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Patent Searching and Data


Matches 601 - 650 out of 2,288

Document Document Title
JP2012067749
To provide a hydraulic system of a multiple circuit type piston machine having flexibility improved more than a conventional technology, and to provide an energy-saving type hydraulic system for a special purpose.One high pressure connec...  
JP2012057589
To lubricate a counterpart member using a drain oil when a hydraulic motor is attached to the counterpart member and to hold the drain oil in a motor housing when the hydraulic motor is detached from the counterpart member.An oil path 38...  
JP2012047277
To provide a vane type generator that can be made compact while achieving stable rotation.The generator is so structured that an output shaft as a rotary shaft and an input shaft as a rotary shaft are joined together, and has a ball bear...  
JP2012041978
To provide an electro-hydraulic drive system for a work machine, allowing efficient operation by fluid pressure and electricity, the system including a hydraulic motor for driving a structure of the work machine and an electric motor, an...  
JP2012036774
To provide a motor-operated hydraulic actuator unit and a hydraulic four-wheel drive working vehicle which are capable of preventing the volume of a hydraulic actuator from being involuntarily changed by an external force applied to a vo...  
JP2012036873
To provide a hydraulic motor that strikes a balance between the suppression of slip at a stop and the improvement of start efficiency at a start.A port 100 communicates with an oil chamber 100a facing the right end surface of a valve pla...  
JP2012031758
To provide a hydraulic pump motor capable of reducing erosion against a cylinder bore inner wall or a piston generated when an ejection port and a cylinder port are communicated with each other via a commutation hole or the like.In the a...  
JP2012013088
To provide an axial-piston machine that continues to keep a function of a brake device when an entrained tooth alignment has a fail.In addition to the entrained tooth alignment provided in a region of a cylinder block collar, additionall...  
JP2012007509
To prevent occurrence of scoring/seizure and the like, by inhibiting wear of contacting area between respective cylinder holes of a cylinder block and tapered pistons.On a surface side of a cylinder block 6, a surface treatment layer 15 ...  
JP2012002109
To provide a pump motor which can reduce costs and raise assembling properties of a vane, and to provide a driving force distribution device for a vehicle.A vane motor 4 includes: a rotor 8 which is connected to a rear axle shaft not to ...  
JP2011252414
To achieve a structure capable of keeping down a surface temperature of an oil motor 1 without decreasing cargo handling capacity of a pump body rotated and driven by a drive shaft 22.An orifice 37 is provided between a periphery of an o...  
JP2011241715
To facilitate assembling work in a configuration enabling high capacity without increasing a radial dimension of a cylinder block, in a swash plate type hydraulic machine.A hydraulic pump 12 and a hydraulic motor as a swash plate type hy...  
JP2011226456
To promptly solve the problem of clearing away the phenomenon of abnormal wear in light of attempting to bring a highly efficient pendulum type wave power generation system into an early practical use, as is encouraged by the occurrence ...  
JP2011220341
To provide a rotary fluid pressure device for preventing damage to a brake pin and a star gear due to an overload applied to the star gear.The rotary fluid pressure device 20 includes a gerotor gear set 24 having a ring gear 28 and a sta...  
JP2011214429
To provide an effectively cooled valve plate for a hydraulic motor and a hydraulic pump.A valve plate 5 is used for a swash plate motor 1 equipped with a motor shaft 4 and a cylinder block 3 inside a motor housing 2, and has: a sliding s...  
JP2011202661
To provide an inexpensive high-performance device utilizing a chamber-piston combination structure.The piston-chamber combination structure includes a long-form chamber having a long axis and having a first cross section at a first longi...  
JP2011163260
To provide a hydraulic rotary machine for reducing a risk of seizure between a cylinder hole and a piston by suppressing misalignment between a rotational center axis α of a cylinder block 5 and a rotational center axis β of a center s...  
JP2011157912
To achieve reduction in cost and size by reducing the number of components while stabilizing a variation of power generation with a less variation of output torque.This hydraulic pressure power generation device includes a supply pipe A ...  
JP2011127569
To provide an assisted regeneration device reducing a drag loss of a regeneration motor or an assist pump.The assisted regeneration device 10 includes a motor generator 4 rotatively operating with electric energy, the regeneration motor ...  
JP2011122468
To provide a compact turning device and power generation device which achieve reduced friction loss and reduced wear of a vane tip.A turning device 2 consists of a casing 21 containing an intake port 25 and exhaust port 26 of fluid, a ro...  
JP2011106606
To provide a hydraulic motor driving device capable of sufficiently suppressing impact which occurs when a hydraulic motor is stopped.The hydraulic motor driving device includes flow control valves 15, 16 for applying resistance to a flo...  
JP2011099350
To eliminate restriction on a structure to be applied, and to further surely prevent such a situation that a high-temperature state occurs.This radial pump motor includes: a cylinder block 20 arranged rotatably around a predetermined rot...  
JP2011094490
To provide an axial piston type hydraulic rotary machine having sure stability of a piston shoe.A circular inside static pressure pocket 23 communicating with an oil feeding port 9A, an inner peripheral land part 22 formed on the outer p...  
JP2011085104
To provide a hydraulic motor drive device capable of sufficiently mitigating a shock generated when decelerating a hydraulic motor.The hydraulic motor drive device for changing a capacity of a hydraulic motor 1 includes a motor capacity ...  
JP2011074904
To improve durability and life of a piston, a swash plate and a shoe by restraining rotation motion of the shoe.A circular seal land 18 and a static pressure pocket 19 at an inner circumferential side are arranged at a slide contact part...  
JP2011047337
To provide a swash plate piston pump motor preventing oil from flowing from the side of the first oil passage of a piston and the side of the second oil passage of a shoe to the side of a cylinder when vacuum is produced in the cylinder ...  
JP2011038421
To reduce cost in a hydraulic motor with a lock mechanism.This hydraulic motor includes a cylinder chamber 5 formed in a cylinder block 3, a piston 7 fitted in the cylinder chamber 5, a pair of suction-discharge passages 13 and 14 for su...  
JP2011017441
To provide an inexpensive high-performance device utilizing a chamber and piston combined structure.The piston and chamber combined structure includes a chamber formed as an elongated chamber with a major axis, and having a first cross s...  
JP2011012582
To provide a hydraulic motor capable making compatible the suppression of a slip at stopping and starting efficiency at starting.A port 100 is in communication through a passage 100b to an oil chamber 100a facing the right end face of a ...  
JP2010275943
To configure a rotor provided, at only one location, with a protrusion element having a sliding contact portion with the inner circumferential surface of the casing on an outer peripheral surface of a cylindrical column element, as a spa...  
JP2010242649
To provide an axial piston type hydraulic rotary machine capable of previously lubricating an exposed sliding surface with the working liquid even in the stopped condition.The axial piston type hydraulic rotary machine is structured so t...  
JP2010229821
To achieve efficient regeneration treatment while properly preventing the clogging of a diesel engine particulate removal filter.A hydraulic drive device is provided with: a diesel engine serving as a drive source; a hydraulic pump drive...  
JP2010196612
To provide a hydraulic motor having a structure capable of preventing the seizure of the motor and the deterioration of the efficiency of the motor.The hydraulic motor 1 includes an output shaft 3, a cylinder block 4 attached to the outp...  
JP2010196614
To provide a hydraulic motor in which the lubricity of sliding parts of pistons disposed in a cylinder block is improved to prevent the motor from being seized and the deterioration of the efficiency of the motor is prevented.The hydraul...  
JP2010190179
To provide a two-speed switching piston for a hydraulic motor, increasing a switching speed to a high-speed mode, surely keeping the high-speed mode, and preventing mechanical and fluid shocks caused by sudden bringing-in operation in sw...  
JP2010190125
To provide a miniaturizable electric-hydraulic integrated hydraulic device, improving mechanical efficiency, reducing operation noise, and reducing cost.An electric-hydraulic integrated motor 1 includes a hydraulic motor 10 and an electr...  
JP2010174690
To provide a valve plate and a piston pump or motor capable of inhibiting the occurrence of cavitation erosion with a simple construction.A piston pump 20 is configured so that a plurality of piston chambers 31 are formed to make each pi...  
JP2010133260
To provide a scroll type fluid machine with which smaller size and lighter weight can be achieved.A scroll type fluid machine includes a scroll unit 8 comprising a drive shaft 4 extending in a sealed container, one end eccentric shaft po...  
JP2010121585
To reduce pulsation caused by the surge pressure of hydraulic oil, and to improve working efficiency in assembly.A cavity part 18 constituted of an annular space having a hollow inner part and a rectangular cross section is formed on the...  
JP2010116813
To provide a hydraulic piston pump motor capable of improving the lubricity of a pad face.This hydraulic piston pump motor includes a plurality of pistons reciprocating with respect to a rotating cylinder block, a volume chamber in the c...  
JP2010096043
To provide a spiral water turbine using the spiral water turbine, efficiently utilizing water energy, and also to provide a power generation facility.A two-shaft spiral water turbine 2 of the power generation facility 1 has: a first spir...  
JP2010077622
To provide a hydraulic motor swinging unit having an automatic oil level detecting function of immediately giving a warning to an operator for a construction machine in the case of deviating from a predetermined oil level without the ope...  
JP2010059849
To reduce operation speed of a servo cylinder of a capacity control device without causing getting stuck of contamination and without increasing capacity of a large diameter chamber of the capacity control device when the capacity of a v...  
JP2010031744
To provide swash plate angle control mechanisms of a hydraulic motor and hydraulic pump which can prevent the wear due to contact of a piston and swash plate.In a hydraulic motor and hydraulic pump having an inclined angle of a swash pla...  
JP2010025027
To supply lubricating oil of high viscosity to sliding parts, by constituting a simple mechanism in a machine for removing a dissolved refrigerant from the inside of the lubricating oil by defoaming under reduced pressure.The fluid machi...  
JP2010024929
To prevent seizure even at high rotation speed by forming a ring sliding part side of a piston into a ball bearing structure and eliminating sliding portions.The piston 23 is equipped with a recessed part 25 with an end formed in a cross...  
JP2010024900
To enhance the seizure resistance and abrasion resistance of a sliding surface of a tilt regulating cylinder, and to improve productivity.A plurality of pistons are circumferentially provided in a cylinder block rotating with a rotary sh...  
JP2010019192
To provide a piston pump with a variable pump capacity and reduced in size of a device.The piston pump 7 includes an outer race 13 rotatably provided around an axis Ax and having a cam face 15, and an inner race 15 provided rotatable rel...  
JP2009299531
To provide a hydraulic drive type motor device capable of sufficiently exhibiting cooling performance with respect to a mechanical seal in the hydraulic drive type motor device having a deceleration device for reducing the speed of rotat...  
JP2009243368
To secure reliability and to prolong the lifetime of a seawater desalination device by preventing wear caused by the friction of a power recovery chamber so as to suppress the generation of abrasion powder, and to decrease the friction l...  

Matches 601 - 650 out of 2,288