Match Document Document Title
7574986 Variable compression ratio device of internal combustion engine  
A variable compression ratio device includes a piston having a piston inner part and a piston outer part. The piston outer part integrally includes ear parts facing opposite ends of a piston pin...
7574859 Monocylindrical hybrid two-cycle engine, compressor and pump, and method of operation  
The monocilindrical hybrid comprises a boosted by the reciprocating air compressor two-cycle engine and a hydraulic pump. The pump plunger fastened to engine piston and located coaxially with the...
7574860 Damper valve and hydraulic power steering apparatus  
A damper valve includes first and second chambers separated by a partition wall, hydraulic oil flowing from the first chamber to the second chamber via a supply path, and returning to the first...
7574952 Motor fluid drive, especially for rotary, pivotal or linear drive units and corresponding method  
The invention relates to a drive, especially for rotary, pivotal or linear drive units, comprising a working piston (16), housed in a cylinder (12) of a housing (14), impinged by fluidic pressure...
7572114 Structure of pump  
A pump includes a pump housing and an end cap, which is attached to the pump housing at the top and has an oil suction port at one end and an oil relief port at one lateral side. A connecting cap...
7562616 Device for the emergency lowering of a load-carrying means for a stacker truck  
Device for the emergency lowering of a load carrying means for a stacker truck, in particular a reach-type forklift truck, with a valve arrangement accommodated in a valve block, via which the...
7562615 Hydraulic working machine  
A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional...
7559523 Dual-cylinder blowout preventer operator system  
A hydraulic blowout preventer operator comprises a first piston rod coupled to a closure member. The operator further comprises a first operator housing coupled to a bonnet and a head. The first...
7559271 Working machine  
Of a plurality of hydraulic signals output from an operating device, a hydraulic signal is input into a control valve serving as a hydraulic control device without conversion, and particular...
7555978 Hydraulic actuating device  
Hydraulic actuating device comprising a first and a second hydraulic actuator, which actuators have a first and a second connection for the supply and discharge of hydraulic fluid, which...
7555898 Control system and control method for fluid pressure actuator and fluid pressure machine  
A wheel loader automatically adjusts the bucket angle with respect to the ground. The wheel loader includes a hydraulic pump, a tilt cylinder and a tilt valve, a detector which detects that the...
7552671 Cylinder with fiber optical position sensing device and method  
An apparatus for sensing movement of a first object relative to a second object. The apparatus includes indicia markings formed on the first object and a sensor capable of reading the indicia...
7553120 Hydraulic control unit for the arms of a grip and grip including said hydraulic unit  
A hydraulic grip-control unit provided with at least two gripping arms driven hydraulically to seize loads while cooperating with a striker arm of the grip with the control unit in use being...
7547198 Double-headed piston type compressor  
A double-headed piston type compressor forms a first compression chamber and a second compression chamber for compressing gas. The compressor has rotary shaft having an inner chamber that...
7543525 Automobile clutch booster  
A clutch booster usable for an automobile having a clutch. In one embodiment, the clutch booster includes a booster member coupled with the clutch for engaging or disengaging the clutch from the...
7543603 Three-way, two-position in-tube solenoid gas valve assembly  
A tube defines a cavity. Normally-open fitting (2) and normally-closed fitting (3) are respectively fitted into the tube to form ports (34),(35) having seats (40),(13). A body secured to fitting...
7543449 Hydraulic system for linear drives controlled by a displacer element  
The invention concerns a hydraulic system for linear drives with a differential cylinder, in particular for mobile machines which through the use of displacement-control of the drives avoids the...
7540230 Three-way poppet valve for work exchanger  
A three-way two-position poppet valve (10) comprising a housing (12) with a generally cylindrical valve chamber (14), a first (20) and a second (16) port with coaxial 1 valve seats (26, 28) at the...
7540231 Control valve device for the control of a consumer  
A control valve device (1) for the control of a dual-action consumer (2) has a control valve (3) that controls the connection of a pressure fluid line (6a) that forms the admission side of the...
7536943 Valve and auxiliary exhaust system for high efficiency steam engines and compressed gas motors  
A steam engine with improved intake and exhaust flow provided by separate pairs of intake and exhaust ports located at both ends of a steam drive cylinder. A slide valve located adjacent to the...
7530300 Hydraulic double ram lifting platform  
The invention relates to a hydraulic double ram lifting platform with two cylinder tubes (3), moving together in the vertical direction (17), a hydraulically-operated lifting unit (18), for each...
7530301 Self starting vibrator  
Briefly, the invention comprises a vibrator with an on-demand start-up system, that inhibits fouling the atmosphere, with one embodiment of the invention including an integral non-fouling start-up...
7530613 Apparatus for connecting and disconnecting two objects  
An apparatus for connecting and disconnecting two objects comprises: a housing formed as a hollow type, and having one closed end to which a first object is connected and another opened end; a...
7526992 Variable force rate vacuum booster  
A variable force rate vacuum booster including a reaction disk having an input surface and an output surface, the reaction disk being formed from a deformable material, an input rod position...
7527483 Expansible chamber pneumatic system  
An expansible chamber pneumatic system, for example a fluid pump system, includes two or more double-acting diaphragm pumps, each with symmetrical left and right pump housings, each housing...
7526993 Fluid pressure cylinder apparatus having throttle valve  
A cylindrically shaped valve rod is housed in a valve hole formed in a cylinder body in a manner so as to be rotatable around a center axis line, and a connecting hole having a first hole opening...
7520208 Drive device comprising a position controller  
A drive device comprises a fluid driven drive (2), which defines a drive space (8), in which at least one drive piston (14) is located which is able to be linearly shifted by fluid actuation and...
7516757 Power beyond steering system  
A fluid controller (15a) in a multiple-input hydrostatic power steering system includes a check valve assembly (101), having a first fluid passage (111), defining a check valve seat (105) and a...
7516614 Hydraulic arrangement  
An improved hydraulic arrangement is provided for a spring support system. The arrangement comprises a hydraulic cylinder, a hydraulic reservoir, a hydraulic fluid feeder, a hydraulic accumulator,...
7518100 System and method for detecting a position of a movable element  
A system and a method detect a position of a movable element within the interior of the compartment via a light source and/or a light sensor. The light sensor is connected to a platform and/or to...
7513188 Force-based power steering system  
A power steering system includes a power cylinder, an accumulator, a reservoir, a pair of valves, and a pair of pressure transducers. The system selectively fluidly couples the accumulator and/or...
7513189 Hydrostatic piston machine with two hydraulic circuits  
The invention relates to a hydrostatic piston engine comprising a cylinder barrel (43) inside of which a first group of cylinder bores (53.1) and a second group of cylinder bores (53.2) are made....
7509905 Pressure control valve having intrinsic mechanical feedback system  
The present invention describes, generally, a method and system for controlling the dynamics of an actuatable load functioning or operable within a servo or servo-type system, wherein the dynamics...
7506509 System for converting thermal to motive energy  
The invention relates to a system for converting thermal to motive energy. Said system comprises at least one pressure vessel, having at least one upper injection orifice for a warm and/or cold...
7503173 Control devices for swashplate type variable displacement piston pump  
Improvements in trunnion shaft-controlled swashplate axial hydraulic piston pumps as well as hydraulic systems used in hydrostatic transmissions utilized. e.g., in zero-turn-radius (ZTR) wheeled...
7503251 Load balance adjusting method and equipment of lifting jacks, and jack-up equipment  
A load balance is adjusted to be appropriate even if shared loads of lifting jacks are fluctuated from an initial setting state caused by cumulative errors of suspending rods. It is a load balance...
7500424 Hydraulic machine having pressure equalization  
A hydraulic machine includes a valve plate, with first and second fluid ports in a surface thereof. A cylinder barrel is rotatably coupled to the valve plate. A plurality of cylinders is formed in...
7497523 Pressure locking master cylinder  
A pressure locking master cylinder including a fluid reservoir for storing a hydraulic fluid, a housing, a piston slidably received within the housing and defining a working chamber and a blocking...
7497363 Pneumatic fixing machine  
A pneumatic fixing machine has a piston (30) sliding within a cylinder (33), a first valve (5) movable between opening (L) and closing (D) positions, in correspondence of which the first valve...
7496441 Features of main control for a power machine  
The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based...
7487706 Device for controlling a hydraulically driven motor  
The present invention relates to an arrangement for controlling a hydraulically driven motor (2), forming part of a hydraulic system in which hydraulic fluid under pressure forms a main flow...
7487707 Hydraulic valve assembly with a pressure compensated directional spool valve and a regeneration shunt valve  
A hydraulic circuit controls flow of fluid between first and second ports of a hydraulic actuator, such as a cylinder/piston arrangement and each of a supply conduit and a tank return conduit. The...
7484570 Percussion device  
Percussion device including a machine housing (1), a forwards and backwards movable percussion piston (2) in the machine housing, and a reciprocatingly movable tubular valve body (6) inside the...
7481268 Collar assembly for pump thrust rod used to activate microswitch valve on chemical injection pump  
A collar assembly for inclusion with, or for a retrofit of, a chemical injection pump and method for manufacturing same. The collar assembly secures to a thrust rod of the chemical injection pump...
7481052 Fluid circuit with multiple flows from a series valve  
A circuit or system having application for operating an implement or attachment for a power machine is disclosed. The circuit includes a first or primary valve, a second or auxiliary valve...
7481149 Bimanual control valve  
In a control valve for use in both-hand operation provided with an AND valve (20) and a shuttle valve (21) connected to a main input ports (11a and 11b), a main switching valve (23) connected...
7481161 Plunger-cylinder assembly  
A plunger-cylinder assembly for a press including a plunger which is accommodated at least in part in a cylinder while separating the interior of the cylinder into two partial chambers along the...
7478530 Hydraulic circuit for working machine  
A hydraulic circuit for a working machine includes hydraulic actuators which respectively drive a plurality of kinds of working devices and which are driven by a drive circuit having circuit...
7478581 Method of ameliorating an end of stroke effect in an implement system of a machine and machine using same  
A method of operating a work machine includes moving a work implement via a first actuator having a range of motion, and ameliorating an end of stroke effect on a second actuator if an end of...
7475538 Digital Hydraulic system  
A digital hydraulic system including a hydraulic source, a housing and a transtatic bridge. The transtatic bridge being substantially contained within the housing. The transtatic bridge being in...