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8689832 Volume booster with reduced noise trim  
A fluid flow control device having a body having a inlet connection, an outlet connection, a discharge port and a booster module disposed within the body. The booster module including a control...
8689551 Hydrostatic transaxle  
A hydraulic drive unit having a center section for a hydraulic pump and hydraulic motor mounted in a casing. The center section includes a cylindrical protuberance for locating the center section...
8683720 Hydraulic suspension hitch system  
The present disclosure provides a hitch suspension system that reduces a transfer of energy (e.g., provides a smoother ride) between two bodies hitched together, such as between a towing vehicle...
8684037 Proportional poppet valve with integral check valve  
A poppet valve assembly includes a body having a first axial end portion and a second axial end portion. The first axial end portion includes a tapered surface adapted for sealing engagement with...
8683911 Linear actuator  
A linear actuator includes a guide block constituting a guide mechanism. In the guide block, a pair of installation grooves are formed in a lower surface facing toward a cylinder main body. Ball...
8683795 Control valve for a hydraulic refueling boom system  
A method for controlling fluid flow. A valve system may be kept in an open state in response to a fluid being at a selected level of pressure at any of a plurality of ports in a valve. The valve...
8683910 Hydraulic cylinder with piston valve assembly  
A hydraulic cylinder includes a cylinder assembly having a cylinder, defining an inner hydraulic chamber and being for reciprocating receipt of a piston and piston rod therein; a piston rod...
8684141 Lifting platform for vehicles and other objects  
A device for lifting vehicles and other objects may include a first tubular body and a second tubular body. The second tubular body is mobile in relation to the first tubular body in a...
8677885 Floating piston actuator for operation with multiple hydraulic systems  
A floating piston actuator for use with multiple hydraulic systems includes a housing and a piston assembly. The piston assembly includes an elongate shaft or ram, at least one secured piston...
8677884 Hydraulic pump/motor and fan driving device  
A hydraulic motor 10 of the invention includes a detected unit 52 formed on an outer circumferential surface of a cylinder block 14 and a rotation sensor 50arranged opposed to the detected unit 52...
8677886 High response hydraulic actuator  
A hydraulic actuator for pump control is disclosed. The hydraulic actuator includes two hydraulically isolated chambers for actuation in one direction and two hydraulically isolated chambers for...
8671989 Drive arrangement for valve devices  
In order to improve a drive arrangement (15) for valve devices (1) comprising a closing member (3), comprising a movable drive element (6) for making an operative connection with the closing...
8671822 Fluid driven reciprocating linear motor  
A reciprocating linear motor powered by one directional fluid flow is provided, having small external diameter, optimized for length, with few moving parts and effective seals, low mass and thus...
8671986 Hydraulic controller  
A pair of supply/drain pipes continuous with an actuator are respectively communicable with a pair of oil sumps respectively through an intermediation of a pair of extended paths. The pair of oil...
8671824 Hydraulic control system  
The invention relates to a hydraulic control arrangement for supplying a pressure medium to at least one consumer. The forward line and/or the return line of the consumer comprises a distributing...
8671823 Pneumatic brake servo  
A pneumatic brake servo which can be acted on by a pneumatic differential pressure is described. The brake servo includes an actuable input member comprising a valve piston, an output member for...
8667884 Hydraulic valve device  
A Hydraulic valve device includes a first engine port and a second engine port to a double acting hydraulic motor, and a pump, a hand valve, which is arranged such that it connects the engine...
8667885 Actuating device for a shift element of a transmission device which can be applied with an actuating pressure  
An actuating device for a shift element of a transmission which is acted upon by a hydraulic actuating pressure (p_B1) and comprises a valve device. To vary the actuating pressure (p_B1), the...
8667886 Variable output hydraulic actuator system  
Methods and apparatuses of generating a dynamic variable average flow applied by a hydraulic system of a vehicle.
8661809 Method for operating a hydraulic system, and hydraulic system  
A method for operating a hydraulic system has at least one supply device, in particular a hydraulic pump (3) supplying different hydraulic consumers. A synchronizing device (33, 35) ensures that,...
8666582 Apparatus for improving steering sensitivity of vehicle  
A vehicle steering feel improving apparatus is provided for a vehicle, wherein the vehicle is capable of running with a road wheel driven by a driving force from a power source. The vehicle...
8666605 Securing the assistance torque by means of an estimator of the force on the rack  
A method for securing the assistance torque (15) supplied by an electric assistance motor (8) in a motor vehicle power steering system includes the steps of: estimating the force on the steering...
8666609 Work vehicle  
A tractor includes booms, lift cylinders, a hitch, dump cylinders, a magnetic valve, a speed-up circuit, and a speed-up restricting arm. The lift cylinders swing the booms upward and downward by...
8662035 Oil pressure control system for switchable valve train components  
An oil control valve is disposed in fluid communication between an oil supply gallery and an oil control gallery of an oil control system. The oil control valve has a first position that prevents...
8656711 Hydraulic circuit for operating a tool  
A hydraulic circuit for operating a tool is provided that is particularly useful in construction equipment such as an excavator, crane, wheel loader, drilling machine, or others. Furthermore, a...
8657589 Operating method for a hydraulic machine  
A hydraulic machine has at least one working chamber (11) of cyclically changing volume, and low-pressure and high pressure valves (15, 13) to control the connection of each of the at least one...
8650868 Control apparatus, control method, and control program for elastic actuator drive mechanism  
There is provided an abnormality determination unit that determines whether or not an output measurement unit is abnormal, in order to determine abnormality of the output measurement unit. When...
8650778 Hydraulic drive device for hydraulic working machine  
A hydraulic drive system realizes a jack-up operation without arrangement of a flow rate control valve and center bypass selector valve. The hydraulic drive system has first and second hydraulic...
8651826 Volume control valve  
A capacity control valve capable of enhancing the function of discharging liquid refrigerant in a control chamber during startup of a variable capacity compressor, and improving the control speed...
8640600 Hydraulic cylinder cushion device with check ring  
A hydraulic cylinder cushion device installed in a hydraulic cylinder provided, in which a rod performs reciprocating movement in a cylinder tube, and which discharges high-pressure hydraulic...
8640601 Output system for a plurality of masses  
An output system (100) for the extraction and/or output of plural masses (220), comprising a cylinder unit (300) made up of at least two double-acting cylinders (301, 304) each having a piston...
8640450 Compressed fluid motor  
A compressed fluid motor has a plurality of cylinders with a piston and a piston rod. A main bearing is concentric with a crankpin and coupled to a shaft. Compressed fluid on the piston pushes on...
8640599 Brake booster having atmosphere chamber void of springs  
A brake booster includes an atmosphere chamber, a working chamber, a valve assembly, and an air passageway. The atmosphere chamber includes an air inlet, and the working chamber is in fluid...
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...
8635939 Apparatus, a control circuit and a method for producing pressure and volume flow  
An apparatus comprising: a series of units, each being capable of producing a volume flow; a first channel for supplying hydraulic fluid into the apparatus; a second channel for supplying...
8631651 Hydraulic system thermal contraction compensation apparatus and method  
An apparatus for compensating for fluid contraction in a hydraulic powered telescoping boom may include a monitor determining the elevation angle of the telescoping boom, a supply of hydraulic...
8631826 Volume booster with stabilized trim  
A fluid flow control device includes a body having an inlet connection, an outlet connection, and a discharge port. A supply path extends between the inlet connection and the outlet connection and...
8631735 Pneumatic booster  
There is provided a pneumatic booster, comprising: a front shell; a rear shell; a housing formed as that respective openings of the front shell and the rear shell are integrally connected to each...
8629369 Low impact spot welding cylinder using single or double piston  
A weld cylinder having a single piston arrangement is provided. The cylinder has a movable retract piston assembly with the piston arranged within the retract piston assembly. The piston supports...
8607559 Fluid bypass system  
A method for actuating a bypass control valve assembly of a fluid system includes receiving a first input signal at an electronic control unit. The first input signal is related to an active...
8607917 Electrically-operated hydraulic actuator unit and hydraulic four-wheel-drive work vehicle  
Provided an electrically-operated hydraulic actuator unit that includes an electrically-operated motor controlled by a control apparatus and actuating a volume adjusting mechanism through...
8607821 Stack valve  
A stack valve 1 includes a boom direction switching valve 11 (first direction switching valve) connected to an unloading path 21 and a service valve 13 (second direction switching valve) connected...
8596431 Pneumatic cylinder with a self-adjusting end position damping arrangement, and method for self-adjusting end position damping  
A self-adjusting end position damping arrangement includes a stroke space 9 which is delimited by a movable stroke element 7, 24 and a part of the pneumatic cylinder 1, with the stroke space 9...
8596061 Decoupled inline hydraulic booster  
An in-line brake system with a hydraulic booster includes a master cylinder defining a cylinder bore, a master cylinder piston located within the cylinder bore, a transfer piston located within...
8596186 Arrangement for hydraulic eccentric adjustment to set a predefined displacement for a hydrostatic motor  
An arrangement for a hydraulic eccentric adjustment for setting a predetermined displacement volume in a hydrostatic motor and, in particular a radial piston motor (1). The arrangement has an...
8596608 Sub sea hybrid valve actuator system and method  
A sub sea valve actuator system including a piston and cylinder assembly and a return spring arranged in an actuator housing, a hydraulic pump and electric motor assembly associated with the...
8584453 Hydrostatic circuit lock valve components, circuits, systems, and method  
Methods and systems for operating a cylinder lock valve to control fluid flow to a hydraulic cylinder operating a drilling rig sub-system. The lock valve 1) allows fluid flow through the valve if...
8578837 Pressure unloading valve to cushion a pneumatic cylinder  
The pressure in the downstream side of a pneumatic cylinder's piston (1g) is allowed to exhaust. At a certain point, the downstream exhaust is blocked, causing the pressure to rise against the...
8578713 Hydraulic soft start system  
A hydraulic soft-start system includes a first flow valve in fluid communication with a pressure source and an inlet of a motor. A first restricting orifice is disposed between the first valve and...
8578708 Fluid-flow control in energy storage and recovery systems  
In various embodiments, compressed-gas energy storage and recovery systems feature one or more valves, which may be disposed within end caps of cylinder assemblies in which gas is expanded and/or...