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7665579 Flow control valve having pressure compensating valve  
A flow control valve includes a pressure compensating valve and a first switching valve. The pressure compensating valve is configured to enlarge an opening area of a variable orifice between a...
7665298 Low voltage hydraulic system with electronic control for moving automatic closing apparatuses  
The invention concerns a hydraulic system for moving automatic closing apparatuses, comprising hydraulic actuating means capable to move at least one movable member coupled to at least one closing...
7661351 Hydrostatic axial piston machine and use of said machine  
The invention relates to a hydrostatic axial piston machine having a cylinder block which can be rotated about a first axis, the cylinder block being provided with a plurality of cylinder bores...
7661937 Axial piston machine and a control plate for an axial piston engine  
The invention relates to a control plate (20) for an axial piston engine (1). The inventive control plate (20) comprises a through hole (38) and a radial internal edge of said control plate (20)...
7650907 Hydraulic control apparatus  
A hydraulic control apparatus for a single action cylinder includes a switch valve for supplying fluid to and draining fluid from the cylinder, a cylinder side passage connected to the cylinder, a...
7647858 Differential piston  
A differential piston (1), designed as an annular piston, having pressure chambers (8, 9) with at least one of the pressure chambers (8, 9) being pressurized from radially inside the differential...
7644646 Three position servo system to control the displacement of a hydraulic motor  
A three position servo system. The servo system has a servo housing that has first and second control ports disposed therein in a cavity in fluid communication with the first and second control...
7644647 Hydraulic actuating device for actuating a shift rod in particular of a gearbox for motor vehicles  
There is disclosed a hydraulic actuating device for actuating a shift rod in particular of a gearbox for motor vehicles, which comprises a cylinder chamber provided in or on a gear housing for...
7640743 Aircraft flight control user interface linkage system  
A user interface linkage system includes first and second user interfaces that are linked by a single hydraulic circuit. The system is configured to provide compensation for relatively slow changes...
7637202 Hydraulic motor/pump  
A hydraulic machine which can exchange hydraulic fluid pressure with rotational motion of an input/output means, having a radial arrangement of a plurality of hydraulic piston and cylinder...
7637200 Pneumatic brake booster  
A pneumatic brake booster includes a booster housing, subdivided into at least two chambers by at least one axially movable wall to which a pneumatic differential pressure can be applied, a control...
7637977 Integrated unit for air treatment in pneumatic systems  
An integrated unit for air treatment in pneumatic systems comprises a box-shaped body provided with an inlet for the air to be treated and at least one outlet for the treated air and holds devices...
7637201 Adjustable hydraulic support cylinder  
An adjustable length cylinder assembly includes a housing and a piston reciprocably mounted within the housing for movement between an extended position and a retracted position. The piston defines...
7634961 Hydraulic circuit for construction machine  
A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce...
7634911 Energy recovery system  
An energy recovery system for a machine is disclosed. The energy recovery system may have a pump configured to provide a flow of pressurized fluid. The energy recovery system may also have a first...
7631590 Hydraulic steering arrangement  
The invention concerns a hydraulic steering arrangement (1) with a supply connection arrangement (P, T), a working connection arrangement (A, B) connectable to a steering motor (5), a steering unit...
7631591 Two stage spool centering mechanism  
A valve arrangement includes a spool movable in first and second strokes. A first biasing member has a first spring constant and a first preload, and a second biasing member has a second spring...
7624574 Piston apparatus, stirling engine, external combustion engine, and fluid device  
A piston apparatus which configures an air bearing by introducing a compressed working media into an inside of a piston, and ejecting the working media from plural holes arranged on a...
7624671 Hydraulic actuator for a servomotor with an end lock function  
A hydraulic actuator for a hydraulic servomotor (4) is disclosed. The hydraulic servomotor (4) is of a kind having at least one defined end position, and has a first chamber (5) and a second...
7621125 Axle driving system  
An axle driving system which houses in a housing thereof a hydrostatic transmission, axles, and a driving gear train for connecting output means of the hydraulic transmission and axles, so as to...
7621711 Hydraulic control system for mobile equipment  
What is disclosed is a hydraulic control system for a mobile equipment, in particular for a wheel or backhoe loader, wherein a shovel is linked to a boom. The angular position of the shovel may be...
7621211 Force feedback poppet valve having an integrated pressure compensator  
The force feedback poppet valve includes a valve body having a main chamber, a first port, and a second port. The force feedback poppet valve further includes a main poppet disposed within the main...
7617919 Drivetrain for a motor vehicle  
A drivetrain for a motor vehicle has a friction clutch for transmitting drive torque for the motor vehicle and has an actuator arrangement for actuating the friction clutch. The actuator...
7617874 Flexible matrix composite actuator for use in subsurface wellbores  
A valve control system for a wellbore includes a fiber composite actuator functionally coupled to a valve operating member and means for controllably charging an interior of the actuator with fluid...
7617760 Valve device  
A control valve device (1) for the control of a consumer (2), in particular of a dual-action consumer, includes a control valve (3) that controls the connection of an admission side of the consumer...
7617759 Precision load positioner with positive weight deviation indication and over-pressure protection  
An apparatus for bidirectionally translating and positioning loads under tension includes a linear hydraulic actuator suspendible from a hoist such as a crane and is useable to support, raise and...
7620522 Diagnostic device for at least one pneumatic valve actuator arrangement  
A diagnostic device for at least one pneumatic valve actuator arrangement, comprises a pressure sensor, a volumetric flow sensor, a control means for producing control signals for the valve...
7614335 Hydraulic system with variable standby pressure  
A hydraulic system is disclosed. The hydraulic system includes a source of pressurized fluid, a low pressure source, and a plurality of actuators. The hydraulic system also includes a plurality of...
7614336 Hydraulic system having augmented pressure compensation  
A hydraulic system is disclosed having a source of pressurized fluid, at least a one hydraulic actuator, and a first valve. The first valve has a first valve element movable relative to a first...
7614226 Hydraulic transmission  
A hydraulic transmission system features a first hydrostatic motor (1) and a second hydrostatic motor (4), which are connected to an output shaft (3) by way of a compound transmission, and which,...
7614337 Rotary radial piston machine  
A rotary displacement machine with radial pistons, comprising a supporting structure, with a main body and a cover, a centrally mounted distributor, a rotating unit consisting of a rotor provided...
7607490 Pneumatic impact tool and method  
A pneumatic impact tool and method includes a cylinder pipe or housing closed with a cover, as well as an impact piston that forms a first pressure chamber between an impact plate and the impact...
7607380 Fluid pressure actuator  
A fluid pressure actuator includes: an actuator body which expands and contracts through supply/discharge of a fluid to generate a driving force; a sensor for detecting a condition of the actuator...
7607381 Control device for a work device comprising a scoop held on an extension arm  
On a work appliance, an extension arm is held rotatably, and a scoop is held rotatably on the extension arm. Actuation of the extension arm and of the scoop is by means of hydraulic cylinders. Each...
7606648 Operator display system  
An operator display system for a material handling vehicle, the material handing vehicle having a material handling device comprising an arm and a material handling implement mounted on the arm,...
7604452 Cantilevered pallet positioner with safety devices  
A pallet positioner includes a support frame that consists of a main upright structure with a pair of spaced, parallel outriggers extending horizontally at ground level. The distal ends of the...
7603941 Hydraulic pump or motor  
The mechanism such as a motor or a pump comprises a cam (10) and a cylinder block (12) which has a plurality of cylinders (14A, 14B, 14) connected to communication orifices (34A, 35A; 34B, 35B)...
7603942 Synchronization cylinder having chambers with different volumes  
A synchronizing cylinder that allows for the synchronized movement of multiple hydraulic mechanism cylinders having different sizes and volumes. In one embodiment, the synchronizing cylinder has a...
7603940 Hydraulic controller arrangement  
What is disclosed is a hydraulic controller arrangement for the pressure medium supply of a hydraulic consumer, e.g., of the rotating gear of a mobile work machine. At low pressure medium flow...
7603854 Pneumatically self-regulating valve  
A pneumatic motor that includes a cylinder, a piston disposed in the cylinder, and a pneumatically-reset pilot valve. In certain embodiments, the pneumatically-reset pilot valve is configured to...
7603856 Heavy-construction machine  
A heavy-construction machine (1) including a working implement (5) having one or a number of arms (6) articulated with regard to the chassis (2) of the machine. An assembly consisting of at least...
7603855 Valve with magnetic detents  
A motor including a piston disposed within a cylinder and a valve configured to control a flow of a fluid into the cylinder. In some embodiments, the valve has a housing, a valve member disposed in...
7600463 Oil pressure supply circuit for industrial vehicle  
A priority flow rate control valve (4) increases a distribution ratio of pressurized oil to a power steering device (1) of a fork-lift track via a power steering oil passage (9) as a differential...
7594802 Large angle sliding valve plate pump/motor  
A pump/motor includes a back plate having first and second fluid ports configured to be differentially pressurized, first and second reaction plates rigidly coupled to the back plate, and a valve...
7594565 Rod brake  
A rod brake includes a housing containing a pressure vessel and a piston intensifier. The pressure vessel has a bearing tube with a bore sized to receive a movable rod. A cavity is provided between...
7594549 Rotating direction switching device for a pneumatic tool  
A rotating direction switching device for a pneumatic tool comprises an air inlet valve and a switch. The air inlet valve is driven to switch the rotating direction of the pneumatic tool by...
7591214 Driving motor controlling device of construction machine  
Provided is a driving motor controlling device of a construction machine, including a driving motor which is included in the construction machine having a swivel joint interposed between an upper...
7591134 Vacuum booster of brake device  
The present invention provides a vacuum booster, which is constructed such that an area with which a cylinder communicates with a port communicating with a reservoir and being open to the cylinder...
7587897 Magnetically sequenced pneumatic motor  
A pneumatic motor having a piston and a magnetically actuated valve. The magnetically actuated valve may be adjacent the piston and, in some embodiments, include a spool valve.
7585158 Piston engine comprising a pulsation-reducing device  
The invention relates to a piston engine comprising a rotatably mounted cylindrical drum (2) provided with a plurality of cylindrical boreholes distributed over the circumference thereof and...