| 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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| 10/05/1999 | US5960922 Hydraulic cylinder such as a clutch master or servant cylinder in a motor vehicle having a bleed element |
| 10/05/1999 | US5960695 System and method for controlling an independent metering valve |
| 10/05/1999 | CA2033581C Time-control circuit for pneumatically operable devices |
| 09/30/1999 | DE19810921A1 Hydraulic microactuator acting in millimeter and sub-millimetre range as part of liquid circuit |
| 09/28/1999 | US5957046 High speed hydraulic press |
| 09/28/1999 | US5956951 Adjustable magneto-rheological fluid device |
| 09/23/1999 | DE19836257C1 Filter element for hydraulic circuit |
| 09/23/1999 | DE19810603A1 Hydraulic drive system useful for driving construction machinery |
| 09/22/1999 | EP0828944B1 Compressed air maintenance device |
| 09/21/1999 | US5953977 Simulation modeling of non-linear hydraulic actuator response |
| 09/21/1999 | US5953915 For compressed air systems |
| 09/15/1999 | EP0817919B1 Hydraulic circuit |
| 09/14/1999 | US5950431 Tandem pump apparatus |
| 09/14/1999 | US5950430 Construction machine |
| 09/07/1999 | US5947441 Two-way seat-type valve |
| 09/07/1999 | US5947140 A hydraulic circuit |
| 09/02/1999 | WO1999043527A1 Air dryer reservoir module components |
| 08/31/1999 | US5943861 Hydraulic system for motor vehicle |
| 08/31/1999 | CA2088185C Two line pilot valve |
| 08/25/1999 | CN2334932Y Hydraulic system real time fault diagnosis device |
| 08/24/1999 | US5941689 Control system and method to control variable hydraulic pumps with a temperature sensor |
| 08/18/1999 | EP0935716A1 Check valve |
| 08/18/1999 | EP0935713A1 Valve system and manufacture of same |
| 08/11/1999 | EP0934472A1 Removal of air from hydraulic system |
| 08/11/1999 | CN2332842Y Externally-controlled hydraulic motor with braking device |
| 08/10/1999 | US5935031 Hydraulic tensioner having an air vent channel |
| 08/10/1999 | US5934431 Plateau control algorithm for an electro-hydraulic actuator |
| 08/05/1999 | DE19901442A1 Action detection device for operating valve for hydraulic machinery |
| 08/04/1999 | EP0933274A2 A hydraulic control unit |
| 08/04/1999 | EP0932773A1 Electrohydraulic system and apparatus with bidirectional electric-motor hydraulic-pump unit |
| 08/04/1999 | EP0932536A1 Hydraulic unit |
| 08/03/1999 | US5931739 Fail-safe ride simulator |
| 07/29/1999 | DE19805519C1 Overload safety for mechanical press |
| 07/22/1999 | DE19816766A1 Pressure control device for skid-controlled motor vehicle brake units |
| 07/21/1999 | EP0614016B1 Hydraulic drive unit of hydraulic working machine |
| 07/21/1999 | CN2329803Y Water-cooled plunger hydro-cylinder |
| 07/13/1999 | US5922032 Controller and method of controlling a hydraulic control network with latching valve |
| 07/08/1999 | WO1999034100A1 Device for digital hydraulic pressure transformation (dhpt) |
| 07/06/1999 | US5918526 Within the length of the work stroke |
| 06/30/1999 | EP0926351A2 Hydraulic control apparatus with a multi-part housing |
| 06/29/1999 | US5917139 Air dryer reservoir module |
| 06/29/1999 | US5916139 Hydraulic system and pump |
| 06/29/1999 | US5916138 Hydrostatic transmission |
| 06/24/1999 | WO1999031394A1 Controller and method of controlling a hydraulic control network with latching valve |
| 06/24/1999 | WO1999030947A1 Air dryer reservoir module |
| 06/24/1999 | DE19754828A1 Hydraulische Steueranordnung für eine mobile Arbeitsmaschine, insbesondere für einen Radlader, zur Dämpfung von Nickschwingungen The hydraulic control arrangement for a mobile working machine, in particular for a wheel loader, for damping wagging vibrations |
| 06/23/1999 | CN2325573Y Pressure stabilizing device for liquid circulation system |
| 06/22/1999 | US5914023 Actuator |
| 06/17/1999 | WO1999029996A1 Percussive tool |
| 06/17/1999 | WO1999029970A1 Hydraulic control mechanism for a mobile machine tool, especially a wheel loader, for damping longitudinal oscillations |
| 06/16/1999 | EP0809737B1 Electrohydraulic proportional control valve assemblies |
| 06/16/1999 | CN2324328Y Pancake motor |
| 06/10/1999 | DE19757864C1 Casing for hydraulic control of excavator vehicle drive |
| 05/26/1999 | CN1217769A Hydraulic pressure pilot circuit |
| 05/18/1999 | US5904358 Chuck device |
| 05/06/1999 | DE19802517A1 Device for remote control of vehicle and work machine drives |
| 05/04/1999 | US5899220 Electromagnetic fluid conditioning apparatus and method |
| 05/04/1999 | US5899065 Hydraulic fluid packet and kit containing the same |
| 05/04/1999 | US5899008 Method and apparatus for controlling an implement of a work machine |
| 04/29/1999 | WO1999020905A1 Fluid oscillator with extended slot |
| 04/29/1999 | DE19848310A1 Displacement volume control method for hydraulic pump in construction machine |
| 04/28/1999 | CN2316497Y 滤油器底座 Oil filter base |
| 04/27/1999 | US5896930 Control system in hydraulic construction machine |
| 04/22/1999 | DE19745429A1 Pneumatic height adjustment system for lawn mower |
| 04/22/1999 | DE19735267C1 Line filter for pneumatic brake lines in heavy commercial vehicles |
| 04/21/1999 | EP0909898A2 Compressed air maintenance unit |
| 04/21/1999 | CN1214418A Hydraulic system and pump |
| 04/20/1999 | CA2141304C Hydraulic elevator with accumulator energy storage and charging facility |
| 04/15/1999 | DE19744599A1 Hydraulic circuit with hydraulic medium esp. oil circulating in hydraulic line |
| 04/15/1999 | DE19744389A1 Valve with pressure medium inlet and outlet chambers connectable together by inlet valve |
| 04/14/1999 | EP0908653A1 Pilot operated pressure control valve |
| 04/14/1999 | EP0908413A2 Lift truck with a load grasping device and method for descending the load grasping device |
| 04/14/1999 | EP0908335A1 Height control device for vehicles with air springs |
| 04/14/1999 | EP0907834A2 Improvements in, or relating to, high speed actuators and vibrators based on electro-rheological fluids |
| 04/07/1999 | EP0907031A2 Device for controlling a hydraulic cylinder in a self-propelled harvester |
| 04/07/1999 | CN1213426A Single acting pneumatic piston-cylinder unit |
| 04/06/1999 | US5890509 Hydraulic temperature compensated cooler bypass control for an automatic transmission |
| 03/31/1999 | EP0857256B1 Pneumo-hydraulic converter for energy storage |
| 03/25/1999 | WO1998038845A3 Control system for a limited stall load actuator |
| 03/25/1999 | DE19741564A1 Hydraulic pressure store |
| 03/24/1999 | EP0902751A1 Process for venting a hydraulic assisted steering system |
| 03/18/1999 | DE19842023A1 Hydraulic control valve device for automatic braking device |
| 03/17/1999 | EP0902193A2 Piston accumulator with sealing device comprising deep-bed filter |
| 03/11/1999 | DE19839062A1 Hydraulic machine control unit |
| 03/11/1999 | DE19739412A1 Pilot-controlled slider valve for cylinder-piston unit |
| 03/10/1999 | CN2310196Y Hygroscopic air-filtering breath device |
| 03/10/1999 | CN1210208A Hydraulic servo device |
| 03/09/1999 | US5878765 Microprocessor-controlled position regulator |
| 03/09/1999 | US5878569 Energy conversion system |
| 03/02/1999 | US5876025 Cylinder apparatus |
| 03/02/1999 | US5875630 Hydraulic drive assembly |
| 02/24/1999 | EP0898085A2 Pressurised-fluid motor for electrorheological fluids |
| 02/24/1999 | EP0898084A1 Hydraulic pressure pilot circuit |
| 02/24/1999 | EP0897480A1 Device for saving energy |
| 02/23/1999 | US5873244 Positive flow control system |
| 02/04/1999 | DE19825759A1 Hydraulic drive unit for assisting auxiliary functions in motor vehicle |
| 02/03/1999 | EP0894982A2 Hydraulic servo device |
| 02/02/1999 | US5865597 Liquid pump for preventing contact between the sealing structure and pressurized liquid |
| 02/02/1999 | US5865028 Energy recovery device |
| 02/02/1999 | US5864920 Door closer for the non-fire side of a fire-door safety installation |