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)
04/1981
04/29/1981EP0027743A1 Control system for a hydraulic circuit including a plurality of parallel variable-delivery pumps
04/21/1981US4262695 Flow rate control valve
04/16/1981WO1981001034A1 Hydraulic load lifting system with automatic blocking valve
04/16/1981WO1981001029A1 Hydraulic manifold assembly
04/15/1981EP0026972A1 Control valve assembly, in particular for use in a vehicle hydraulic system
04/15/1981EP0026965A2 Hydraulic manifold assembly
04/14/1981US4261252 Piercing structure
04/07/1981US4259986 Control apparatus for a hydraulic power consumer
03/1981
03/31/1981US4258610 Control apparatus for a hydraulic power consumer
03/31/1981US4258609 Dual speed hydraulic piston assembly
03/25/1981EP0025609A1 Hydraulic system with selective pressure upstaging
03/19/1981WO1981000742A1 Controlled pressure upstaging and flow reduction
03/18/1981EP0025107A1 Lock valve with variable length piston and hydraulic system for a work implement using the same
03/17/1981US4256432 Construction of circuit for working vehicle operable as backhoe and also as dozer
03/17/1981US4256142 Hydraulic control
03/17/1981US4256017 Differential area electrohydraulic doser actuator
03/11/1981EP0024558A1 Selectively actuatable fluid control for a work implement
03/10/1981CA1097187A1 Arrangement to obtain equal travel of hydraulic cylinders
03/10/1981CA1097182A1 Fluid control system with automatically actuated motor port lock-out valves
03/05/1981WO1981000600A1 Lock valve with variable length piston and hydraulic system for a work implement using the same
03/05/1981WO1981000598A1 Selectively actuatable fluid control system for a work implement
03/03/1981US4253382 Steering valve assembly for steering and brake system
03/03/1981US4253379 Fluid control system
03/03/1981CA1096750A1 Hydraulic system with unloading valve assembly
03/03/1981CA1096749A1 Hydraulic control apparatus
02/1981
02/24/1981US4252050 Control valve unit for hydraulic actuator
02/24/1981US4251993 Hydraulic boat lift with regulating system therefor
02/24/1981CA1096271A1 Low pressure signal driven flow control system
02/24/1981CA1096270A1 Hydraulic control system
02/17/1981US4250794 High pressure hydraulic system
02/17/1981CA1095810A1 Hydraulic control system
02/10/1981US4249570 Exhaust pressurization of load responsive system
02/10/1981US4249569 Load responsive fluid control valve
02/05/1981WO1981000289A1 Pressure gearing down hydropneumatic driving device
02/03/1981US4248263 Digital fluid flow control apparatus
02/03/1981US4248136 Thrust device using hydraulic jacks
02/03/1981US4248134 Reset means for fluid control circuit
01/1981
01/28/1981EP0023030A1 Hydropneumatic drive with pressure amplifier
01/27/1981US4247133 Device with mounting plates for a valve battery
01/27/1981US4246934 Remotely controlled load responsive valves
01/27/1981US4246832 Control arrangement for a hydraulic force transmission
01/20/1981CA1093938A1 No translation available
01/13/1981US4244396 Digital fluid flow control system
01/13/1981US4244276 Hydraulic circuit
01/13/1981US4244274 Cylinder control device of hydraulic cylinder apparatus
01/07/1981EP0022105A1 A device for reducing piston velocity in a cylinder
01/07/1981EP0022021A1 A hydraulic motor having a reciprocating piston
01/07/1981EP0021742A2 Hydraulic actuator control
01/07/1981EP0020451A1 Closed center draft control valve
01/06/1981US4243855 Hydraulic system for simultaneous control, especially for the control of electric circuit breakers
01/06/1981US4243106 Device for setting blade of earthmover
01/06/1981CA1092943A1 Controlled demand priority hydraulic circuit
01/06/1981CA1092942A1 Delaying control for hydraulic motors
12/1980
12/30/1980US4241581 Synchronizer for hydraulic actuators
12/23/1980US4240457 Variable flow control valve for steering systems of articulated vehicles
12/23/1980US4240456 Modular element for a hydraulic flow divider unit
12/16/1980US4238991 Three-position actuator
12/09/1980US4237688 Hydraulic synchronous driving mechanism
12/01/1980EP0020451A4 Closed center draft control valve.
11/1980
11/26/1980EP0019352A2 Draw works control system
11/25/1980US4235155 Delaying control for hydraulic motors
11/25/1980CA1090233A1 Hydraulic control
11/18/1980CA1089738A1 Valve device for selectively connecting a pressure gauge
11/13/1980WO1980002446A1 Draw works transmission control
11/11/1980US4232849 Drill boom arrangement
11/04/1980US4231396 Load responsive fluid control valves
10/1980
10/29/1980EP0017660A1 Hydraulic press
10/28/1980US4230304 Arrangement to obtain equal travel of hydraulic cylinders
10/15/1980EP0017592A1 Hydraulic actuating device with five positions
10/15/1980EP0017549A2 Hydraulic power transmission circuit
10/15/1980EP0017537A2 Electrohydraulic doser actuator
10/15/1980EP0017351A1 Improvements in high pressure hydraulic systems
10/15/1980EP0016896A2 An apparatus for restricting the velocity of a hydraulic piston at its end positions
10/14/1980US4227442 Cylinder control device of hydraulic cylinder apparatus
10/07/1980US4226167 Air-spring return air cylinder
10/01/1980EP0016719A1 Hydraulic motor control device
09/1980
09/30/1980US4224858 Stroke-adjusting drive mechanism for machines
09/30/1980CA1086606A1 Fluid power system having multiple separately controllable double-acting fluid motors and reduced number of fluid conduits
09/30/1980CA1086584A1 Two position vacuum operated throttle kicker
09/23/1980US4224004 Knife shield
09/23/1980US4223531 Gas pressure to hydraulic pressure converter system in an oil pressure actuator
09/23/1980CA1086186A1 Welding gun
09/17/1980EP0015296A1 Device for remote control of hydraulic cranes
09/16/1980US4222409 Load responsive fluid control valve
09/09/1980CA1085267A1 Dual pump flow combining system
09/02/1980US4220073 Control valve for working machines
08/1980
08/21/1980WO1980001707A1 Load signal control of hydraulic motor displacement
08/12/1980US4216797 Load responsive control valve
08/12/1980US4216702 Pressure sensing regenerative hydraulic system
08/12/1980US4216700 Actuator device for actuating ejector of scraper
08/06/1980EP0014174A1 Hydraulic or pneumatic actuator
08/05/1980US4215844 Valve actuator system
08/05/1980US4215720 Fluid control valve system
08/05/1980US4215622 Hydraulic control system
08/05/1980CA1083011A1 Priority system
07/1980
07/29/1980US4214607 Unidirectional flow limiter
07/29/1980US4214506 Hydraulic control arrangement with at least one multiple position valve
07/22/1980CA1082263A1 Modular dash control valve manifold
07/15/1980US4212228 Power plant
07/15/1980US4212165 Hydraulic control arrangement
1 ... 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164