| Patents for F15B 11 - Servomotor systems without provision for follow-up action (16,384) |
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| 02/21/1990 | CN1006929B Balanced output hydraultc actuator system |
| 02/20/1990 | EP0276221A4 Compensated fluid flow control valve. |
| 02/20/1990 | CA1265977A1 Motor seal protector valve |
| 02/15/1990 | DE3925110A1 Tandem RAM with annular piston - has piston on inverted cup forming second pressure face over column on housing bottom |
| 02/13/1990 | US4900093 Impact ripper and control |
| 02/13/1990 | US4899700 Pneumatically powered valve actuator |
| 02/13/1990 | CA1265726A1 Compensated fluid flow control valve |
| 02/08/1990 | DE3826164A1 Hydraulik-steuerschaltung fuer ein kraftfahrzeug zur vorrangigen versorgung eines oder mehrerer verbraucher Hydraulic control circuit for a motor vehicle to the priority supply of one or more consumer |
| 02/06/1990 | US4898074 Servo-valve arrangement for power steering |
| 02/06/1990 | EP0351402A4 Load responsive control system adapted to use of negative load pressure in operation of system controls. |
| 02/01/1990 | DE3825726A1 Hydraulische schaltanordnung fuer ein fahrzeug mit einem hydrostatischen getriebe Hydraulic switching arrangement for a vehicle with a hydrostatic transmission |
| 01/31/1990 | EP0352742A2 Hydraulic impact tool |
| 01/30/1990 | US4896582 Method for reducing the piston speed, especially in the piston and cylinder assemblies of an excavating machine, and device for carrying out the method |
| 01/30/1990 | CA1264980A1 Haudraulic, pneumatic, pneumatic/hydraulic or combined pneumatic/explosion press |
| 01/25/1990 | WO1990000683A1 Hydraulic driving apparatus |
| 01/25/1990 | WO1990000494A1 Control system for the hydraulic tilt function of a marine engine |
| 01/24/1990 | EP0351402A1 Load responsive control system adapted to use of negative load pressure in operation of system controls |
| 01/24/1990 | CN1038966A Power transmission |
| 01/23/1990 | CA1264642A1 Piloted valve for braking or speed reducing in hydraulic systems |
| 01/18/1990 | DE3823892A1 Hydraulic system with several pumps |
| 01/10/1990 | EP0350190A2 Pneumatic cylinder |
| 01/08/1990 | EP0337991A4 Load sensing circuit of load responsive direction control valve. |
| 01/08/1990 | EP0297106A4 Load sensing circuit and electrohydraulic control for load compensated directional control valve. |
| 01/08/1990 | EP0224478A4 Load sensing circuit of load responsive direction control valve. |
| 01/04/1990 | DE3821849A1 Control arrangement for a hydraulic servomotor |
| 01/03/1990 | EP0349092A1 Hydraulic drive system |
| 01/03/1990 | EP0349067A1 A hydraulic actuating unit, in particular for raising a load, such as a hospital bed |
| 12/28/1989 | WO1989012756A1 Fluid control mechanism for power shovels |
| 12/28/1989 | DE3821348A1 Hydraulic circuit arrangement |
| 12/27/1989 | EP0149667B1 Plural hydraulic pump system with automatic displacement control |
| 12/26/1989 | US4889036 Speed reducer for pneumatic actuator |
| 12/26/1989 | US4889035 Magnetically actuated valve for cyclically operating piston-cylinder actuator |
| 12/20/1989 | EP0346352A1 Hydraulic device with regulable pump. |
| 12/20/1989 | CN1006165B Hydraulic controller in underground |
| 12/19/1989 | US4887428 Hydraulic control device for a continuously variable transmission for motor vehicles |
| 12/13/1989 | EP0345481A2 Pneumatic knocker |
| 12/13/1989 | CN1006085B Hydraulic control speed changing and governing loop |
| 12/06/1989 | EP0344714A1 Fluid-controlled actuator |
| 12/06/1989 | EP0344420A1 Hydraulic circuit for power shovel |
| 11/30/1989 | WO1989011411A1 Hydraulic circuit device of construction vehicle |
| 11/28/1989 | US4883091 Multi-port self-regulating proportional pressure control valve |
| 11/28/1989 | CA1263287A1 Hydraulic lift mechanism |
| 11/23/1989 | DE3816958A1 Valve arrangement for lowering a load acting on a hydraulic cylinder |
| 11/23/1989 | DE3815968A1 Control arrangement for a double-acting working cylinder |
| 11/21/1989 | US4881371 Auxiliary coupler pressure relief hydraulic system with pump drive ignition switch relief |
| 11/21/1989 | CA1263069A1 Selective control device for plural kinds of oil- hydraulic actuators |
| 11/16/1989 | WO1989011041A1 Hydraulic drive unit for construction machinery |
| 11/15/1989 | EP0341650A2 Hydraulic drive system for crawler-mounted construction vehicle |
| 11/15/1989 | EP0341530A1 Control device for pneumatic systems, in particular pneumatic cylinders for machines and production machines or production assemblies |
| 11/14/1989 | US4879945 Hydraulic control device |
| 11/09/1989 | DE3813981A1 Pneumatic regulating element |
| 11/08/1989 | CN1037021A High efficient driving system for vehicle |
| 11/02/1989 | DE3813020A1 Arrangement for the feed control of a hydraulic actuator |
| 10/26/1989 | DE3812753A1 Valve arrangement for a variable displacement pump |
| 10/25/1989 | EP0337991A1 Load sensing circuit of load responsive direction control valve |
| 10/24/1989 | US4875337 Construction machine dual-dump hydraulic circuit with piloted arm-boom cylinder supply priority switching valves |
| 10/18/1989 | EP0337129A1 Pressure reducing valve |
| 10/18/1989 | EP0337124A2 Hydrostatic transmission |
| 10/17/1989 | US4873912 Hydraulic driving arrangement |
| 10/11/1989 | EP0335939A1 Hydraulic drive system |
| 10/11/1989 | EP0177876B1 Linear drive |
| 10/03/1989 | US4870892 Control means for a hydraulic servomotor |
| 10/03/1989 | US4870889 Hydraulic device for fuel pumping apparatus |
| 10/03/1989 | US4870819 Control device for a hydrostatic drive for at least two actuators |
| 09/27/1989 | CN1035868A Controlling system for load-transducing hydraulic circuit |
| 09/26/1989 | US4869458 Liquid distribution valve |
| 09/26/1989 | CA1259885A1 Power drive unit and control system therefor |
| 09/21/1989 | DE3904183A1 Apparatus for the smooth starting of pneumatically operated feeding systems |
| 09/20/1989 | EP0203100B1 Hydraulic installation |
| 09/19/1989 | EP0267188A4 Hydraulic control unit. |
| 09/13/1989 | EP0332132A2 Electrohydraulic servo system, especially for injection molding machines |
| 09/13/1989 | EP0331958A2 Hydraulic control device |
| 09/12/1989 | US4864822 Control device for a hydrostatic drive for at least two actuators |
| 09/08/1989 | WO1989008199A1 Pilot operated valve device with assist function |
| 09/08/1989 | WO1989008198A1 Pilot-operated valve device |
| 09/08/1989 | WO1989008197A1 Operation valve device |
| 09/08/1989 | WO1989008190A1 Hydraulic control unit of hydraulic excavators |
| 09/06/1989 | EP0331076A1 Hydraulic circuit for cylinder |
| 09/05/1989 | US4862691 Pump drive speed regulator with control-pressure-generating valve having spring biased by cam face on load directional control valve |
| 08/31/1989 | DE3805287A1 Valve arrangement for at least one hydraulic consumer fed by a pump with variable delivery volume |
| 08/30/1989 | EP0244401B1 Control circuit for positioning an earthmoving blade |
| 08/29/1989 | CA1258809A1 Fluid operated system control |
| 08/24/1989 | WO1989007727A1 Starter connection for progressive pressurising of pneumatic installations |
| 08/22/1989 | US4858702 Hydraulic distributor for percussion apparatus driven by an incompressible fluid under pressure |
| 08/22/1989 | US4858651 Control valve for construction equipment |
| 08/16/1989 | EP0328472A2 Coupling incorporating a start-up valve for the gradual pressurisation of pneumatic installations |
| 08/16/1989 | EP0328193A1 Pneumatically powered valve actuator |
| 08/16/1989 | EP0327666A1 Hydraulic drive |
| 08/16/1989 | CN1034793A Stepless frequency-adjusting and cone valve controlled hydraulic shocking device |
| 08/09/1989 | EP0230413B1 Control system for independent control of fluid actuated devices |
| 08/08/1989 | US4854221 Pilot-controlled valve for braking or speed limitation in a hydraulic circuit |
| 08/02/1989 | EP0326150A1 Control system for load-sensing hydraulic drive circuit |
| 07/27/1989 | DE3801007A1 Rapid-motion control system for a push cylinder, in particular for a push cylinder of a loading crane |
| 07/25/1989 | US4850828 Plunger pump of quick pressure-rise type |
| 07/25/1989 | US4850191 Control arrangement for at least two hydraulic consumers fed by at least one pump |
| 07/11/1989 | US4845948 Hydraulic circuit with a booster circuit for operating the working members of earth-moving machines |
| 07/11/1989 | US4845947 Hydraulic drive system |
| 07/06/1989 | DE3836453A1 Valve arrangement for controlling and monitoring the working pressure of a hydraulic consumer |
| 07/05/1989 | EP0323216A2 Reciprocating device and switching mechanism therefor |
| 07/04/1989 | US4843949 Fluid control valve with variable pressure gain |