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Patent Searching and Data


Matches 501 - 550 out of 662

Document Document Title
JP08177756
To provide a highly reliable and flexible housing for a hydraulic system provided with a plurality of rotation systems by forming the housing with one set of opposite end walls and a sidewall which connect both end walls and forming an o...  
JP08100774
PURPOSE: To define a multitude of independent pumping elements via an extremely simple and economical method that offers appreciably reduced overall device dimensions. CONSTITUTION: A hollow body 2 acts as a casing closed off axially at ...  
JP08093660
PURPOSE: To provide such a connection mechanism for a multiple gear pumps that shortens processing hours and reduces cost. CONSTITUTION: A penetration hole 16 is formed along the axial line of a driven shaft 6 of the primary gear pump an...  
JP08093588
To install a fuel pump for motorized vehicles in a motor compartment so that it is easily accessible for maintenance and repair and reduce its cost by constructing it from one pump unit of a multiple pump. A multiple pump 2 consists of a...  
JP08004682
PURPOSE: To improve pumping efficiency by providing a vane pump subassembly having pumping vanes capable of displacement in plural radial directions, a booster pump subassembly having a moving impeller axially apart from the vane pump su...  
JP07332254
PURPOSE: To reduce the size of the whole of a system and improve recovery of energy by a method wherein pressure liquid delivered from two gear mechanisms for driving a pump is joined and fed to the actuator side and pressure liquid fed ...  
JP07300093
PURPOSE: To provide a lightweight water jet propulsion device with no cavitation so as to enhance the efficiency and the quietness in which a positive displacement pump part is formed in a scroll type composed of a stationary spiral elem...  
JP07279862
PURPOSE: To increase the suction and discharge volumes of working fluid, and to provide a lightweight and compact arrangement. CONSTITUTION: Two congruent cylinder segments 4, 4 are joined together with third axes are parallel with each ...  
JP07259751
PURPOSE: To prevent excessive fatigue of oil by arranging a changeover valve on one of outlets for immediately returning oil from a corresponding pump for the supplement of high supplement ratio and pressure, and arranging a supply part ...  
JP07197889
PURPOSE: To reduce cost by preventing the generation of vane bouncing noise owing to dislocation of a vane from a cam ring through simple structure. CONSTITUTION: A communicating hole through which a closed part and a vane back pressure ...  
JP07167066
PURPOSE: To improve the number of occurring times of cavitation of an oil pump having two pump cartridges. CONSTITUTION: A pump body 2 is provided at its interior with two pump cartridges 8 and 10 of the one being a main pump cartridge a...  
JP07167079
PURPOSE: To decrease the length of a feed passage between an inlet port and an outlet port for a rapid feed pressure buildup so as to reduce the rate of generation of cavitations by forming the feed passage to have a cross-sectionally re...  
JP07151070
PURPOSE: To suppress inside leakage which is caused by a pressure difference, so as to improve a volumetric efficiency by connecting an auxiliary pump to the suction port side of a gear pump, and interposing a pressure regulator for regu...  
JP07139447
PURPOSE: To seal a control circuit unit by arranging an inner cylinder which determins a fuel passage in a housing, enclosing its one end by a holder plate, and forming resin sealing parts around the inner cylinder and the holder plate t...  
JP07071390
PURPOSE: To suppress radiation of noises from a motor/pump housing into the atmosphere and suppress vibration directly transmitted from the motor housing to an underlying pump/motor assembly supporting structure by embodying both of nois...  
JP07054782
PURPOSE: To improve efficiency of variable control and facilitate working by forming a valve guide hole orthogonal relating to an axial line in a radial direction of an intermediate partitioning plate passing through a passage of connect...  
JP06346810
PURPOSE: To provide a multi-stage automobile fuel pump for supplying gasoline or other light hydrocarbon fuel to a spark ignition type internal combustion engine. CONSTITUTION: This multi-stage automobile fuel pump 10 is provided with a ...  
JP06341393
PURPOSE: To provide a motor-driven pump provided with a turbine driven by a high pressure fluid and suitably applied for pumping of a fluid, especially a laden fluid. CONSTITUTION: A motor-driven pump 1 is provided with a pivot sleeve 15...  
JP06317229
PURPOSE: To provide a fuel pump and constituting method therefor in which reworking and scrapping after a general assembly can be preliminarily avoided by preliminarily testing each of a pump action part and a motor part of a modular aut...  
JP06280755
PURPOSE: To improve pump discharge efficiency and responsiveness by performing bleed of air in a pressure operating chamber. CONSTITUTION: Positioning pins 41 and 42 are extended through the outer peripheries of side plates 32 and 33 and...  
JP06280777
PURPOSE: To increase a sucking tolerance of a centrifugal fuel pump by turning incomming fuel away to a side direction, and to substantially prevent a backflow of fuel to an inlet passage. CONSTITUTION: A baffle plate 116 is disposed bet...  
JP06280756
PURPOSE: To prevent the occurrence of pulsation owing to air bubbles in working oil and prevents temperature rise by disposing a displacement switching valve to switch one hydraulic pump to a delivery state and a circulation state and an...  
JP06264874
PURPOSE: To provide a composite pump having a small energy loss and a low manufacturing cost and suitable for driving the auxiliary machine of an automobile. CONSTITUTION: When the discharge quantity of oil exceeds a specific value, a tw...  
JP06229379
PURPOSE: To arrange a suction passage and a discharge passage to both pumps in end members completely related to each other by supplying fluid to both cartridges in parallel and by connecting to the both pumping operating cavities in par...  
JP06108981
PURPOSE: To simplify structure, heighten sealing performance and durability and aim at large capacity, that is, compactness in a fluid pressure pump/motor provided with a rotary rotor. CONSTITUTION: A rotor accommodating chamber 5 of cir...  
JP06101658
PURPOSE: To set a check valve operated when a first pump becomes the discharge state to the small-flow resistance state when the discharged oil from the first pump flows. CONSTITUTION: A check valve 1 is provided in an intermediate side ...  
JP06074013
PURPOSE: To simplify the manufacture of an oil pump. CONSTITUTION: Oil pump manufacture is simplified by providing a pump body with a planar unstepped face and achieving radial location by the provision of a bush 22 on a pump driven shaf...  
JP06017761
PURPOSE: To provide a power control device with a simple structure and being deliverable from a plant in the form of having a built-in power throttle. CONSTITUTION: A power control device 18 for controlling in a direction of reducing a d...  
JP06010846
PURPOSE: To provide a displacement-ensuring type fluid dealing arrangement in which radial end and side end of the wing panel slide on wall of a cylindrical cavity, long and narrow cavities having sealed rollers fit with wing panels duri...  
JP06010207
PURPOSE: To prevent the leakage of a spinning fluid from a spinning pump by preventing the generation of a shortcircuit flow of the spinning fluid from a spinning fluid introduction tube to an exhaust tube through the connection face bet...  
JP05280438
PURPOSE: To reduce the manufacturing cost of a feed unit and enable the unit to be assembled quickly and checked easily by inserting an electric drive motor for driving the feed member of a pump portion as a structural unit enclosed by a...  
JP05263771
PURPOSE: To reduce the power needed, reduce the loss due to friction and reduce the structural size. CONSTITUTION: A drive wheel 12 is arranged on a crankshaft 20 protruding from an internal combustion engine 8. The rotation of the drive...  
JP05256270
PURPOSE: To eliminate a bypass passage and simplify flushing operation with a simple and small-sized structure by providing a high pressure pump of the type of a sliding vane pump, and moving the vanes to allow a through flow exceeding i...  
JP05240146
PURPOSE: To integrate a pump with an electric motor by arranging an enlarged chamber directly connected to the interior of a housing on end members associated with a rotating group, and supplying a large amount of relatively static flow ...  
JP05202878
PURPOSE: To guarantee silent and balanced rotation of a main shaft and reduce magnetic attraction, gap higher harmonies and vibrational noise in a motor. CONSTITUTION: A rotary compressor comprises a motor, a main shaft 5 connected rotat...  
JP05195963
PURPOSE: To provide a double vane pump preventing the generation of cavitation in a common passage so as to enable the high-speed rotation of the pump and also preventing the lowering of pump durability at the time of increasing the rota...  
JP05133348
PURPOSE: To obtain a pressure energy translating device with a simple structure, useful in a pump or a fuel system by providing a pressure contained vane unit assembly comprising a pair of support plates, a cam ring, a rotor having a plu...  
JP05079472
PURPOSE: To provide a variable capacity pump which is more favorable in terms of the space and cost than a conventional pump, and the capacity of which is variable. CONSTITUTION: A drive shaft 2 to which a plurality of gears 4-8a are fix...  
JP05071475
PURPOSE: To provide a positive displacement pump capable of reducing torque fluctuation through a rotor phase difference of 60 degrees by using a shaft made of a solid metal material and a multistage three-lobe rotor. CONSTITUTION: A pos...  
JP04353284
PURPOSE: To reduce a thrust load applied on a bearing by making a set of two compression units, connecting rotors of the compression units of each set to a common drive mechanism and constituting them to supply pressure oil to a space be...  
JP04347383
PURPOSE: To miniaturize a joint, namely, a pump mechanism as a whole by reducing a burden to be imposed on the first joint, in a multiple gear pump mechanism. CONSTITUTION: This gear pump mechanism is of a triple structure connecting thr...  
JP04321783
PURPOSE: To easily and certainly solve the problem of lubrication defect of an intermediate joint. CONSTITUTION: A spline connecting part 31 is lubricated in such manner that a low pressure side communicating passage 27a is kept opened i...  
JP04303190
PURPOSE: To simplify machining for forming a spline coupling portion while effectively keeping the smoothing effect of pulsation rate and simultaneously serve the convenience in strength design. CONSTITUTION: Each number of teeth of driv...  
JP04265484
PURPOSE: To prevent seizure by making the plate thickness of the first vane which is held by the first rotor, smaller than that of the second vane which is held by the second rotor. CONSTITUTION: The plate thickness of the first vane 37 ...  
JP04262081
PURPOSE: To provide a fluid pump capable of controlling the discharge flow with a simple structure. CONSTITUTION: Gaps 39, 41, 67, 69 are formed on at least one of both sides in the axial direction of rotors 25, 57 of a front pump P1 and...  
JP04252885
PURPOSE: To abate the discharge pressure pulsation of a positive displacement type rotary pump as well as to reduce the extent of noise attribute to the pressure pulsation. CONSTITUTION: A pump part 30 is provided with both trochoidal fi...  
JP04234588
PURPOSE: To provide a dual capacity pump which has a simple structure and which can reduce the manufacturing cost, by incorporating two constant volume pump-up elements each of which is commonly provided with a one-way flow valve and a f...  
JP04231688
PURPOSE: To provide a gerotor pump of inexpensive manufacturing and assemblying costs and capable of reducing pressure pulsation to a lower value than the same kind of conventional pumps. CONSTITUTION: A plurality of pump chambers of var...  
JP04178143
PURPOSE: To attain driving excellent in synchronization without using a drive transmitting device by arranging magnetic pole surfaces of fellow rotors, brought into contact or opposed approximately, in a stator, in which an armature is p...  
JP04109089
PURPOSE: To improve the capacity of compressing the gas phase by providing a vane pump for discharging the gas phase and the liquid phase into a casing after compressing the gas-liquid two-phase flow, and a gear pump for compressing the ...  

Matches 501 - 550 out of 662