| 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) |
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| 07/15/1993 | DE4217503A1 Lubrication feed for fluid power cylinders - is independent of fluid power medium and supplies lubricating oil to cylinder working parts |
| 07/15/1993 | DE4138903A1 Lubricating feed for fluid power cylinders - is independent of fluid power medium and supplies lubricating oil to cylinder working parts |
| 07/01/1993 | DE4203062C1 Hydraulic installation with main and sec. flow circuit and sec. flow filtration - comprises liq. tank with partition for limited screening of liq.flow into and out of tank. |
| 06/16/1993 | EP0546300A1 Electrohydraulic control system |
| 06/15/1993 | US5218895 Electrohydraulic control apparatus and method |
| 06/10/1993 | WO1993011363A1 Energy recovering device |
| 06/09/1993 | DE4140408A1 Electrohydraulic control of linear hydraulic actuator - has proportional flow control valve responding to pressure feedback to provide load compensating action |
| 06/01/1993 | US5215444 System for controlling oil viscosity and cleanliness |
| 05/18/1993 | US5211200 Automatic bleed valves |
| 05/13/1993 | DE4136630A1 Sliding displacement device for machine parts with coarse threads - works in pneumatic or hydraulic rotary piston cylinders and has separate lubricating circuits for cycle oil |
| 05/04/1993 | US5207059 Hydraulic control system having poppet and spool type valves |
| 04/29/1993 | WO1993008406A1 Fluid power regenerator |
| 04/29/1993 | DE4135016A1 Heating system for pressure medium in hydraulic circuit - uses continuous measurement of temp. of pressure medium and/or part of circuit |
| 04/22/1993 | DE4201081C1 Releasable automatic filter for hydraulic circuit - has multiway control valve connectable to four peripheral branches and to filter |
| 04/14/1993 | CN1070992A Hydraulic oil temp. controlled device of small engineering machinery |
| 04/13/1993 | US5201343 Extensible house for reducing pressure pulses |
| 03/31/1993 | CN1070456A Open hydraulic circulation oil line system without oil tank |
| 03/31/1993 | CN1070455A Semi-opened hydraulic circulation oil line system |
| 03/24/1993 | EP0532502A1 Negative load control and energy utilizing system. |
| 03/18/1993 | WO1993004757A1 Process for separating gaseous components from pourable media and device and installation therefor |
| 03/17/1993 | CN2128161Y Self-closing oil suction filter |
| 03/04/1993 | WO1993004290A1 Hydraulic system with pump and load |
| 02/25/1993 | DE4127342A1 Hydraulisches system mit pumpe und verbraucher Hydraulic system with pump and consumer |
| 02/24/1993 | EP0351402B1 Load responsive control system adapted to use of negative load pressure in operation of system controls |
| 02/16/1993 | US5186213 29 |
| 02/16/1993 | US5186151 Device for stepping up or transmitting forces and strokes |
| 02/16/1993 | US5186000 Hydraulic drive system for construction machines |
| 02/02/1993 | US5182908 Control system for integrating a work attachment to a work vehicle |
| 01/26/1993 | CA1313002C Apparatus for flushing of hydraulic pipe systems or the like |
| 01/21/1993 | WO1993001417A1 Hydraulic system with pump and load |
| 01/12/1993 | US5177969 Thermochemical actuation method and apparatus |
| 01/07/1993 | EP0297106B1 Load sensing circuit and electrohydraulic control for load compensated directional control valve |
| 01/07/1993 | DE4122360A1 Hydraulic system for road vehicle hydraulically damped two-chamber motor bearing - uses electro-rheological fluid that has viscosity varied by applying voltage difference to electrodes to control fluid damping in system |
| 01/07/1993 | DE4122351A1 Vehicle hydraulic system using electro-rheological fluid and HV amplifier - applies transfer function to produce several kilovolts for electrode with compensation for disturbances in hydraulic section |
| 12/29/1992 | US5174118 Fluid pressure-responsive unit |
| 12/24/1992 | DE4120447A1 Automatic vent for hydraulic system - has pressure limiting valve in regulating unit control area with set opening pressure corresponding to hydraulic pressure required for unit |
| 12/21/1992 | WO1993000515A1 Exhaust pressurizing circuit including flow amplification |
| 12/21/1992 | CA2083136A1 Exhaust pressurizing circuit including flow amplification |
| 12/15/1992 | US5170625 Control system for hydraulic pump |
| 12/10/1992 | WO1992021559A1 Air-purging device for hydraulic boat steering arrangements |
| 12/08/1992 | US5169480 Time-control circuit for pneumatically operable devices |
| 12/02/1992 | EP0515984A1 Electrochemical actuator |
| 12/02/1992 | EP0515715A1 Linear actuation |
| 12/02/1992 | EP0515639A1 Hydraulic system. |
| 12/02/1992 | EP0515608A1 Hydraulic system. |
| 12/02/1992 | CN2123644U Constant temp. controlled hydraulic oil device |
| 11/25/1992 | EP0515215A1 Automatic bleed valves |
| 11/25/1992 | CN2122962U Srlg-sealed magnetic oil filter joint |
| 11/25/1992 | CA2069229A1 Automatic bleed valves |
| 11/12/1992 | DE4115488A1 Hydraulic circuit to produce oscillations - has valve slide operated by fluid motor powered by pressure source |
| 11/10/1992 | US5161959 Viscosity sensitive hydraulic pump flow control |
| 11/10/1992 | US5161373 Hydraulic control valve system |
| 10/21/1992 | EP0410995B1 Apparatus for flushing of hydraulic pipe systems or the like |
| 10/14/1992 | EP0508271A1 Slow starting valve |
| 10/09/1992 | WO1992017703A1 High force thermochemical actuator |
| 10/06/1992 | US5152142 Negative load control and energy utilizing system |
| 09/30/1992 | CN1064847A 液压升降机 Hydraulic lifts |
| 09/23/1992 | EP0505033A1 Viscosity sensitive hydraulic pump flow control |
| 09/23/1992 | EP0504415A1 Control system of hydraulic pump |
| 09/23/1992 | CN2116798U Portable hydranlic drive oil filter |
| 09/15/1992 | US5146746 Loading/unloading control apparatus for industrial vehicles |
| 09/08/1992 | WO1992015799A1 Negative load control and energy utilizing system |
| 08/26/1992 | EP0499694A2 Hydraulic control device |
| 08/19/1992 | EP0432156B1 A method of reducing pressure drop during the passage of a fluid, and a hydraulic system reservoir for circulation of a fluid |
| 08/18/1992 | US5138838 Hydraulic circuit and control system therefor |
| 08/16/1992 | WO1992014944A1 Hydraulic circuit and control system therefor |
| 08/16/1992 | CA2073865A1 Hydraulic circuit and control system therefor |
| 08/04/1992 | US5134853 Hydraulic drive system for construction machines |
| 07/22/1992 | CN2110737U Pulse jet oscillator |
| 07/22/1992 | CN2110736U Twisted bar type position deviation feedback apparatus |
| 07/15/1992 | CN2110116U Hydraulic driving device with filter |
| 07/14/1992 | US5129450 Hydraulic circuit with a cooling device |
| 07/07/1992 | US5128599 Automatic control system |
| 06/25/1992 | WO1992010685A1 Hydraulic system |
| 06/25/1992 | WO1992010684A1 Hydraulic system |
| 06/09/1992 | US5119717 Method of controlling solenoid valves for a hydraulic actuator, with a time delay between closing a normally open valve and opening a normally closed valve |
| 06/02/1992 | US5118259 System for controlling oil viscosity |
| 05/27/1992 | EP0487341A1 Fluid control and conditioning units |
| 05/19/1992 | US5113655 Apparatus and method for removing liquid condensate from a compressed-air system |
| 05/06/1992 | WO1992008055A1 Exhaust pressurizing control for a fluid system |
| 05/06/1992 | CN2103690U Buffer for oil-pressure system |
| 05/06/1992 | CA2082931A1 Exhaust pressurizing control for a fluid system |
| 05/05/1992 | US5109672 Method and apparatus for cooling and replenishing aircraft hydraulic actuators |
| 04/30/1992 | WO1992007193A1 Modularly assemblable compressed air preparation system for a pneumatic mechanism |
| 04/29/1992 | EP0482925A1 System for controlling oil viscosity |
| 04/28/1992 | US5107875 Apparatus for flushing of hydraulic pipe systems or the like |
| 04/16/1992 | WO1992006306A1 Control system of hydraulic pump |
| 04/16/1992 | WO1992006305A1 Circuit capable of varying pump discharge volume in closed center-load sensing system |
| 04/16/1992 | DE4032515A1 Modular zusammensetzbares druckluftaufbereitungssystem fuer eine pneumatik Modular assembleable compressed air treatment system for a pneumatic |
| 04/16/1992 | DE4032435A1 Electrohydraulic control device for parallel hydromotors - has main valve stage associated with each hydromotor and common pre-control stage |
| 04/09/1992 | DE4031494A1 Hydraulic oil storage tank - has protection device against condensation water comprising guide plate catching droplets and conducting them away |
| 04/01/1992 | EP0477546A1 Direct drive servovalve having bearing filter |
| 04/01/1992 | EP0327604B1 Device for preventing the deposit of fly fibre |
| 03/31/1992 | US5099884 Electrorheological fluid plate valve |
| 03/24/1992 | US5097857 Electro-hydraulic valve-actuator system |
| 03/18/1992 | EP0362206B1 Hydraulic drive |
| 03/17/1992 | US5095971 Apparatus for water-cooling oil used in a hydraulic system for actuating an injection molding machine |
| 03/17/1992 | US5095808 Sequential remote control plug release system |
| 03/11/1992 | EP0474338A1 Hydraulic transmission system |
| 03/03/1992 | US5092408 Control device for a dual function machine |