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Matches 351 - 400 out of 1,364

Document Document Title
JP4221541B2  
JP4206646B2  
JP2008223755A
To reduce friction while maintaining characteristics identical to pressure characteristics of a common oil pump based on provision of a plurality of discharge sources and a newly devised method of switching oil passages.The device is con...  
JP4154327B2  
JP2008537580A  
JP2008202488A
To reduce friction with keeping equivalent characteristics to pressure characteristics of ordinary oil pumps in a variable flow rate type oil pump having two delivery ports and using three rotors.This device comprises a first delivery pa...  
JP4144343B2  
JP4137361B2  
JP4128221B2  
JP4122398B2  
JP4115548B2  
JP4099337B2  
JP2008512595A  
JP4065721B2  
JP2008045482A
To provide a valve structure for a tandem pump of good operability with a simple structure.When pressure in a main liquid feed passage 5 is lower than non-load operation start pressure, an auxiliary liquid feed passage 6 is connected to ...  
JP4038740B2  
JP4035742B2  
JP4023969B2  
JP4019694B2  
JP2007315211A
To provide a gear pump which can reduce the pulsation of discharge. A piston 40 repeats the reciprocation according to the turning angle of a cam 32. As a result, the volume of a discharge port 27 is varied. The cam curve of the cam 32 i...  
JP4013246B2  
JP4005035B2  
JP3985023B2  
JP3982115B2  
JP2007177687A
To provide a tandem trochoid pump capable of preventing a spacer eccentric to a drive shaft from sliding and rotating with accompanying rotation of each pump structure.In the tandem trochoid pump, the drive shaft 3 transmitting drive for...  
JP3971369B2
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 ge...  
JP3960517B2
To provide an oil pump structure in which the influence of the pulsation of oil upon a relief valve is reduced and, thus, the operation of the relief valve is stabilized. In the oil pump structure, a bent part 11 for changing the flow di...  
JP2007125930A
To provide a vehicle brake device equipped with a pump body having structure capable of easily machining a suction port.The suction port 62 is formed by expanding a third central hole 72c formed on a third cylinder 71c to the diameter of...  
JP2007127071A
To effectively prevent wear of a bearing and a shaft end part of a drive shaft in a two stage pressure boosting type internal gear pump even when the same is used for pressurizing a liquid containing a lot of contamination in the liquid ...  
JP3922120B2
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 join...  
JP3915241B2
To satisfactorily drive pumps in a pump device which has the plural rotational pumps by suppressing flexure of a driving shaft even when high pressure at discharge ports is applied to the driving shaft. In this pump device 100, a rotatio...  
JP3911135B2
To prevent a hydraulic fluid leaking from one hydraulic pump from penetrating into a pump function part of the other hydraulic pump. The pump device comprises one motor 2 disposed in the center, two hydraulic pumps 1 and 3 that sandwich ...  
JP3872104B2  
JP3899785B2
To bleed pump devices in vehicular brake systems of air in appreciable fashion. A drive shaft 54 is arranged in a horizontal position, and a plurality of rotary pumps 10 and 13 are disposed with their discharge openings 61 and 63 and suc...  
JP3876128B2
To provide a device structure in a lubricating device provided with a triple oil pump and its manufacturing method miniaturizing and compactifying an oil pump, shortening an oil pump attaching part size, facilitating assembly work of the...  
JP3874154B2
To reduce slide sound generated by sliding of a partition member and a rotor pair, and reduce friction torque loss in a fluid pump. In a casing 21 of the fluid pump 20 parted into a first casing 22 and a second casing 23, plural rotor pa...  
JP3875734B2
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...  
JP2006283573A
To provide a multiple pump device capable of easily centering between connecting both pump members, while reducing processing manhours and processing cost of a connecting part of the pump members.In this multiple pump device, rotation tr...  
JP3861835B2
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...  
JP2006250153A
To prevent abnormal abrasion in wall faces of a pair of gears 52 and a gear chamber, in a driving part of the pair of gears of a crankshaft or in gear curve parts of the pair of gears caused by twisting and rotary motion of the pair of g...  
JP3851680B2
To provide a multiple gear pump in which the first body and the second body can be positioned to a plate without any increase in costs or any increase in the size of the device. The end part of the first drive shaft winding bush 6a posit...  
JP3848696B2
To reduce processing part by forming a through hole comprising a spline hole part and a hollow part of a larger diameter than that in an axial direction in a driven shaft of a first gear pump, and splinefitting a drive shaft of a second ...  
JP2006517634A  
JP3829824B2
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...  
JP2006170149A
To provide a tandem type oil pump capable of improving vehicle installing performance by shortening the length in the shaft direction of a pump.This tandem type oil pump has a housing body 1, a pump cover 2 for sealing an opening part 1a...  
JP2006170148A
To provide a tandem type oil pump for merging after being straightened, without collision of lubricating oil delivered from both pumps.This tandem type oil pump has a spacer 3 between a first trochoidal pump 4 and a second trochoidal pum...  
JP2006161616A
To provide a tandem type trochoid pump capable of improving workability during assembling without increasing the size of a housing, and also to provide a method of manufacturing the tandem type trochoid pump.The tandem type trochoid pump...  
JP2006138294A
To provide a lubricating device comprising a firs pump for feeding oil from an oil tank and a second pump for feeding the oil stored in the oil tank to parts to be oiled, having a smaller size and a greater discharge amount per rotation ...  
JP2006125239A
To provide an small-sized oil pump ensuring reliability by preventing a non-lubrication condition in the oil pump having possibility of sucking air from a suction port.In this oil pump 100 having a housing 30 forming a first cylindrical ...  
JP2006115686A
To provide a fluid pressure device, in which cooling of a motor is improved, for offering auxiliary power to a vehicle.The fluid pressure device that offers the auxiliary power for a vehicle comprises a fluid circulating system, which ha...  

Matches 351 - 400 out of 1,364