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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||417/220 ; 418/26|
|우선권정보||JP-0358801 (1992-12-28); JP-0046171 (1993-02-12)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 31 인용 특허 : 0|
A variable capacity or displacement type pump by which a pump discharge quantity is variably controlled in accordance with the revolution number, which has simple construction to contributes easier machining and assembling, and is reliable in operation. A cam ring is movably arranged to define a pump chamber around a rotatable rotor within a pump body and is biased so that the volume of the pump chamber is made maximum. Sealing members are provided in an annular space between the cam ring and the pump body so as to define first and second hydraulic press...
A variable displacement type pump, comprising: a pump body; a rotor having a plurality of vanes, rotatively arranged within said pump body; a cam ring movably arranged around said rotor within said pump body for defining a variable pump chamber between said cam ring and said rotor and an annular chamber between said cam ring and said pump body; biasing means for biasing said cam ring so as to make said pump chamber maximum in volume; sealing means contacting with both said cam ring and said pump body for dividing said annular chamber into first and secon...