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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||417/220 ; 418/26 ; 418/31|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 18 인용 특허 : 0|
An adjustable volume vane-type rotary pump is disclosed in which volume control is obtained by adjusting the eccentricity of a control ring against which the vanes run. The control ring is urged towards its position of maximum eccentricity by a spring and position control of the ring is obtained by a piston and cylinder system operating in opposition to the spring. Operation of the piston and cylinder assembly is dependent on the dynamic pressure of fluid delivered by the pump so that when a certain speed of rotation is achieved the pressure exerted by t...
An adjustable volume pump comprising a rotor, a plurality of generally radially extending slots in said rotor, vanes mounted in said slots for radially inward and outward movement, a control ring surrounding said rotor and being eccentrically adjustable relative to the rotor, the vanes having outer portions adapted to move along an inner surface of the control ring in operation of the pump, a pressure applying means for urging said ring towards one extreme position, a piston and cylinder system for adjusting the position of the control ring in opposition...