| Patents for F15B 11 - Servomotor systems without provision for follow-up action (16,384) |
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| 09/20/1991 | CA2038407A1 Fluid economizer control valve system for blowout preventers |
| 09/18/1991 | EP0446757A1 Hydraulic system to supply a variable displacement pump |
| 09/17/1991 | US5048396 Bypass valve |
| 09/17/1991 | US5048295 Hydrostatic transmission |
| 09/17/1991 | US5048294 Safety device for hydraulic closed circuit |
| 09/17/1991 | US5048292 Dual pump traverse and feed system |
| 09/11/1991 | EP0446115A1 Multiple actuator, supply circuit for such an actuator and telescopic boom as an application of this actuator |
| 09/11/1991 | EP0445829A2 Automatic speed shifting device |
| 09/11/1991 | EP0445703A2 Hydraulic drive system |
| 09/10/1991 | US5046400 Control valve system |
| 09/10/1991 | US5046310 Load-independent control device for hydraulic load devices |
| 09/10/1991 | CA1288661C Valve for hydraulic cylinders and the like |
| 09/03/1991 | US5044446 Constant pressure regulation of grader blades |
| 09/03/1991 | US5044256 Exhaust pressurizing control for a fluid system |
| 08/28/1991 | EP0442908A1 Fluid-power cylinder provided with a cushioning device. |
| 08/27/1991 | US5042253 Hydraulic-pneumatic cylinder device with annular flexible bag as interface |
| 08/27/1991 | US5042251 Secondary controlled hydrostatic driving gear having an open circuit |
| 08/22/1991 | WO1991012449A1 A compensation valve |
| 08/22/1991 | DE4004854A1 Hydraulic controller with changeover valve for two pumps - has two positions of slider selected in accordance with pressure for throttling of low-pressure flow |
| 08/22/1991 | DE4004773A1 Brake using IC-engine of tractor - has provision of adjustment pump to prevent engine overspeed with pressure limiting valve |
| 08/21/1991 | EP0442842A1 Hydraulic actuator with pressure intensifier |
| 08/20/1991 | US5041033 Hydraulic pressure mechanism for lifting and lowering outboard engine |
| 08/20/1991 | US5040565 Pilot operated control valve system |
| 08/20/1991 | US5040369 Method and apparatus for topping off a hydropneumatic pressure intensifier with oil |
| 08/20/1991 | US5040367 Blocking valve control system for lift driven by variable displacement pump |
| 08/14/1991 | EP0440807A1 Hydraulic driving apparatus of civil engineering/construction equipment |
| 08/14/1991 | EP0440802A1 Device for controlling hydraulic pump |
| 08/14/1991 | EP0440801A1 Hydraulic circuit |
| 08/14/1991 | CN2082782U Hydraulic oil return throttling speed gonverning loop equipped with pressure reducing valve interrelated to load |
| 08/14/1991 | CN1053826A Pivoting actuator and pop-up target incorporating same |
| 08/13/1991 | US5038813 Pneumatic starter device |
| 08/13/1991 | US5038671 Control valve |
| 08/08/1991 | WO1991011622A1 Pressure compensated hydraulic system |
| 08/08/1991 | WO1991011617A1 Airflow control system pump and housing |
| 08/07/1991 | EP0440526A1 Apparatus for driving piston by fluid pressure |
| 08/07/1991 | EP0440097A1 A counterbalance valve with a relief function |
| 08/07/1991 | EP0439621A1 Pressure oil feed circuit device for hydraulic cylinder of operation machine |
| 08/07/1991 | EP0287670B1 Driving control apparatus for hydraulic construction machines |
| 08/06/1991 | US5036930 Electromagnetically powered engine apparatus and method |
| 08/06/1991 | US5036662 Hydraulic cylinders |
| 07/31/1991 | EP0438936A1 Device for an automatic return of a hydraulic double-acting cylinder |
| 07/31/1991 | EP0438925A2 Multiplexed hydraulic control systems |
| 07/31/1991 | EP0438606A1 Valve device and hydraulic circuit device |
| 07/30/1991 | US5035312 Apparatus for controlling hydraulic pressure for clutch |
| 07/25/1991 | WO1991010834A1 Pneumatic time-switched actuator device |
| 07/25/1991 | WO1991010785A1 Device for changing over flow rate for attachment |
| 07/25/1991 | WO1991010784A1 System for changing over running speed of hydraulic excavator |
| 07/24/1991 | EP0437995A2 Hydraulic elevator control valve |
| 07/24/1991 | EP0437719A1 Brake valve system for hydrostatic transmission |
| 07/16/1991 | US5032704 Multi-pressure control system |
| 07/16/1991 | CA1286148C Hydraulic gain reduction circuit |
| 07/11/1991 | WO1991010069A1 Three-position actuator |
| 07/10/1991 | EP0436028A1 Hydraulic circuit for operating cylinder of working machine |
| 07/09/1991 | CA1285850C Control of the actuation of hydraulic consumers |
| 07/02/1991 | US5029067 Operation control device |
| 06/26/1991 | EP0434531A1 Device for initiating auto-reverse movement of a double acting hydraulic cylinder |
| 06/26/1991 | EP0433454A1 Hydraulic circuit apparatus |
| 06/25/1991 | US5025626 Cushioned swing circuit |
| 06/25/1991 | US5025625 Commonly housed directional and pressure compensation valves for load sensing control system |
| 06/18/1991 | US5024141 Method for the synchronous operation of juxtaposed cylinder devices |
| 06/13/1991 | DE3940958A1 Actuating tractor mounted equipment - involves hydraulic motor connected to one or two hydraulic pumps |
| 06/11/1991 | US5022359 Actuator with energy recovery return |
| 06/05/1991 | EP0430089A1 Actuator |
| 06/04/1991 | US5020570 Combined valve modular control panel |
| 06/04/1991 | US5020419 Three position fluid-controlled actuator |
| 06/04/1991 | US5020324 Charge flow priority circuit |
| 05/30/1991 | WO1991007594A1 Pivoting actuator and a pop-up target incorporating same |
| 05/30/1991 | CA2068315A1 Pivoting actuator and a pop-up target incorporating same |
| 05/29/1991 | CN2077922U Hydraulic oil-return-throttling-speed regulating return passage with unadjustable damper |
| 05/28/1991 | US5018935 Automatic pressure relief system for a hydraulic motor |
| 05/28/1991 | US5018431 Apparatus for positioning a work implement |
| 05/23/1991 | DE3938560A1 Hydraulic control for electric fork lift cylinder - uses single proportional throttle with valve cooperating with four-way pressure equaliser |
| 05/22/1991 | EP0428406A1 Reciprocating actuator |
| 05/22/1991 | CN2077499U Energy-saving hydraulic system for wheel-type engineering machinery |
| 05/21/1991 | US5016522 Multi-stage air pressure cylinder |
| 05/21/1991 | US5016519 Linear drive |
| 05/15/1991 | EP0427165A1 Hydraulic system, especially valve arrangement for an actuator supplied by a pump |
| 05/14/1991 | US5014824 Hydraulic elevator control valve |
| 05/14/1991 | US5014734 Quick drop valve |
| 05/14/1991 | US5014602 Hydraulic cylinder unit capable of being set in three positions |
| 05/10/1991 | CA2029008A1 Automatic pressure relief system for a hydraulic motor |
| 05/07/1991 | US5013198 Air-hydraulic pump with auxiliary pumping means |
| 05/07/1991 | US5012725 Three position actuator for shifting a two speed transfer case |
| 05/03/1991 | WO1991006898A1 Dual mode pneumatic control system |
| 05/02/1991 | EP0424449A1 Control system for the hydraulic tilt function of a marine engine |
| 05/01/1991 | CN2076182U Hydraulic superimposing speed controllerd |
| 05/01/1991 | CN1012513B Driving and controlling device for hydraulic building machine |
| 04/24/1991 | EP0423362A1 Counterbalance valve |
| 04/23/1991 | US5009068 Pneumatic cylinder with positioning, braking, and feed rate control |
| 04/23/1991 | CA1283342C Power transmission |
| 04/10/1991 | EP0271516B1 Liquid distribution valve |
| 04/09/1991 | US5005466 Cavitation-preventing pilot valve control system for power shovel hydraulic circuit |
| 04/09/1991 | US5005447 Torque wrench |
| 04/09/1991 | US5005358 Hydraulic drive system for crawler-mounted construction vehicle |
| 04/04/1991 | WO1991004415A1 Capacity control circuit for variable capacity pump |
| 03/27/1991 | CN1012211B Hydraulic energy exchanger |
| 03/26/1991 | US5002468 Switching device for reciprocating pumps |
| 03/21/1991 | WO1991003651A1 Speed change controller of running hydraulic motor |
| 03/20/1991 | EP0417657A1 Method of controlling hydraulic actuator |
| 03/20/1991 | EP0417087A1 Electrohydraulic guide system. |