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8464758 Valve system  
The invention relates to a valve arrangement with a continuously variable directional control valve, wherein the valve slide thereof can be adjusted in the direction of five positions in order to...
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...
8464607 Cylinder with replaceable attachment member  
A cylinder includes a cylinder body defining a cylinder bore. End caps close opposite ends of the cylinder body. A piston/rod assembly of the cylinder includes a piston portion and a rod portion....
8459019 System and method for pilot-operated high pressure valve  
A system and method for operating a two-stage, high-pressure pumping system includes a low-pressure pump having an output configured to deliver a hydraulic fluid under a low-pressure at a...
8459173 Bidirectional hydraulic system for operating table  
A bidirectional hydraulic system for operating table is disclosed, which has a switch valve connecting a bidirectional hydraulic pumping device with movable units of an operating table. The switch...
8454900 Alkaline metal fuel pulse generator  
A method of dispensing small discrete quantities of fluidized alkaline metals fuels through a plurality of spindle shaft orifices into a hydrolyzation chamber at a high spindle shaft rotational speed.
8453441 System and method for pump-controlled cylinder cushioning  
A system and method for controlling the movement of an implement of an earthmoving machine. The system includes a hydraulic actuator adapted to move the implement. A variable displacement pump is...
8454331 Plate pump assembly for use with a subsurface pump  
A plate pump assembly for pumping various fluids including heavy crude. The plate pump assembly includes first and second chambers each having lower and upper valves. Primary upper and lower...
8449474 Self-actuated cylinder and oscillation spirometer  
A self-actuated cylinder comprising a cylinder housing comprising electro-magnetic force generating means to generate electro-magnetic forces, and a piston within the cylinder housing, wherein the...
8449266 Control valve for variable displacement compressor  
A control valve for a variable displacement compressor, in which the discharge pressure of the compressor introduced into a pressure sensing section applies urging force to a movement member, and...
8449267 Pump assembly and fluid metering unit  
Apparatus for a pump assembly and a fluid metering unit. The pump assembly can include a diaphragm with a portion of a body being molded over a portion of each one of a plurality of pistons. The...
8448440 Method and apparatus for achieving higher thermal efficiency in a steam engine or steam expander  
A high order of thermal efficiency is achieved in a steam engine or steam expander having a piston clearance that approximates zero together with a negligible amount of compression, such that...
8443713 Rotary cylinder device  
Disclosed is a small rotary cylinder device wherein friction loss is reduced and energy is conserved by reducing effects of a reaction force applied from cylinders to pistons, which is...
8443597 Safety device for hydraulic working machine  
There are provided: control valves 22-24 that control flow of pressure oil from the hydraulic source 21 to the hydraulic actuators 15-17; electric lever devices 51-53 that output electrical...
8443827 Controlling device for hydraulic consumers  
A controlling device for hydraulic consumers (10, 12) has one controlling valve (18) for controlling a supply pipeline (TReg) for the hydraulic consumer (10, 12) and a tank return pipeline (TRO)....
8439859 Catheter device  
The catheter device comprises a drive shaft connected to a motor, and a rotor mounted on the drive shaft at the distal end section. The rotor has a frame structure which is formed by a screw-like...
8434398 Method of controlling a hydraulic actuator  
A control method for controlling a hydraulic actuator to impart oscillatory excitation to a load, the actuator comprising at least one hydraulic chamber and a movable member capable of moving in...
8429908 Hydraulic system  
A hydraulic system includes an engine driven variable displacement hydraulic pump which supplies fluid to a hydraulic consumer and an electronic control unit. A flow rate adjusting unit includes a...
8430016 Control valve assembly with a workport pressure regulating device  
A hydraulic system has several valve sections, each having a directional valve that controls fluid flow from a pump to a hydraulic actuator. A mechanism senses a greatest pressure among the...
8430017 Control device for a hydraulic motor  
A control device for controlling a speed of a hydraulic motor includes a housing defining a first void. A speed valve is disposed within the first void and is moveable between a first speed valve...
8427082 Method for absorbing the displacement of a plunger in a linear electrodynamic motor under the influence of an external force  
The invention relates to a method for absorbing the displacement, under the influence of an external force, of at least one plunger (10,20) in a linear electrodynamic motor comprising a least an...
8418452 Hydrostatic transaxle  
A hydraulic drive device including a hydraulic pump and hydraulic motor disposed in a casing and driving an axle having an interior end disposed inside the casing and abutting against an interior...
8418598 Driving device  
A driving device for pivoting a flap with respect to a body includes a cylindrical pressure tube having a closed first end and a second end with a seal, a piston dividing the pressure tube into a...
8418958 Landing gear actuation control system  
A hydraulic control system for an aircraft landing gear system has a hydraulic pressure source connected to a hydraulic fluid pressure transmission line, and at least one hydraulic actuator for...
8419345 Actuator  
In one embodiment a system is disclosed that includes an actuation device coupled with a turbomachinery mechanism. The actuation device can include multiple fluid pathways and a valve to...
8419381 Tandem piston pump  
In a tandem piston pump (1) from which pump discharge pressure from four systems is extracted, a tilt axis direction of a front swash plate (14) and a tilt axis direction of a rear swash plate...
8418672 High leverage rotary internal combustion engine  
An internal combustion engine having a generally rotary design is described. The engine includes a rotor that alternately rotates about first, second, and third axes of rotation as the rotor...
8418599 Axial piston machine having a return device  
An axial piston machine is provided. The pivoting cradle of the axial piston machine has variable tilt. The axial piston machine has at least one adjustment device extending substantially in the...
8419382 Piston compressor  
A compressor includes a rotary shaft, a cam, a cylinder block, pistons, a thrust bearing, a rotary valve, and an oil passage. The rotary shaft has an in-shaft passage formed therein. The in-shaft...
8413437 Transmission hydraulic control system having independently controlled stator cooling flow  
A hydraulic control system includes a source of pressurized hydraulic fluid for providing a pressurized hydraulic fluid, a main line circuit in fluid communication with the source of pressurized...
8413572 Auto attachment coupler with abductor valve  
A hydraulic system is disclosed that utilizes a switching block to selectively allow pressurized fluid to be stolen from a master or lift cylinder and directed to a single acting cylinder to...
8413688 Device for controlling a pilot pressure signal  
A device (100, 200, 200bis, 300, 300bis) for controlling a pilot pressure signal of hydraulic valves (3), for controlling the handling of gravitational loads (M), operating between two pilot lines...
8408352 Energy efficient power steering pump control system  
An electronic control unit monitors pressure conditions present at the input to the steering system and other vehicle data signals and then provides override control of a hydro-mechanical flow...
8401748 Method and device for influencing the traction force during shifting operations of a manual transmission in vehicles  
In a method for influencing the traction force during shifting operations of a manual transmission in vehicles having at least two drive axles, the drive system of the first axle is activated in...
8397624 Hydraulic actuator and joint driving unit employing the same  
There are provided a swash member and a first and second rotational members which are held on a base member through a universal joint mechanism and can rock about two axes out of three orthogonal...
8387514 Hydrostatic piston machine with output volume flow in the circumferential direction  
A hydrostatic piston machine with a cylinder drum, which is rotatably mounted in a housing, is provided. A plurality of cylinder bores are disposed in the cylinder drum, which bores can be...
8387378 Hydraulic system having automated ride control activation  
A hydraulic system for a mobile machine having an implement is disclosed. The hydraulic system may have a hydraulic actuator configured to move the implement, a storage device configured to store...
8381757 Valve device  
A valve device for a hydraulic circuit (10) divides the incoming volume flow into at least two pre-determined partial flows for supplying hydraulic consumers (V1, V2) of the circuit (10) and has...
8382445 Air logic controller  
An air logic controller for increasing the efficiency of an air operated double diaphragm pump. The air logic controller may increase the efficiency of the pump by controlling the supply of...
8382449 Fluid machine with radial cylinders  
A fluid machine with radial cylinders, includes cylinders being fixed with respect to a body wherein the cylinders are peripherally spaced in a rotation plane of a crank rotating with a driving...
8381524 Reciprocating expansion engine and piston of a reciprocating expansion engine  
A piston and a reciprocating expansion engine with a piston having a piston head, a piston neck, and a piston shaft are described. The piston head has at least one groove which runs in a...
8375842 Electro-pneumatic system for controlling a double-acting pneumatic actuator  
In an electro-pneumatic system for controlling a double-acting pneumatic actuator having first and second working chambers, first and second preliminary pneumatic control components generate first...
8375989 Method of operating a control valve assembly for a hydraulic system  
A method of operating a control valve assembly for a hydraulic system includes detecting the current operation of a first position sensor and a second position sensor to determine if at least one...
8375975 Load sensing directional control valve with an element having priority under saturation conditions  
The invention relates to the field of load sensing, flow sharing directional control valves for controlling an operating machine, such as an excavator. The directional control valve of the present...
8375843 Brake booster device with damping element  
The present invention relates to a brake booster device for a vehicle brake system comprising a force input element, a control valve arrangement actuable via the force input element, a chamber...
8371552 Shift actuator valve having a pressure dead band  
A valve assembly having a pressure dead band includes a first valve or sleeve slidably disposed within a valve body. A second valve is partially slidably disposed within the first valve and...
8365652 Adjusting element  
An adjusting element with a closed first end, a cylinder, a piston displaceably arranged in the cylinder that divides the cylinder into a first work space remote of the first end and a second work...
8365879 Brake actuating device of a vehicle  
A brake actuating device has an actuator functionally connected between a piston and a brake pedal lever. The actuator is capable of varying the path length of a force-conducting connection...
8365690 Hydraulically operated valve control system and internal combustion engine comprising such a system  
A hydraulically operated valve control system includes a hydraulic flow divider including a hydraulic valve adapted to distribute, between two lines feeding respectively to actuators coupled to...
8365523 Hydraulic assembly for driving and controlling small hydraulic units  
A hydraulic assembly for driving and controlling small hydraulic units, such as hydraulic cylinders of a brake and/or clutch of a forestry winch, is disclosed. The hydraulic assembly includes a...