Patents for F15B 11 - Servomotor systems without provision for follow-up action (16,384)
06/1994
06/23/1994DE4243578A1 Hydraulic circuit for garbage truck
06/22/1994EP0602701A1 X-ray device with a hydraulic system
06/22/1994EP0602425A1 Variable force cylinder device
06/16/1994DE4241780A1 Evacuated bellows with linearly movable piston for use in vehicles - has chamber connected to two low pressure lines via valves operating against spring according to piston position
06/16/1994DE4241764A1 Hydraulic circuit for automatic repetitive operation of hydraulic cylinder - has direction control valve with cylinder stroke end detector for valve changeover control
06/15/1994EP0601912A1 Three position actuator
06/15/1994EP0500730B1 Quick drop valve
06/15/1994CN1087974A Hydraulic cylinder multi-cylinder synchronous interlocking device
06/14/1994US5320047 Desk having self-releveling height adjustment and hydraulic circuit therefor
06/14/1994US5319933 Proportional speed control of fluid power devices
06/14/1994US5319932 Power sensing regenerator
06/09/1994WO1994012795A1 Hydraulic system
06/09/1994WO1994012794A1 Brake device for inertia body driving hydraulic circuit
06/09/1994CA2147477A1 Hydrolic system
06/08/1994EP0600336A2 Air-oil pressure intensifier with isolation system for prohibiting leakage between and intermixing of the air and oil
06/08/1994EP0512983B1 Airflow control system pump and housing
06/07/1994US5317956 Pivoting actuator and a pop-up target incorporating same
06/07/1994US5317871 Circuit capable of varying pump discharge volume in closed center-load sensing system
06/05/1994CA2109396A1 Air-oil pressure intensifier with isolation system for prohibiting leakage between and intermixing of the air and oil
06/01/1994DE4240076A1 Hydraulic control device for double work cylinder, esp steering appts. - controls both chambers of steering appts with proportional valve supplied by pressure source, and includes digital control circuit
06/01/1994DE4240075A1 Hydraulic adjuster for turning IC engine camshaft - has adjusting member as single-acting cylinder, whose pressure chamber is continuously coupled to pump
05/1994
05/31/1994US5316038 Fluid distribution device
05/31/1994US5315828 Valve assembly for load independent control of multiple hydraulic loads
05/31/1994US5315827 Apparatus for switching flow rate for attachment
05/31/1994US5315826 Hydraulic drive system and directional control valve
05/26/1994WO1994011797A1 Electro-hydraulic control device and pressure reducing valve
05/26/1994WO1994011639A1 High-speed and high-load cylinder device
05/26/1994DE4239321A1 Fork lift stacking truck with hydraulic work platform activator - has electrically operated two-way flow regulation to maintain stable platform load position
05/25/1994CN2166270Y Hydraulic driver
05/24/1994US5313983 Remote hydraulic control systems
05/24/1994US5313873 Device for controlling the flow of fluid to a fluid unit
05/24/1994US5313795 Control system with tri-pressure selector network
05/18/1994EP0597657A1 Piston and cylinder assembly control system
05/18/1994EP0597468A1 Hydraulic feeding drive for flying upsetting presses
05/18/1994EP0597109A1 Hydraulically driving system
05/17/1994US5311808 Cylinder apparatus
05/11/1994WO1994010455A1 Flow dividing and combining switching device for a plurality of pumps in a load sensing system
05/11/1994WO1994010454A1 Pressure oil supply system having a pressure compensating valve
05/11/1994WO1994010453A1 Load sensing valve
05/11/1994EP0596140A1 Hydraulic driving system
05/11/1994DE4237901A1 Elektrohydraulische Steuervorrichtung und Druckminderventil Electrohydraulic control device and pressure-reducing valve
05/11/1994CN2164480Y Hydraulic oil spring
05/11/1994CN2164479Y Small positioning clamp hydraulic device
05/11/1994CN1086588A Multy stage hydrolic cylinder
05/04/1994EP0595116A1 Fluid pressure operated piston engine assembly
05/03/1994CA1329109C Multi-port self-regulating proportional pressure control valve
04/1994
04/28/1994DE4301068C1 Pneumatic installation for acceleration of pressure compensation - has pressure compensation valve operable by pressure difference drive via intermediary of pressure accumulator chargeable with system pressure
04/28/1994DE4236057A1 Distance sensor for press. converter - has immersion piston, pneumatic controller, working piston displacement detector and electronic controller
04/27/1994EP0593782A1 Hydraulic circuit device for construction machines
04/26/1994US5305789 Hydraulic directional control valve combining pressure compensation and maximum pressure selection for controlling a feed pump, and multiple hydraulic control apparatus including a plurality of such valves
04/26/1994US5305777 Speed controller
04/26/1994US5305681 Hydraulic control apparatus
04/20/1994EP0593125A1 Fluid flow divider
04/20/1994EP0592945A1 Hydraulic system for an injection moulding machine
04/20/1994EP0442908B1 Fluid-power cylinder provided with a cushioning device
04/20/1994CN1085633A Energy saving and monitoring pneumatic control valve system
04/15/1994CA2107612A1 Hydraulic device for use in a production machine
04/14/1994DE4243497C1 Pressure medium-operated positioning component - has number of piston-cylinder units displaceable in direction of longitudinal axis
04/14/1994DE4234193A1 Pneumo-hydraulic cylinder assembly - has transparent container from which oil is drawn into space behind working piston during forward working stroke and returned to container on reverse stroke
04/14/1994DE4234036A1 Valve arrangement, esp. for driving hydraulic load on mobile machine - has non=return valve between control valve and press. sensing line or press. chamber
04/13/1994EP0498855B1 Dual mode pneumatic control system
04/13/1994CN2161763Y Hydrodynamic clutch electric control gas or liquid damping speed governing executor
04/13/1994CN2161762Y Hydraulic controller for roll squeezer
04/12/1994CA1328382C Multi-stage air pressure cylinder
04/07/1994DE4333496A1 Valve actuator for telescopic cylinders on goods vehicle - uses diversion valve to direct fluid from one cylinder to another
03/1994
03/29/1994US5297382 Intensifier cylinder
03/29/1994US5297381 Hydraulic system
03/23/1994EP0588085A1 Method of controlling a hydraulic actuator
03/23/1994EP0587848A1 Multistage hydraulic cylinder
03/22/1994US5295429 Pressurized fluid directional flow control valve assembly
03/22/1994US5295353 Controlling arrangement for travelling work vehicle
03/22/1994CA1327918C Control system for the hydraulic tilt function of a marine engine
03/17/1994WO1994005917A1 Controller of hydraulic driving machine
03/17/1994WO1994005915A1 Hydraulic braking system
03/17/1994DE4230874A1 Pressure maintaining valve for active suspension level control - has in line spool arrangement with poppet stage having inset elastomer face seal to provide pressure maintenance
03/17/1994DE4230781A1 Linear module for handling systems with function unit coupling flange plates - has additional cylinder(s) with separate pressure supply, coacting with main cylinder for path division
03/17/1994DE4230716A1 Track dependent sequential control for two double-acting pressure rams - has controlled non-return valve in each ram piston, opened by mechanical stop on ram wall
03/15/1994US5293745 Fluid power regenerator
03/10/1994DE4328283A1 A hydraulic control circuit of a hydraulic distributor with load-independent throughput distribution - contains control line, hydraulic source and load detection line selection device ensuring highest operating pressure
03/10/1994DE4234063C1 Hydraulic cylinder electronic end-position damping system - senses piston position at ends of stroke using free-field, inductive, capacitive or cavity resonator detection, and varies hydraulic supply with controllable-cross=section choke
03/09/1994EP0586214A1 Control device for actuator
03/08/1994US5291676 Hydraulic drive system
03/08/1994CA2037279C Operating speed change-over device
03/03/1994WO1994004829A1 Hydraulic control device
03/03/1994WO1994004828A1 Hydraulic drive unit of hydraulic working machine
03/03/1994DE4228308A1 Double-cylinder hydraulic drive control system e.g. for machine tool - compensates change in volume of pressure spaces of cylinder by piezoelectrically-actuated pistons located at ends of cylinder, with piezoelectric actuators closed off from pressure spaces
03/02/1994EP0301096B1 Operation controller
03/01/1994US5289680 Two pump hydraulic system with relief valves having different relief pressures
03/01/1994US5289679 Hydraulic drive system with pressure compensating valve
03/01/1994CA2038903C Mounting plate
02/1994
02/24/1994DE4231399A1 Hydraulische Steuereinrichtung Hydraulic control device
02/22/1994US5289388 Electrohydraulic control of a die casting machine
02/22/1994US5287794 Hydraulic motor with inlet fluid supplemented by fluid from contracting chamber
02/17/1994WO1994003343A1 Linear advancement compensating apparatus for hydraulic circuit for hydraulically driven vehicles
02/17/1994DE4324177A1 Hydraulic controller, for use in e.g. cranes - contains emergency-stop valve pre-controlling pressure to isolating valve of pressure regulating pump.
02/16/1994EP0582859A1 Hydraulic control device
02/15/1994US5285642 Load sensing control system for hydraulic machine
02/09/1994EP0582498A1 Control system for a plurality of hydraulic actuators
02/09/1994EP0582497A1 Control system for a plurality of hydraulic actuators
02/09/1994EP0582099A2 Hydraulic system with load sensing