Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 501 - 550 out of 1,438

Document Document Title
JP2005220872A
To provide a gear pump or motor which solves the problem that the use of a gear with a helical tooth form prevents vibration or noise from being generated but makes the generation of thrust force require to hold the gear firmly, particul...  
JP2005220910A
To provide an oil pump for an automobile transmission which has improved efficiency over all operation ranges and in which a discharge flow rate preferably has no relation with speed of an internal combustion engine.In the oil pump for t...  
JP3705680B2
To obtain a high output though forming in compactness, in a hydraulic unit including a hydraulic pump driven to rotate in a single direction of rotation. A hydraulic unit is applied to a power steering device A mounted in a vehicle. In o...  
JP2005201215A
To provide an extruder with a gear pump which is excellent in responsiveness during revolution, which is reduced in cost and which can cool the material.In the extruder with the gear pump, the gear pump includes a drive pinion arranged c...  
JP3691761B2
To provide a multifunction and high-reliability movable vane type rotating device capable of realizing output characteristics such as one or more kinds of discharge amounts and discharge pressure, and handling two or more kinds of fluids...  
JP3688535B2
To provide a small high pressure liquid transmitting pump having a compact size, a simple structure, excellent transmitting performance, and excellent maintainability, allowing excellent layout in a factory. The structure of this gear pu...  
JP2005133716A
To provide a variable displacement vane-type fluid pump which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for an internal combustion engine at all speeds with mini...  
JP2005113894A
To materialize reduction in pulsating pressure and improvement in assembly working efficiency by minimizing expense in time and effort in complicated control of deviation between rotors when assembling both rotors in a driving shaft.Widt...  
JP3667034B2
To reduce pulsation when oil is delivered in an motor driven pump equipped with a suction chamber sectioned by engagement of a driving gear and a driven gear, by arranging a noise damper cylinder which is fixed to a housing supporting bo...  
JP3627119B2  
JP3653353B2
To provide a scroll compressor which can execute dual system oil supply without increasing the number of part items, and is excellent in lubricating characteristic at a low cost. An oil pump 601 comprises a housing 607 having a first slo...  
JP2005042627A
To provide a gear pump which can reduce a loss torque during an operation.The gear pump of an inscribed gear pump includes first, second housings 1, 2 having a pump chamber 3 communicating with an intake port 3a and a discharge port 3b, ...  
JP2005036656A
To improve the volumetric efficiency of a pump with relatively high operating frequency.This gear pump 100 includes tip seals A1, A2 formed between the tooth 3t of a drive gear 3 and a casing 1 to reduce an amount of fluid leaked from a ...  
JP2005023834A
To provide a multiple hydraulic gear pump enabling effective commonization of a shaft member used for a gear shaft and avoiding enlargement of a whole pump.When gear pairs composed of a pair of drive gears 1c, 2c, 3c and driven gears 1e,...  
JP2005016514A
To provide a feed pump 3 improving pump performance by reducing side clearances in an axial direction at both sides of a pump element PE.The feed pump 3 as this fuel supply device is constructed in such a manner that an outer rotor 22 an...  
JP2005016307A
To provide a variable displacement gear pump in which the mechanical efficiency of the most frequently operated gear pump can be improved.The variable displacement gear pump 1 is provided with a drive gear 20 in a casing 10, and a plural...  
JP3635671B2
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...  
JP2005002869A
To provide a fuel injection pump absorbing inclination of a camshaft 4 caused by pump force-feed load and inclination of the camshaft 4 in assembly without increasing the number of parts, and prevent increase in size of a feed pump 2.In ...  
JP2005002894A
To change delivery capacity with reducing surplus discharge.Discharge carried into a delivery port 72 from an intake port 52 is smaller than that of a first driven gear 101 side by q2 per a space between two teeth of a driven gear. Disch...  
JP2004360677A
To solve the following problem with a conventional coolant pump: a boundary friction state is made to damage a bearing surface because of the use of an expensive bush in a bearing which does not have such a structure as to positively flo...  
JP2004301044A
To provide a fuel injection pump provided with a feed pump for preventing deformation of a pump plate 26 without making thickness of the pump plate 26 thick.In the pump plate 26 of the feed pump, an inlet port 26b and an outlet port 26c ...  
JP2004293552A
To provide a variable displacement rotary compressor for varying compression capacity to implement wide band range multistage variable displacement while narrowing rotating speed variation width of a driving motor.The variable displaceme...  
JP2004278502A
To provide a multi-stage gear pump capable of securing a boosting characteristic of liquid.A pump 1 is equipped with a first stage gear train 36 made up of gears 26, 32, a second stage gear train 37 made up of gears 27, 33, and a third s...  
JP2004278518A
To provide a motor-driven pump unit provided with an electric motor including a stator and a rotor, a pump concentrically enclosed by the rotor of the motor which is U-shaped in an axial sectional view, a web of the U-shape provided in t...  
JP2004278381A
To provide a gear pump which materializes reduction of liquid leakage between a pump chamber and an inside space.In a pump part 11 of a two stage gear pump 1, the inside space is formed in a position around a cylindrical surface 29a of a...  
JP2004530553A
Dark 集 of sediments, such as sludge, a water area, etc. Equipped with the following requirements, especially the waste sludge of a sewage disposal plant, or equipment for drying: At the end, a principal axis, Nijo which has a suction d...  
JP2004251283A
To provide a double-pump and double-motor unit of simplified structure and optimized cooling.This electrohydraulic type double-pump and double-motor unit for a self-propelled work machine, especially platform truck is provided with a fir...  
JP2004232627A
To further improve a motor pump unit of a conventional structure with relation to manufacturing cost and necessary space especially.This motor pump unit is provided with at least two internal gear pumps respectively including a small gea...  
JP3575180B2
To ensure a good assembly workability to the housing of an inner rotor without giving an effect to a seal width for the housing of the inner rotor, in an oil pump. An oil pump is provided with an inner rotor to which a rotation is transm...  
JP2004197573A
To provide a fluid feeding system capable of improving the reliability by minimizing the increase in weight, miniaturizing and weight-saving thereof.A fuel pump 2 is made a triple gear pump having a first pressurizing part 9 and a second...  
JP3573242B2
To provide a vane pump that reduces an extent of horsepower consumption, and also to heighten the occurrence limitation of cavitation through an improvement in suction efficiency, and further to have pumping efficiency so improved enough...  
JP2004190491A
To reduce the manufacturing cost by using a cheap material used for a motor for a fuel pump.A lid member 21 of the fuel tank 1 is provided with a motor storing partition wall 22 whose inside is isolated by sealing oil-tightly to fuel in ...  
JP2004190682A
To provide a new and improved gear pump assembly, and a new and improved hot melt adhesive dispensing assembly having a plurality of the new and improved gear pump assemblies incorporated therein.Each gear pump assembly 310 is mounted up...  
JP3569956B2
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 ...  
JP2004169914A
To provide a hydraulic drive cook system that can be endured for the usage even under the severe environment of pitching and rolling like a boat.A hydraulic actuator that operates at least one cook and a operation gear of the hydraulic a...  
JP2004513275A
The present invention shows substitution and so-called predominance to the conventional technology by offering the double type port constant capacity form liquid pressure pump (20) whose efficiency improved by carrying out the part style...  
JP3516685B2  
JP2004509269A
The present invention is equipped with a main pump (12) and 予圧縮ポンプ (5), and the exit (8) of 予圧縮ポンプ (5) is related with the liquid pressure equipment (1) connected with the entrance (11) of the main pump (12) by th...  
JP3533576B2
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...  
JP2004073968A
To provide a transfer equipment which produces a negative pressure even when a high viscosity or high concentration principal material is transferred with a single-shaft eccentric screw pump or a volumetric pump, mixes a material difficu...  
JP2004066759A
To stabilize generation of a negative pressure, to reduce noise when a pressing force is released, and to reduce a maximum driving load through reduction of a maximum load of each tube pump at a suction means of a recovery mechanism part...  
JP3526885B2
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...  
JP2004044540A
To provide a method for manufacturing a tightening joint member, capable of generating a prescribed load by adjusting a position, and realizing time reduction for the position adjustment.This method is to manufacture the tightening joint...  
JP2004503724A
In addition to an operation oil tank (13), the present invention relates to the 可搬 type hydraulic pump unit (1) equipped with the housing (2), the pump (5), and the drive motor for pump (5) (6) that is especially the forms of an elec...  
JP2003328958A
To provide a serial parallel switching double gear pump and a switching circuit as a fluid supplying system wherein a temperature rise of fluid is restrained, even when the consumption of fluid such as fuel is decreased in contrast to th...  
JP2003314465A
To provide an oil pump apparatus having multiple or multistage oil pumps integrally constituted in a compact manner.A first rotor 1 having an external gear 1a at the outer peripheral part is provided on the innermost side, and a second r...  
JP2003314469A
To solve problems in a conventional refrigerant pump wherein an intermediate shell is provided to ease distortion in welding, but the number of parts is increased and the tolerance of each part is accumulated to make centering of a drive...  
JP2003314440A
To assure necessary delivery amount by preventing delivery oil from the delivery ports of the other hydraulic pumps from flowing into a relief valve with a low relief pressure and connecting the delivery ports of hydraulic pumps, when a ...  
JP2003307186A
To provide a pump device consisting of two hydraulic pumps having different characteristics, capable of reducing the energy loss of the whole pump device and complementing a shortage in the discharge amount of a working oil when the oper...  
JP2003286973A
To increase a sealing width between a communication passage for joining a suction port to an oil sump space through a check valve and a vane groove part.This vane pump comprises a cam ring 31R, a right valve plate 38R and a right side fi...  

Matches 501 - 550 out of 1,438