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Match Document Document Title
8794123 Double valve constructed from unitary single valves  
A double valve includes a first unitary valve assembly and a second unitary valve assembly. Each unitary valve assembly includes a first outlet port, a second outlet port, and a spool. A first...
8635940 Solenoid valve assembly  
A solenoid valve including a spool received within a housing. The spool is configured to move to multiple positions within the housing. The housing includes supply ports, exhaust ports, and outlet...
8516944 Valve arrangement having individual pressure scale and load-lowering valve  
The invention discloses a valve arrangement for supplying pressure medium to a hydraulic load (2) having a directional valve (8), which has an inflow measuring diaphragm (10, 12) and a directional...
8464757 Hydraulic valve device  
A hydraulic valve device includes a fluid connection arrangement (10) having different connections and a mobile control (18) for at least partially controlling connections of the fluid connection...
7401541 Servo-pneumatic actuator  
A positioning system includes an actuator, valve (preferably pneumatic), position sensor and an electronic valve controller, integrated in a single unit. Continuously variable setpoints are...
7243591 Hydraulic valve arrangement  
The invention concerns a hydraulic valve arrangement (1) with a working connection arrangement having a first working connection (A) and a second working connection (B), both working connections...
7225719 Speed governor and distributing valve for hydraulic turbines  
A distributing valve for a speed governor of a turbine is provided, the distributing valve having a structure to reliably vent air therefrom. The distributing valve is disposed such that the...
7134378 Continuously variable transmission  
In a continuously variable transmission with a toroidal variable speed drive, in which a roller is supported pivotably between two toroidal disks for transmitting motion between the two toroidal...
6868672 Method of controlling a swinging boom and apparatus for controlling the same  
A swing speed compensation device is provided for use with a flow sharing hydraulic system. The present invention is mounted within the metering spool of a flow sharing valve and includes a poppet...
6701823 Method and device for controlling a lift cylinder, especially of working machines  
By means of a method and a device for controlling a lift cylinder (2) of working machines, wherein the hydraulic oil from the pressure cylinder space (12) is forced via a control element (3) into...
6626082 Table feed system  
In a machine tool by pulse drive of a hydraulic system, a piston of a hydraulic cylinder is connected with a table, and an outflow valve and an inflow valve, which form a pair, are respectively...
6170524 Fast valve and actuator  
A fast-acting valve includes a valve body and a spool slidably mounted within the valve body between first and second limit positions. Both the spool and the valve body have a flow passage which...
6109162 Control valve system  
A fluid control valve system for controlling the flow of hydraulic fluid supplied to and discharged out of an actuator having first and second actuator ports, comprising: a valve housing having a...
6047628 Control device for a steering system  
The present invention relates generally to agricultural machinery and, more particularly, to a device for controlling a double-acting steering cylinder of a steering system, having two working...
5855159 Hydraulic circuit for a boom cylinder in a hydraulic shovel  
A hydraulic circuit for a boom cylinder in a hydraulic shovel has a pressurized discharge fluid from a hydraulic pump that is driven by an engine, the pressurized discharge fluid supplied via a...
5317953 Neutral-centering valve control system  
A valve control system for controlling the operation of a pressure fluid-activated device such as a hydraulic cylinder includes a valve housing having an internal, sealed valve chamber therein. A...
5174189 Fluid control apparatus  
A fluid control apparatus which communicates a fluid cylinder with a fluid supply passage and a return passage, and a piston of the fluid cylinder is connected to a spoiler of an airplane.The...
5142927 Device for controlling a gear box of a vehicle, particularly an agricultural tractor  
The device comprises a lever movable by the operator between at least two working positions and a neutral position to achieve, by means of an hydraulic actuator of double acting follower type, of...
5058857 Solenoid operated valve assembly  
A valve assembly for an energy transfer unit comprises a source of hydraulic fluid, a reciprocating valve member reciprocable from an open position to a closed position, a slidable sleeve assembly...
5034577 Fluid actuated electrical switch  
The invention concerns an electrical reversing switch, which is especially suited for switching of high-frequency electrodes. This switch has an over mounted pneumatic cylinder, which moves on...
4974495 Electro-hydraulic valve actuator  
A fast acting valve actuator for actuating an intake or exhaust valve in an internal combustion engine of a type which is hydraulically powered and command triggered is disclosed and includes a...
4947733 Valve subplate for alternative double-acting or single-acting operation of cylinder  
A valve with four passages controls a piston (15) disposed in a cylinder (16). Between the body (1) of the valve and the cylinder (16) is disposed a plate (23) having passages (24, 25) which are...
4930403 Directionally controlled hydraulic cylinder  
A directionally controllable air cylinder has a set of circumferentially disposed air passages formed at each end of a closed tube. A sleeve manifold surrounds the tube and is pneumatically sealed...
4889034 Automatic reciprocator with manifold and sleeve valve  
A pneumatic reciprocator includes a cylindrical air cylinder concentrically mounted within a cylindrical manifold. A cylindrical sleeve valve is concentrically mounted for movement along the...
4838145 Multiple actuator hydraulic system and rotary control valve therefor  
A hydraulic system has a rotary valve which controls multiple hydraulic dces such as double-acting piston type actuators and which prevents deactivated devices from creeping. The valve has an...
4779418 Remote control system for a soil compactor  
A hydraulic operated control system for remotely operating a walk-behind soil compactor. A remotely operated three-position valve is connected to the pressure line of the hydraulic system of the...
4691618 Hydraulic control valve  
A hydraulic control valve having a valve housing including a cylindrical valve bore, the valve bore being in communication with a supply port, a discharge port and first and second delivery ports...
4545407 Jam compensating control valve  
An improved jam compensating control valve (45) includes a spool (65) which blocks and unblocks a flow passage through the valve. The spool is slidably disposed within an inner sleeve (60) which,...
4527461 Rotating servomotor apparatus  
A rotating servomotor apparatus for use in rotating guide vanes in a hydraulic machine, wherein for the purpose of suppressing occurrence of flow-induced vibrations, there is provided a bearing to...
4509407 Hydraulic control valve with maintenance-facilitating feature  
The control valve for an hydraulic actuator is provided with a particular operating state for venting the hydraulic system, which state is attainable positively whenever the hydraulic pressure is...
4494572 Four-way poppet valve assembly  
A four-way poppet valve having a housing provided with a pair of parallel bores, and a pair of valve stems slidably supported within the bores, each valve stem having one or more elastomeric...
4458582 Automatic rigging arrangement for actuation systems  
The invention relates to an automatic rigging arrangement for an actuation system wherein the rigging arrangement includes in combination a differential length feedback device that has a moveable...
4430927 Hydraulic valves  
A sectional hydraulic valve has clamped together an inlet section, an outlet section and at least one working section which can be integral with the inlet and/or outlet sections. Fluid supply and...
4325285 Compressed air motor  
A compressed air motor comprises a cylinder with a piston slidable in said cylinder and connected to a compressed air inlet through a slide valve mechanism which alternately admits respective...
4249455 Hydraulic servo-mechanism  
Hydraulic servo-mechanism having a housing in which is defined a cavity with an input member and an output member mounted coaxial therein and each supporting a single sprocket. In a bore of the...
4227481 Safety steering system for outboard motors  
A safety steering system to control torque rotation for boats having directable propeller outboard motors capable of pivoting about a vertical axis. An arm extending from the motor is connected to...
4191202 Polarity control valve  
A polarity control valve enables the undiscriminating interconnection of a pressure line and a return line to two available ports to provide fluid pressure at an output line and a return...
4184409 Hydraulic engine  
A hydraulic engine having a fluid pump for pumping a fluid medium under pressure to a fluid motor connected to the pump for being actuated by the fluid medium under pressure received from the...
4149450 Arrangement for working cylinders  
In working cylinders whose power stroke can be shifted to different operating positions in two consecutive steps, the invention provides a control cylinder which is actuated independently of the...
4090429 Fail-safe fluid control valve  
A fail-safe fluid control valve including a first sleeve fixedly accommodated in a valve housing, a second sleeve reciprocably movably received in the first sleeve. The first and second sleeves...
4050476 Low noise hydraulic servo valve  
A fluid flow control valve which includes a body formed to define a chamber having inlet, outlet and actuating ports for supplying and receiving fluid to and from external hydraulic machinery to...
4003203 Hydraulic exciter of vibrations for a vibratory compactor  
A hydraulic exciter of vibrations for a vibratory compactor includes an exciter containing a piston which is movable to and fro in the cylinder and either the piston or the cylinder is connected...
3983791 Control handle  
Control system including an hydraulic valve and cylinder and including apparatus for indicating to the operator the exact point when pressure fluid starts to flow to the cylinder.
3968733 Hydraulic power-steering system for automotive vehicles  
A steering shaft, linked with the dirigible wheels of an automotive vehicle and coupled with a hydraulic servomotor for rotation in either direction under the control of a main valve, has two...
3918351 Integrated piston-cylinder and control valve assembly  
A hand held, automatic labelling machine in which the printing head and feed roller are powered by a double acting piston and cylinder. Pressurized fluid is directed to opposite sides of the...
3906837 Power steering gear with torsion rod valve centering mechanism  
A power steering device has a slidable power piston, a translatable spool valve within the piston, and a tubular externally and internally threaded input shaft passing axially through the spool...
3892164 Servo control for machine tools  
A servo-mechanism is designed to control the movement of a piston in a cylinder the latter two members being designed to control the movement of a machine tool part. The valve of the...
3885456 Servo-steering device for vehicles  
A servo-steering for motor vehicles in which a steering nut is rotatably and axially non-displaceably supported in the working piston and is helically movably connected with a steering worm...
3818800 ELECTROHYDRAULIC REMOTE-CONTROL DEVICES OF SLIDE DISTRIBUTORS  
In electrohydraulic remote-control devices for distributor slide valves having manual or mechanical control, the control actuator of each distributor comprises a first face provided with means for...
3777621 DOUBLE-ACTING SERVOMOTOR  
Double-acting servomotor comprising a cylinder and a piston system with piston rods, wherein the clearance extending along the surfaces of the piston system and said cylinder movable relatively to...

Matches 1 - 50 out of 114 1 2 3 >