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 11 - Servomotor systems without provision for follow-up action
Patents for F15B 11 - Servomotor systems without provision for follow-up action (16,384)
11/1988
11/29/1988US4787204 Common relief valve
11/23/1988EP0291625A1 Plural hydraulic pump system with automatic displacement control
11/22/1988US4785714 Positive-displacement fluid motor having self-stopping function, and method and control circuit for stopping the motor
11/22/1988CA1245133A1 Fluid-operated cylinder and pneumatic and hydraulic system for operating same
11/17/1988WO1988008931A1 Load responsive system having synchronizing systems between positive and negative load compensation
11/15/1988US4784040 Control system for expelling liquid from a pneumatic actuator
11/15/1988US4784037 Locking apparatus for gate valves
11/15/1988CA1244742A1 Pressure supply device for a hydraulic system
11/10/1988DE3713799A1 Hydrostatic drive system
11/09/1988EP0086772B1 Load responsive system controls
11/08/1988CA1244316A1 Valve with flow force compensator
11/02/1988EP0288719A2 Control arrangement for pneumatic-hydraulic power drive
11/02/1988EP0127613B1 Valve device for controlling the delivery of pressurized liquid to two separate hydrostatic motors from a common source of pressurized liquid
11/02/1988EP0113708B1 Dual control input flow control valve
11/01/1988USH541 Housing for jam resistant actuator
11/01/1988US4781103 Fluid servomechanism
10/1988
10/26/1988EP0287670A1 Driving control apparatus for hydraulic construction machines
10/25/1988US4779836 Valve arrangement for controlling a pressure medium flow through a line of pressure medium
10/25/1988US4779599 Liquid fuel pumping apparatus
10/25/1988US4779419 Adjustable flow limiting pressure compensated flow control
10/25/1988US4779417 Hydraulic pressure system
10/25/1988US4779416 Control system for front end loader boom and bucket operating systems
10/25/1988CA1243585A1 Hydraulic control system
10/25/1988CA1243584A1 Coded fluid control system
10/19/1988EP0287529A1 Hydraulic circuit with a booster circuit for operating the working members of earth-moving machines
10/19/1988EP0287242A2 Hydraulic device
10/19/1988EP0286683A1 Hydraulic pilot type direction control valve
10/19/1988EP0286649A1 Proportional valve control apparatus for fluid systems.
10/19/1988EP0128912B1 Hydraulic, pneumatic, pneumatic/hydraulic or combined pneumatic/explosion press
10/18/1988US4777798 Universal control system for hydraulic cylinders
10/13/1988DE3709859A1 Pressure-medium-operated working cylinder
10/11/1988US4777383 Electrically controlled variable pressure pneumatic circuit
10/06/1988WO1988007636A1 Hydraulic clutch pressure control apparatus
10/06/1988WO1988007632A1 Load responsive system using load responsive pump control of a bypass type
10/06/1988DE3709211A1 Device for controlling the piston of a working cylinder
10/05/1988EP0285590A2 Hydraulic drive system
10/05/1988EP0284831A2 Hydraulic control device for groups of consumers
09/1988
09/29/1988DE3708492A1 Regulating device for a hydraulic system
09/27/1988US4773379 Apparatus for controlling pressure-activated actuator, and apparatus for controlling exhaust-gas recirculation
09/27/1988US4773306 Dual tandem composite cylinder assembly including separately formed cylinder barrels
09/27/1988US4773300 Three-position working cylinder having dual concentric pistons
09/21/1988EP0283053A2 Hydraulic valve arrangement
09/21/1988CN87107566A Control system for an impact ripper
09/20/1988US4771674 Device for regulating pressure fluid cylinders
09/14/1988EP0282167A2 Alternating valve
09/13/1988US4770210 For a fluid pressure valve system
09/13/1988US4770205 Bi-directional snub valve
09/13/1988US4770094 Control valve for regulating a pressure ratio between two pressure systems
09/13/1988US4770083 Independently actuated pressure relief system
09/13/1988US4769991 Balanced hydraulic propulsion system
09/08/1988DE3803009A1 Hydraulic drive
09/06/1988US4768420 Control arrangement for controlling a hydraulic drive for driving a piston pump
09/01/1988DE3802954A1 Hydraulic device having a variable pump
08/1988
08/31/1988EP0280532A2 Power transfer apparatus
08/31/1988CN88100812A Hydraulic device with adjustable pump
08/25/1988WO1988006114A1 Hydraulic device with regulable pump
08/24/1988EP0279362A1 Hydraulic system
08/24/1988EP0279356A1 Hydraulic system for a construction machine
08/24/1988EP0279315A2 Hydraulic control device
08/24/1988EP0171392A4 Load responsive system.
08/23/1988US4765225 Digitally controlled air-over-hydraulic actuator and method
08/18/1988DE3703576A1 Control arrangement for at least two hydraulic consumers fed by at least one pump
08/17/1988EP0277946A1 Compensated fluid flow control valve
08/17/1988EP0218603B1 Valve arrangement for controlling a pressure medium flow through a line of pressure medium
08/16/1988US4763560 Method and apparatus of controlling and positioning fluid actuator
08/16/1988US4763473 Arrangement for operating a diesel hydraulic drive
08/16/1988US4763472 Power transfer unit
08/11/1988WO1988005937A1 Operation controller
08/11/1988WO1988005871A1 Transmission gear for travelling hydraulic motors
08/11/1988DE3802917A1 Power-assisted steering system
08/11/1988DE3702911A1 Working cylinder with three positions
08/10/1988EP0277602A2 Hydraulic system for power actuator control in vehicles
08/10/1988CN87106788A Driving and controlling device for hydraulic building machine
08/03/1988EP0276222A1 Compensated fluid flow control valve.
08/03/1988EP0276221A1 Compensated fluid flow control valve
08/03/1988EP0144337B1 Automatic compressed air saving device
07/1988
07/27/1988EP0275969A2 Control device for a hydrostatic transmission for at least two users
07/27/1988EP0275968A2 Control device for a hydrostatic transmission for at least two users
07/26/1988US4759260 Super reliable air-spring return air cylinder
07/26/1988US4759183 Control arrangement for at least two hydraulic loads fed by at least one pump
07/20/1988CN87100060A Low-noise hydraulic system for file-marking press
07/19/1988US4757685 Pressure responsive hydraulic control circuit
07/14/1988DE3644737A1 Control arrangement for at least two hydraulic consumers fed by at least one pump
07/13/1988CN87106814A Hydraulic transmission mechanism with two kinds of transmission liquid
07/12/1988US4756372 Tool for closing a well tubing
07/12/1988US4756298 Apparatus for machining relatively hard building material
07/12/1988US4756235 Motor control valve assembly
07/05/1988US4754692 Fluid control system
07/05/1988CA1238837A1 Hydraulically operated percussive machine and an accumulator therefor
06/1988
06/30/1988WO1988004735A1 Load compensated valve
06/30/1988WO1988004734A1 Load sensing circuit and electrohydraulic control for load compensated directional control valve
06/29/1988CN87106589A Hydraulic circuit for hydraulic engineering machine
06/28/1988US4753269 Hydraulic latching apparatus for a control system
06/28/1988US4753157 Power transmission
06/28/1988CA1238553A1 Dual tandem composite cylinder assembly
06/22/1988EP0271516A1 Liquid distribution valve.
06/21/1988CA1238259A1 Four-way poppet valve
06/16/1988DE3739981A1 Quick-action venting valve
06/16/1988DE3641211A1 Hydrostatic drive system with two loads connected in parallel
06/15/1988EP0271076A2 Actuator with two mechanically connected one-way hydraulic cylinders
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