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Patent Searching and Data


Matches 701 - 750 out of 2,295

Document Document Title
JP2008164174
To provide a control device for a variable displacement hydraulic motor capable of preventing the stall of a motor even at the occurrence of such trouble that a spool of a pressure compensation valve of the control device is stuck in a n...  
JP2008151142
To provide a hydraulic motor having simplified means for securing control function.The hydraulic motor with a rotating shaft coupled to an alternately linearly displacing piston comprises a casing 12 enclosing the piston 24 and an invert...  
JP2008144720
To provide a variable stroke characteristic engine improving space efficiency furthermore to contribute to compact of the engine.The variable stroke characteristic engine comprises a control shaft 11 supported by an engine body (crankcas...  
JP2008141934
To efficiently generate electric power making use of daily movements.A tank 1 and a tank 2 for liquids, which deform by weighting are arranged near a heel within a shoe, and around a root of a big toe of a foot to produce flow of the liq...  
JP2008138647
To provide a slewing gear efficiently rotating even in a condition where a flow rate and pressure greatly change.A rotor 32 is arranged in a casing 31 in a concentric state, and a raised part 31a is formed on the inside wall of the casin...  
JP2008133801
To provide a hydraulic device reducing friction and smoothing slide between a plunger and a plunger hole provided in a cylinder block, and preventing eccentricity of the plunger in the plunger hole.The hydraulic device is provided with g...  
JP2008128222
To provide a swash-plate type hydraulic rotating device of which the engagement-insertion hole of a piston for inclinatorily rolling a swash plate, is not deformed by the attachment of a rotary shaft bearing of a casing.The swash-plate t...  
JP2008121614
To provide a dual speed swash plate motor capable of reducing wear generated by a tilted piston and a cylinder hole for the tilted piston, improving durability, and extending lifetime.This motor is provided with the tilted piston 17 capa...  
JP2008101627
To make a spool valve type gerotor motor bear lateral load acting on an output shaft without dropping volume efficiency, and achieve miniaturization and reduction of number of components.The gerotor motor 11 makes working fluid flow in f...  
JP2008088953
To enable variable quantity to be freely set in a variable stroke characteristic engine capable of varying movement stroke of a piston.In the variable stroke characteristic engine, a planetary gear mechanism PL is connected between a van...  
JP2008082173
To prevent interference of a vane with a housing by receiving the maximum load generated on a control shaft between a housing bearing part and a vane shaft, in a variable stroke characteristics engine varying the moving stroke of a pisto...  
JP2008082177
To provide an engine with variable stroke characteristics having a piston and a crankshaft connected to a control shaft through a variable stroke link mechanism, operating the variable stroke link mechanism by driving the control shaft w...  
JP2008082175
To provide an engine with variable stroke characteristics having a piston and a crankshaft connected to a control shaft through a variable stroke link mechanism, operating the variable stroke link mechanism by driving the control shaft w...  
JP2008082321
To change motion of fluid with a pressure into circular motion, and change every motion where a biased fluid motor acts on into the circular motion.A rotary gate valve is decentered and is housed in a gate frame 2. A rotor is decentered ...  
JP2008082176
To provide an engine with variable stroke characteristics having a piston and a crankshaft connected to a control shaft through a variable stroke link mechanism, operating the variable stroke link mechanism by driving the control shaft w...  
JP2008075456
To provide a brake device of friction type capable of preventing generation of friction when releasing brake.This brake device is provided with a disc plate 21 rotating together with a cylinder block 3 and being movable in the axial dire...  
JP2008069732
To reduce air consumption by efficiently using air without waste from the beginning and thereby improve air followability.An air motor 2 comprises a cylinder 10 having a cylindrical space S, a rotor 11 rotatably provided at an eccentric ...  
JP2008062691
To enhance the transmission efficiency of HST formed by a hydraulic pump body and both hydraulic motor bodies in a hydraulic drive type working vehicle in which a front side hydraulic motor body for operatively driving a front side drive...  
JP2008062692
To provide a wheel motor device capable of enhancing design freedom regarding a connection structure of an operation oil pipe between hydraulic pump bodies arranged with a space.At least one of first and second operation oil passages for...  
JP2008064082
To eliminate a clearance, since the clearance is inevitably formed between a rotor and a rotor frame, and between the rotor and the rotor.A micromotion tip part 1 is formed of two pieces or more, and both rotors are formed in the same sh...  
JP2008057343
To enhance contamination resistance and seizure resistance while increasing sealing effect between a piston and the inside wall of a cylinder.A piston member 31 is swingably connected to one end of a piston rod 32 through a universal joi...  
JP2008057342
To prevent hydraulic oil from leaking out of the connected portion between a cylindrical plate and a cylinder to the outside when the cylinder is slid on the cylindrical plate.The head part 40A of a cylinder 40 is formed in a generally s...  
JP2008057344
To eliminate insufficient rotating force and energy loss even if the pressure and displacement are varied.When a force matching a pressure P in a cylinder oil chamber 4b at the bottom dead center is larger than the spring force of a spri...  
JP2008051118
To make small the size of a bent axis fluid pressure unit wherein a pushing and removing quantity is adjustable.On a flame 12, a fluid pressure module containing one pair of shafts 25, 26 is rotatably supported, two yokes 14 and 16 are p...  
JP2008051072
To smooth a motion when moving a piston in an inside of a cylinder hole while a great load acts thereon, by simple working, and to enhance abrasion resistance or the like.Micro recesses 21 forming a gently sloped face 21a from the deepes...  
JP2007177764
To provide a swash plate piston motor supplying a bearing part of an motor inside with appropriate pressurized oil as lubricating oil.The swash plate piston motor has a concave part 60 opening at a rear side of an output rotary shaft 50 ...  
JP2007170412
To provide a hydraulic turbine of high hydraulic turbine efficiency constructing a runner enclosing a pressure receiving surface body of large flowing water pressure receiving area and a casing composed of a tube having an inner surface ...  
JP2007162534
To keep vibration generated in a drive force transmitting system between a piston and an oscillating plate mutually converting reciprocating motion and rotational motion minimum.The oscillating plate 22 fixed on an oscillating rod 21 and...  
JP3958113
To provide a swash plate type fluid pump/motor capable of preventing pulsation by a working fluid, and having a piston allowing its weight to be reduced and excellent in specific gravity balance. This swash plate type fluid pump/motor is...  
JP3954944
To provide a swash plate angle operating lever for a hydraulic infinite variable speed transmission for operating a swash plate of a hydraulic pump in the hydraulic infinite variable speed transmission having the hydraulic pump and a hyd...  
JP3950614
To provide a gear pump or a gear motor capable of easily inserting a positioning pin into a positioning hole by a nonprofessional, and being assembled with high workability. Inner diameters of first positioning holes 18 and 19 formed on ...  
JP2007107493
To provide a radial piston type fluid rotary machine provided with a shoe capable of surely preventing an edge part of the shoe from biting into a cam surface and scratching on the cam surface.An oil grove 26 is formed on a slide surface...  
JP2007100317
To improve a hydraulic circuit, including a structural change of an feed pump and a revolving motor, so as to increase the efficiency of a hydraulic system, during excavation work in the state of abutment on the lateral surface of a ditc...  
JP2007071030
To serviceably utilize pressure water as power generation energy.This hydraulic power generation system 10 has a driving device 18 driving a generator 16. The driving device 18 has a plurality of piston-cylinder mechanisms 24A to 24D dri...  
JP2007071195
To solve a problem wherein fluid pressure receiving area is constrained in radius dimension of a rotor main body, because a sinking position of a vane body attached to a rotor or an oscillating part after action depends on a system chang...  
JP2007056685
To easily manufacture a swash plate capable of tiltably operating a variable displacement hydraulic motor.The rear surface 32 of the swash plate 30 is formed in a stepped surface with steps 34 and 35. A pair of rear surface portions 32a,...  
JP3915223
To reduce a noise and a vibration by reducing the pressure variation width of the oil enclosed in filing space, without hurting the compact property, in a gear pump or a motor. In a gears 1 respectively, an additional machining is applie...  
JP3913399
To improve performance of an oscillation type hydraulic pressure equipment by providing a simply-configured vane assembled body, which is composed of a rotor shaft and a vane with satisfactory dimensional accuracy and assembling accuracy...  
JP3913920
To improve the workability of assembling and to miniaturize a device by using the components of a tilting and rotating actuator in common and reducing the number of part items. The casing main body 2 of a casing 1 is provided with one ti...  
JP3909444
To position an overlapping part of an annular pressure chamber with adjoining fluid port of spider form in the proximity of the overlapping part of the fluid port of spider form with static valve passage to provide more desirable axial p...  
JP3911211
To provide a hydraulic motor capable of certainly eliminating the friction resistance of a brake disc when the brake is disengaged. The hydraulic motor 1 is composed of a plurality of pistons 6 reciprocating with liquid pressure, a cylin...  
JP3909988
To prevent erosion of a valve plate in a rotary swash plate type piston pump. In the rotary swash plate type piston pump wherein a surface layer which is brought into slide contact with a cylinder block is formed of a material having a h...  
JP2007023927
To provide an installation structure for a swash plate support stand inhibiting looseness of the swash plate support stand and enabling to easily attach and detach the swash plate support stand on and from a casing.The casing 6 of a pist...  
JP2007022197
To provide a wheel motor device capable of directing a hydraulic oil port and an oil port to proper directions respectively, in a wheel motor device with a hydraulic motor unit having a motor housing provided with the hydraulic oil port,...  
JP2007009801
To miniaturize a hydraulic motor by providing a spring for a brake pressing a brake piston against a flange at an outside of a swash plate and a rotation stopping pin of the brake piston on a same circumference.A plurality of spring hole...  
JP3894253
To provide a brake energy regeneration device which realizes the high speed of the rotation frequency in the pump operating time of a hydraulic pump/motor, and realizes the small type and the light weight of the hydraulic pump/motor. In ...  
JP3894463
To surely prevent the proximal end of a piston from being separated out of a piston shoe while allowing them to slightly slide, relative to each other. A thread part 20A on the distal end side of a connection rod 20 is fastened in a thro...  
JP2006336561
To provide a variable capacity type swash plate type pump-motor capable of preventing running-out of oil in a contact part accompanying with sliding of a control member for controlling tilting rotation of a swash plate and letting air mi...  
JP3889588
To provide a variable displacement type hydraulic rotary machine capable of stably holding its swash plate in the maximum and the minimum tilting position and allowing enhancement of the processing easiness. The hydraulic rotary machine ...  
JP3889592
To shorten an axial dimension of a casing and to simplify a drilling process of an oil passage for supplying oil liquid. Inclined rotation support members 24, 40 are fitted into fitting recess parts 6, 8 of a rear casing 5 and a front ca...  

Matches 701 - 750 out of 2,295