Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 351 - 400 out of 1,417

Document Document Title
JP2012122463A
To provide an oil pump device wherein easy installation of an electric pump is possible.A mechanical pump 20 having an inner gear 21 driven by an engine and an outer gear 23 meshing with the inner gear 21 and an electric pump 30 having a...  
JP2012107526A
To provide a triple gear pump in which a volumetric efficiency is increased by improving the sealability between the tooth crests of a gear disposed at the center and the internal wall surface of a casing.The gear 2 at the center of this...  
JP2012107598A
To provide an oil pump device allowing easy installation of an electric pump.In this oil pump device, a mechanical pump 20 including an inner gear 21 to be driven by an engine and an outer gear 23 engaged with the inner gear 21 and the e...  
JP2012087782A
To improve a pump device, particularly a pump device for helicopter lubrication, by providing the pump device designed simply so as to solve the cost problem.This pump device 1 is in particular, a pump device 1 for lubrication in a helic...  
JP4920971B2  
JP2012062837A
To further reduce a pump driving force by allowing control of a smaller discharge rate in an oil pump with a variable flow rate including a lubrication pump and a control pump.The control pump 35 includes a plurality of oil pumps 36, 37 ...  
JP2012062839A
To improve productivity and to achieve reduction in the cost, size and weight by suppressing increase in the numbers of the manufacturing processes and components of the entire pump, in an oil pump with a variable flow rate having an oil...  
JP4880817B2  
JP4872845B2  
JP4833277B2  
JP4796026B2  
JP4776203B2  
JP4764567B2  
JP4732579B2  
JP2011132807A
To provide a pump device inhibiting enlargement of a pump by increasing flexibility in layout of liquid passages.Working fluid from a first external gear pump part is discharged from a first discharge port formed on a support plate provi...  
JP4681126B2  
JP4682807B2  
JP2010519447A5  
JP3166911U
[Subject] Provide a pump which there is little wear of a partition and can perform inhalation of smooth fluid, and discharge. [Means for Solution] Cylindrical rotating bodies 2 and 4 and cylindrical eccentric rotation object 3 which it r...  
JP2011064147A
To provide a pump device achieving a reduction in the axial length of a pump.This pump device includes: a pump unit P formed into a generally cylindrical shape and stored in a storage portion 41 forming a low pressure chamber 40 formed i...  
JP2011064145A
To reduce a load on a drive source in a gear pump including a plurality of drive shafts.Pressure of a first inlet flow passage 4a of the first inlet flow passage 4a and a second delivery flow passage 5b which are arranged across a fourth...  
JP2011503428A
The invention relates to a pump assembly for the synchronous pressurization of two fluid circuits. Two internal gear pumps are disposed together in a pump housing and rotationally driven by drive shafts thereof. Pinions of the pumps are ...  
JP2010280342A
To provide a fine-bubble generating apparatus in a hull to reduce fluid friction resistance by forming thick water layers including fine bubbles on an immersed surfaces of the hull, using a root pump which can mix a large amount of air i...  
JP4521005B2  
JP2010526962A
The present invention is a pump composition group which carries out pressure load of the two fluid pillars in synchronization, and the pump composition group has two internal gear pumps which are driven via a common driving shaft and whi...  
JP2010159765A
To provide a volume rotary screw machine which has a wide range of technical and functional potential capacity in reduction of a range of an angle of thermodynamic cycle while improving its efficiency and can reduce heat loss as a whole....  
JP2010144570A
To finely control a workload in a gear pump. This gear pump includes: a gear group 1 composed of not less than four even-numbered gears 1a to 1d annularly arranged with adjacent gears engaged with each other; a first casing 2 surrounding...  
JP4492590B2  
JP4488491B2  
JP2010519447A
A flexible impeller pump includes first and second component housings. The first component housing includes a first flexible impeller and the second component housing includes a second flexible impeller. As these impellers rotate within ...  
JP4472224B2  
JP4462938B2  
JP2010090807A
To provide a double vane pump allowing easy switching.The double vane pump includes a first and a second change-over valve 26A, 26B connected to a first and a second vane pump 101, 102 respectively, and changing-over between supplying of...  
JP4455796B2  
JP4438519B2  
JP2010053692A
To prevent generation of impact and noise when switching to high capacity operation from low capacity operation, in a variable displacement rotary pump.Switching to 100% operation from 50% operation of a variable displacement gear pump i...  
JP2010053693A
To provide a variable displacement rotary pump which prevents the occurrence of oil impulse when being switched from high capacity operation to low capacity operation.A spool valve 55 of a solenoid pilot valve moves forward through energ...  
JP2010048209A
To provide a pump of structure capable of nearly evening degree of loads to be applied to a pair of driving force sources.This pump comprises a pair of driving members 31l and 31r connected to a separate pair of driving force sources so ...  
JP4410104B2  
JP2010014101A
To provide a multiple vane pump superior in pump efficiency.This multiple vane pump has a switching valve 26 connected by at least one vane pump among a plurality of vane pumps 101 and 102, and switching the supply of a working fluid del...  
JP2010001742A
To provide a variable displacement pump capable of varying the displacement by axially moving an inner rotor and of minimizing loads on the pump and an engine by gradually raising a hydraulic pressure and a drive torque.This variable dis...  
JP2009264109A
To reduce noise and vibration in a work vehicle mounted with a hydraulically driven operating machine.A double gear pump 32 for forcibly feeding hydraulic fluid by engagement/rotation of a pair of gears composed of a drive gear and a dri...  
JP4348850B2  
JP2009236074A
To provide a double gear pump whose components for actualizing the function of controlling the discharge amount of operating liquid in two steps are simplified and built in a body.Operating oil carried by a high pressure gear pump 21 is ...  
JP2009215932A
To provide a tandem pump in which friction and leak are suppressed.A tandem pump includes a first gear section and a second gear section which are rotatingly driven by driving of a rotating shaft, a pump housing section provided in a hou...  
JP4332772B2  
JP2009203811A
To provide a variable displacement type gear pump capable of efficiently recovering energy as a motor and achieving commonization of return passage returning oil to a suction side during low displacement operation as a pump and a return ...  
JP4327579B2  
JP2009197796A
To provide a lubricating pump with reduced number of components, weight and size.The lubricating pump having: a first stage 5 and a second stage 10; the first stage 5 in turn has an intake connectable hydraulically to a tank of lubricati...  
JP2009079572A
To provide a multiple gear pump which has not strict restrictions on mounting it on various liquid pressure machines by suppressing increase of length of a pump main body in a connection direction.As an input side 14a of a driving shaft ...  

Matches 351 - 400 out of 1,417