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7726124 Blast simulator with high velocity actuator  
A high velocity actuator, which may be used as a blast simulator, is provided with an actuator cylinder tube having an opening at first and second cylinder ends, and an actuator piston rod slidably...
7721641 Air compression apparatus and method of use  
An air compression apparatus has a frame, a tank, and a motor. A drive mechanism is operably connected to the motor and at least one piston assembly is operably connected to the drive mechanism and...
7721640 Cable operated gas cylinder  
A cable operated gas cylinder comprises: a base tube; a spindle which is inserted at hollow part in said base tube; a cylinder which is mounted within said spindle; a piston dividing the gas-filled...
7717025 Fluid actuator with limit sensors and fluid limit valves  
A fluid actuator with fluid limit valves (550, 551) and adjustable mechanical limits enables the construction of fluid linkages which are able to completely replace mechanical linkages. In a fluid...
7718916 Low impact spot welding cylinder using dual pistons  
A weld cylinder having a dual piston arrangement is provided. The cylinder has a movable retract piston assembly with the piston arranged within the retract piston assembly. The piston supports a...
7714247 Low impact spot welding cylinder using single 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 a...
7713033 Double-acting, duplex pump controlled by two, two position spool valves  
The present invention provides a fluid control system and associated methods. The fluid control system includes a source of a pressurized fluid and a first spool valve having at least two...
7703478 Shifting unit  
In a shifting unit (1) for a vehicle transmission gearbox, the switching unit comprising valves which are connected between with one another by a pressure supply line conduit (58) and by a pressure...
7699585 Swash plate type compressor  
In a swash plate type compressor, refrigerant in a discharge pressure region is introduced into a crank chamber through a supply passage while the refrigerant in the crank chamber is drawn out to a...
7698988 Brake booster for a hand brake  
The invention relates to a brake booster intended to transmit handbrake commands. This booster essentially comprises a plunger (3) able to move axially under the command of the control rod (1). An...
7699135 Integrated hydraulic control system  
A hydraulic system including a control valve and a steering control assembly. The steering control assembly includes a steering control unit and a priority flow divider contained in a single...
7694622 Fluid pressure operated piston engine apparatus and method  
A fluid pressure operated piston engine apparatus generally includes a piston unit, a valve configured to selectively direct pressurized fluid into the piston unit, a valve shifting mechanism, and...
7694623 Tandem pneumatic brake booster  
The invention relates to a tandem pneumatic brake booster (1) for a vehicle. The objective is to prevent a blocking of a booster thrust rod (4) in the maximum travel position. The blocking appears...
7695252 Pump system and pump unit  
A pump system has a base unit and a pump unit. The base unit includes an input part operatively connected to a driving source and a plurality of output parts to which power is transmitted from the...
7690196 Hydraulic actuator having an auxiliary valve  
A hydraulic actuator for a hydraulic servomotor 4 is disclosed. The hydraulic servomotor 4 has a first chamber 5 and a second chamber 6 associated therewith. The hydraulic actuator is connected to...
7685929 Bore sealing telescopic hoist  
The present invention provides a telescopic hoist comprising a series of telescopically arranged tubular sections wherein the tubular sections are made in nitrided steel.
7685927 Hydraulic synchronizing cylinder  
A synchronizing cylinder comprising a large diameter barrel and a small diameter barrel. The barrels are separated by a junction that is not fluidly sealed so that fluid can be communicated between...
7685835 Air conditioning system  
An air conditioning system includes a heat source unit, an air supply device that supplies the outside air to the room as the ventilation air, a water supply type humidifier for humidifying the...
7685925 Intensifying cylinder  
An intensifier is operable to supply force and includes a housing defining a cavity. A ram is slidably positioned within the cavity and partially extends from the housing. The ram is moveable...
7685926 Negative pressure booster  
In a negative pressure booster (1) of the present invention, at the time of performing a usual braking operation in a low deceleration region, a force attributed to the pressure difference between...
7681487 Tandem axial piston pump unit  
A hydraulic machine (60, 70) comprising a housing (12, 14, 16) and at least first and second hydraulic units. Each unit comprising a cylinder block (36A, 36B) located in the housing and having...
7681486 Arrangement in connection with an oscillator cylinder  
An arrangement in combination with an oscillating cylinder (1), whereby the arrangement includes a working valve (10) of cylinder (1) to transmit pressure medium into cylinder (1), impulse valves...
7681490 Drive device  
The invention relates to a drive device for a piston pump of a braking system of a vehicle having at least one piston element displaced in the longitudinal direction in a housing between an upper...
7677871 High-efficiency, large angle, variable displacement hydraulic pump/motor  
A variable displacement hydraulic/pump motor has a yoke with a pair of shafts aligned to define a yoke pivot axis and connected to a valve plate therebetween having intake and discharge apertures....
7677035 Control system for a hydraulic servomotor  
A control system for a hydraulic servomotor (13) is disclosed. The control system comprises an electro hydraulic actuator (2) comprising a number of valves (9, 10, 11, 12, 18) for controlling fluid...
7677153 Booster and brake control device fitted with this booster  
A device including a master cylinder driven by a control member, an enclosure for a pneumatic booster having a rear chamber separated from a front chamber by a piston, first and second balancing...
7677208 Radial rotary engine with energy storage  
The present invention is directed to a rotary engine power transmission system for use in vehicular as well as other applications. The power system includes a rotary engine or pump, which may be...
7677154 Control unit for rotor blade adjustment  
In an electrohydraulic control unit for rotor blade adjustment of a wind farm via a hydraulic cylinder, the hydraulic cylinder has one piston chamber and one piston rod chamber. Via an inflow valve...
7673554 Tie rod-type booster comprising a reinforced sealing ring  
Pneumatic brake booster (10) for a motor vehicle, comprising a moving internal partition (14) provided with a cup (38) covered by a sealing diaphragm (42) connected to the inner periphery of the...
7674084 Hydraulically cushioned backhoe boom bumper and travel limiter  
A system is used with a boom pivoted on a frame about a horizontal pivot axis between raised and lowered positions by a first fluid ram joining the frame and the boom. A releasable locking...
7669514 Device to guarantee the sequence of movement of at least two fluid-actuated displacement units  
A device to guarantee the sequence of movement of at least two fluid-actuated displacement units. A primary displacement unit includes a cylinder (Z) with a retractable and extendable piston rod...
7669515 Magnet type rodless cylinder  
A pair of cylinder holes 10 are formed in a cylinder tube 2 in the axial direction, a slit 25 is formed between these cylinder holes, and an iron plate 22 is inserted in the slit covering the whole...
7665431 Drive piston assembly for a valve actuator assembly  
A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable...
7665432 Valve actuation system and method of driving two slave pistons with one master piston  
Apparatus and methods for hydraulic valve actuation of engine valves are disclosed. An exemplary embodiment of the present invention may include a plurality of slave piston assemblies that impart...
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...