
08/09/1983CA1151679A1 Device for breaking a hard material
08/02/1983US4396206 Vehicle leveling system
08/02/1983CA1151073A1 Fluidic oscillator with resonant inertance and dynamic compliance circuit
07/1983
07/27/1983EP0016009B1 Hydraulic fan drive system
07/21/1983WO1983002483A1 Container handler with programmed electro-hydraulic control circuit
07/20/1983EP0083833A2 Pneumatic timer
07/19/1983CA1150137A1 Hydraulic control system for controlling level of cultivators, chisel plows and like machines
07/12/1983US4392584 Vent cap for a container accommodating hydraulic fluids
06/1983
06/15/1983EP0081340A1 Determining the level of contaminants in a hydraulic system
06/15/1983EP0020563B1 Motor-valve apparatus for hydraulic fan drive system
05/1983
05/31/1983US4385909 De-aerator for hydraulic power units
05/11/1983WO1983001662A1 Digital drive control of compensated valves
05/03/1983US4381731 Hydraulic power system for a plurality of operating units in a poultry of livestock confinement house
05/03/1983US4381699 Hydraulic control system
04/1983
04/26/1983CA1145226A1 Closed center programmed valve system with load sense
04/13/1983EP0076485A1 Control system for hydraulic circuit apparatus
03/1983
03/30/1983EP0075507A1 Electrohydraulic servo valve device
03/29/1983CA1143628A1 Bypass valve
03/22/1983CA1143303A1 Work vehicle
03/16/1983EP0074254A1 Hydraulic control valve
03/08/1983US4375747 Control system for pressure-driven loads
03/08/1983CA1142414A2 Hydraulic control apparatus for controlling the operation of mine roof support props
02/1983
02/09/1983EP0071228A2 Control system for hydraulic circuit apparatus
02/08/1983US4372849 Hydraulic pumping and switching apparatus
12/1982
12/14/1982US4363451 Device for breaking a hard material
12/14/1982US4363356 Hydraulic fluid cooling system
11/1982
11/30/1982US4361836 Safety device at remote control of hydraulic or pneumatic machine tools
11/23/1982US4360807 Device for remote control of hydraulic or pneumatic machine tools
11/23/1982CA1136258A1 Device for implosion injection of sound waves in a liquid medium
10/1982
10/19/1982US4354524 Automatic reset pneumatic timer
10/19/1982US4354517 Pressure valve
10/19/1982US4354351 Load sensing steering
10/06/1982EP0061842A1 Directional valve with spool transfer loop
10/06/1982EP0061759A1 Control system for hydraulic circuit means including a variable displacement pump and actuator means
09/1982
09/28/1982US4351415 Hydraulic elevator installation
09/28/1982US4351357 Fail safe compensator used in a hydraulic servo control system
09/14/1982US4349319 Pressure and flow compensated control system with constant torque and viscosity sensing over-ride
09/14/1982US4348864 Tank assembly for hydraulic system
08/1982
08/24/1982US4345509 Contaminant trap for fluid operated rotary actuator
07/1982
07/27/1982US4341534 Method and apparatus for degassing the pressure fluid of a hydraulic system
06/1982
06/29/1982US4336903 Control valve
06/29/1982US4336826 Control valve
04/1982
04/15/1982WO1982001226A1 Fluid viscosity control for actuator circuit
04/06/1982US4323137 Work vehicle
04/06/1982CA1121233A1 Reciprocating piston fluid powered motor
03/1982
03/17/1982EP0047351A1 Fluid couplings
03/17/1982EP0047336A1 Hydraulic unit to operate one or more working and treating machines
02/1982
02/17/1982EP0045785A1 A fluid device.
02/16/1982EP0045785A4 A fluid device.
01/1982
01/07/1982WO1982000045A1 Contaminant trap for fluid operated rotary actuator
01/06/1982EP0042919A2 Method and apparatus for working or treating materials, especially flowable solid mixtures, and dispersions with oscillating tools
12/1981
12/08/1981CA1113834A1 Load sensing control for hydraulic system
12/01/1981US4303197 Control valve
11/1981
11/11/1981EP0039559A1 Pilot-controlled pressure relief valve assembly
11/03/1981US4298024 Valve timer devices
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