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특허 상세정보

Filler neck butterfly check valve

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-015/14   
미국특허분류(USC) 137/51215 ; 137/852
출원번호 US-0316159 (1994-09-30)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 75  인용 특허 : 0
초록

A one-way check valve assembly for use in the filler pipe of a vehicle fuel system to prevent liquid fuel from backing up the filler pipe. The check valve assembly includes a valve member formed from a resilient material, normally biased to a closed position in sealing engagement with the interior surface of the filler pipe flow passage, and forced open during refueling by the flow of fuel through the filler pipe inlet to the fuel tank. In a preferred form the valve member comprises a thin-walled flexible membrane formed in butterfly fashion about a cent...

대표
청구항

For use in the filler pipe of a vehicle fuel system having an inlet end for the introduction of fuel and an outlet end for delivering the fuel to a fuel tank, a valve assembly for the filler pipe comprising: an essentially circular fluid passage with an inlet end, an outlet end, a sidewall between the inlet and outlet, and a downstream angled seating surface in the sidewall comprising an angled circumferential section of the fluid passage, the thickness of the sidewall being progressively thickened and the diameter of the fluid passage being correspondin...

이 특허를 인용한 특허 피인용횟수: 75

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