Match Document Document Title
8925439 Valve control valve circuit for operating a single acting hydraulic cylinder  
A system for operating a single acting hydraulic cylinder includes a directional valve that has one extreme position in which a workport is connected to a tank return conduit, another extreme...
8926298 Hydraulic piston pump with a variable displacement throttle mechanism  
A radial piston pump has a plurality of cylinders within which pistons reciprocally move. Each cylinder is connected to a first port by an inlet passage that has an inlet check valve, and is...
8926256 Front lifting device for a tractor  
A front lifting device for a tractor, for hitching a tool thereto and controlling the same, includes: a chassis to be attached to the bodywork of the tractor; two lower arms hinged to the chassis...
8919699 Emergency opening system of an aircraft cabin door  
An emergency opening system (1) of an aircraft cabin door (3) mounted in an aircraft fuselage structure (4) by means of a hinge arm (2). An actuator (7), designed to assist the opening of the...
8919239 Servo brake actuator piston and servo brake equipped with such a piston  
Actuator piston (100) formed by an injection-molded piece (120) consisting of a cylindrical body (121) and a collar (122) to receive the hydraulic actuator (110) and the travel detector (160). The...
8919115 Hydraulic drive device for hydraulic excavator  
The operability when performing a combined arm-crowd and bucket operation can be improved. A hydraulic drive device for a hydraulic excavator includes: a bucket directional control valve and a...
8915075 Hydraulic control arrangement  
The invention relates to a hydraulic control arrangement for a mobile machine tool, particularly for a forklift, comprising at least two hydraulic loads (10, 12), one of them having a lifting...
8915480 Valve actuator system  
Valve actuator system and a system for operation of valves, which valve comprises a valve housing, which valve housing comprises at least one inlet and at least one outlet, which valve housing...
8910473 Pipe layer and warm-up method for pipe layer  
A warm-up pilot pressure control unit adjusts pilot pressure inputted to a first flow channel open/close unit so that the flow channel open/close unit is switched to an open state when a warm-up...
8910562 Pneumatic system for controlling aluminum bath crust breaker  
A pneumatic system controlling a bath crust breaker includes a cylinder defining a piston chamber. A piston is slideably displaced within the cylinder by pressurized fluid directed to either a...
8910659 Hydraulic valve device  
A hydraulic valve device has a valve housing (10) in which an activating piston (16) is guided in a movable manner. The activating piston (16) is actuatable by an actuating device (18) and...
8912455 Scale with an adjusting device configured as a fluid drive actuator imparting gearless translational motion to place the scale in a washing-down position or in a transport position  
A balance having at least one adjusting device (2, . . . ) having a drive, wherein the drive of the adjusting device is configured as a fluidic drive (4, . . . ), to which pressure can be applied...
8904776 Cylinder driving apparatus using air pressure  
A cylinder driving apparatus using air pressure including: a plurality of flexible tubes arranged in a case to flexibly move via high-pressure air; a connecting rod fixed at each of the flexible...
8899143 Hydraulic control system having variable pressure relief  
A hydraulic control system is disclosed. The hydraulic control system may have a pump configured to pressurize a fluid, an actuator, a position sensor associated with the actuator and configured...
8894384 Multi-piston motor/pump  
A multi-piston motor/pump is disclosed particularly useful for air motor applications incorporating a cylinder block having a plurality of radially extending pistons and cylinders. Each cylinder...
8894346 Skid steer loader blade control  
A work vehicle includes a motor associated with selectable movement of a frame by a first operator control. The frame structurally carries a cab structure and a manipulating structure associated...
8887618 Pressure wave generator with movable control rod for generating a pressure wave in a medium  
Examples of a pressure wave generator configured to generate high energy pressure waves in a medium are disclosed. The pressure wave generator can include a movable piston with a guide through...
8887620 Diaphragm installation tool  
An air-driven dual diaphragm pump comprises a pump body with a first air passage leading to a first air cavity with a first diaphragm, a second air passage leading to a second air cavity with a...
8881641 Fluid pressure driven motor with pressure compensation chamber  
A fluid-driven motor has a manifold with an arcuate seal including first and second valve openings and a sealing surface. A cylinder pivotally mounted on the manifold has a facing surface...
8875736 Hydraulic control valve for heavy equipment  
A hydraulic control valve for heavy equipment is provided, which includes a valve body having a supply passage supplied with a hydraulic fluid from a hydraulic pump, ports for supplying the...
8869675 Actuating drive for positioning a final control element and method for capturing a position of the final control element  
In an actuating drive or method for capturing a position of a final control element to be positioned by a drive member of the actuating drive, the final control element is pushed from an initial...
8870553 Fluid working machine and method of operating a fluid working machine  
A fluid working machine comprising a controller and a working chamber, an electronically controllable low pressure valve associated therewith and a fast high pressure valve associated therewith,...
8863642 Device for controlling the stroke of an actuator  
This invention relates to a feedback control device for controlling the stroke of an actuator stroke driven by a working fluid. The feedback control device for controlling the stroke correctly...
8863643 Co-axial crankless engine  
A co-axial crankless engine (1) having at least one cylinder (3) defining a longitudinally extending axis (XX). A pair of pistons (5, 6) are positioned to reciprocate in opposite directions along...
8863509 Meterless hydraulic system having load-holding bypass  
A hydraulic system is disclosed. The hydraulic system may have a pump, a hydraulic actuator, and first and second passages fluidly connecting the pump to the hydraulic actuator in a closed-loop....
8864102 Actuator  
An actuator for actuating a plunger of a valve is provided. The actuator has an inlet and includes first and second hollow caps. A main actuation assembly is provided between the caps. The main...
8863640 Control system for a hydraulic coupler  
A control system for extending and retracting a ram of a hydraulic coupler for coupling an attachment to an arm of an excavator or back hoe, said control system being adapted to provide an audible...
8863641 Fluid servo and applications  
A fluid pressure operated actuator device, comprising: a body defining a first chamber (2) comprising an inlet in fluid communication with a pressurized fluid source (1); and a moveable element...
8857175 Two-stage submersible actuators  
The present invention provides an improved two-stage actuator (20) that broadly includes: a first cylinder (21); an intensifier piston (22) mounted in the first cylinder for sealed sliding...
8857313 Fluid operated actuator system  
An actuation system (200) is provided. The actuation system (200) includes a fluid operated actuator (211) and a control valve (230). The control valve (230) is movable between a first position...
8857168 Overrunning pump protection for flow-controlled actuators  
A hydraulic system includes an actuator, a pump, rod side and cap side fluid connections between the pump and the rod and cap side chambers, respectively, at least one selectively actuatable...
8850808 Compressor and/or expander device  
Systems and methods for operating a hydraulically actuated device/system are described herein. For example, systems and methods for the compression and/or expansion of gas can include at least one...
8850952 Cylinder phaser valves  
A phaser valve for a piston and cylinder assembly helps to keep a pair of pistons in phase with each other. The phaser valve includes a poppet which is slidable between opposing seats of a valve...
8851580 Control valve system  
A pneumatic brake system that includes at least one pneumatic latching valve; a single device, such as a solenoid, for providing momentary pilot signals to pneumatic latching valve; a source of...
8851112 Dual configuration hydraulic manifold apparatus and system  
The invention relates to a hydraulic manifold apparatus and system, connectable to a dual stage motor, for use in the topdrive of drilling operations. The hydraulic manifold is switchable between...
8844291 Universal heat engine  
A universal heat engine is disclosed for converting energy from an input heat source to an output. The universal heat engine comprises a heat engine section and an output section. The heat engine...
8845303 Torque control for open circuit piston pump  
A pump control system and a torque control valve are disclosed. In one embodiment, the torque control valve includes a sleeve, a spool disposed in the sleeve, and a piston rod disposed through the...
8844566 Vitrectomy probe with adjustable cutter port size  
Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are...
8844280 Hydraulic control system having cylinder flow correction  
A hydraulic control system is disclosed. The hydraulic control system may have a hydraulic actuator, a valve arrangement, and an operator input device configured to generate a first signal...
8833391 Valve arrangement  
A valve arrangement is provided for selectively connecting a source of fluid pressure to a consumer in order to actuate the consumer in a predetermined direction. The valve arrangement utilizes a...
8834132 Apparatus having control valve and variable capacitance pump and hydraulic pressure circuit of internal combustion engine in which the same apparatus is used  
In a hydraulic pressure circuit including an introduction section through which oil is introduced, a main passage section installed at a downstream side of the introduction section to be...
8833068 Work vehicle and work vehicle control method  
A lock valve switching section switches a lock valve from a locked state to a released state when a lock member is switched from a locked position to a release position. An erroneous operation...
8833065 Control device for hybrid construction machine  
A control device for a hybrid construction machine includes a discharge pressure introduction passage that leads a discharge pressure from a variable volume pump to a regulator, and a load...
8833234 Cylinder  
A cylinder includes a piston moving in a cylinder housing fastened to a cylinder rod and rotatable about a cylinder longitudinal axis, and a position sensor comprising a sensor magnet and a sensor...
8826799 Single effect hydraulic cylinder  
The invention belongs to the field of single-effect hydraulic cylinders. It relates to a device that makes it possible to limit the pressure in the pressurization chamber of a single-effect...
8820061 Method for actuating a hydraulically movable working element of a working equipment, and a working equipment  
The invention relates to a method and to a working equipment for actuating a hydraulically movable working element (24), which is provided on a main body (14) of a working equipment (11),...
8820818 Vehicle with tilt cab  
A vehicle comprises a chassis and a tilt cab which is mounted to said chassis and is tiltable with respect to the chassis. The vehicle furthermore comprises a tilting system for tilting said tilt...
8806863 Hydraulic transmission control  
A hydraulic transmission unit comprises at least one pressure regulation valve (1) and a pilot control valve (2) which is connected to the pressure regulation valve (1) by a pilot control line...
8807168 Volume booster with seat load bias  
A fluid flow control device includes a trim cartridge, a diaphragm assembly, and a control element. The trim cartridge defines a cartridge supply port and an upper planar surface. The cartridge...
8807962 Multicellular pump and fluid delivery device  
The pump is provided with a plurality of pumping chambers and electrically activatable valves. An elastic membrane is arranged in each pumping chamber and divides the same into a first and a...