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특허 상세정보

Variable displacement pump having a rotating cam ring

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F03C-002/00    F04C-014/18    F04C-014/00   
미국특허분류(USC) 418/030; 418/001; 418/031; 418/152; 418/173; 384/103; 384/114
출원번호 US-0499462 (2006-08-04)
등록번호 US-7491043 (2009-02-17)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Fay Sharpe LLP
인용정보 피인용 횟수 : 3  인용 특허 : 32
초록

Vane pump (10) mechanical losses are reduced by removing vane friction losses and replacing them with lower magnitude journal bearing fluid film viscous drag losses. A freely rotating cam ring (70) is supported by a journal bearing (80). A relatively low sliding velocity is imposed between the cam ring and the vanes (26). This permits the use of less expensive and less brittle materials in the pump by allowing the pump to operate at much higher speeds without concern for exceeding vane tip velocity limits.

대표
청구항

Having thus described the present invention, it is now claimed: 1. A variable displacement gas turbine fuel pump comprising: a housing having a pump chamber, and an inlet and outlet in fluid communication with the pump chamber; a rotor received in the pump chamber; a cam member surrounding the rotor and freely rotating relative to the housing; a cam sleeve radially interposed between the cam member and the housing; an actuator assembly operatively associated with the cam sleeve in the housing to selectively vary pump output; a spacer ring interposed bet...

이 특허에 인용된 특허 (32)

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