IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0226079
(1994-04-11)
|
발명자
/ 주소 |
- Horikawa Kazuo (Kooriyama JPX)
|
출원인 / 주소 |
- Kabushiki Kaisha Mikuni (JPX 03)
|
인용정보 |
피인용 횟수 :
19 인용 특허 :
0 |
초록
▼
A shut-off valve for a liquid fuel includes a valve housing in which a float, adapted to bs raised by buoyant force as the liquid fuel flows into the valve housing, and a valve disc, for sealably closing a fuel vapor outflow hole, are arranged in such a manner as to allow the valve disc to be vertic
A shut-off valve for a liquid fuel includes a valve housing in which a float, adapted to bs raised by buoyant force as the liquid fuel flows into the valve housing, and a valve disc, for sealably closing a fuel vapor outflow hole, are arranged in such a manner as to allow the valve disc to be vertically displaceable relative to the float. A plate-like valve member, which carries a rod-shaped protuberance for sealably closing a through hole formed through the valve disc, is disposed between the valve disc and the float. When the float is lowered as the liquid fuel returns from the valve housing to the fuel tank, a first engagement pawl engages the plate-like valve member at a single point and, at the same time, a second engagement pawl engages a flange portion of the valve disc at a single point, whereby the plate-like valve member and the valve disc are opened so as to enable the fuel vapor generated in the fuel tank to flow into a receiving canister. At the time of an occurrence of vehicular accident or emergency, a ball member disposed in the valve housing is slidably displaced along a concave conical surface until the fuel vapor outflow hole is sealably closed by the valve disc via the ball member, thus preventing the liquid fuel from flowing into the canister.
대표청구항
▼
A shut-off valve, for preventing liquid fuel from entering a vapor flow path providing communication between the vapor space of a fuel tank in a vehicle and a vapor storage canister, said shut-off valve closing the vapor flow path responsive to an abnormal inclination of the vehicle and comprising:
A shut-off valve, for preventing liquid fuel from entering a vapor flow path providing communication between the vapor space of a fuel tank in a vehicle and a vapor storage canister, said shut-off valve closing the vapor flow path responsive to an abnormal inclination of the vehicle and comprising: a valve housing having at least one fuel vapor inflow hole and a fuel vapor outflow hole; a float, slidably contained within said valve housing, for rising within said valve housing by buoyant force upon liquid fuel entering said valve housing; a valve disc, for sealably closing said fuel vapor outflow hole upon being forced upward by said float, said valve disc having a central through-hole; a plate-like valve member for engaging said valve disc, in a closed position, to close a lower end of said through hole, responsive to rising of said float; pivot means, carried by said plate-like valve member, for allowing said plate-like valve member to pivot relative to said valve disc while in said closed position; first engagement means, carried by said float, for engaging said valve disc, responsive to lowering of said float, to limit movement of said valve disc relative to said float, said first engagement means serving to pull said valve disc away from said fuel vapor outflow hole responsive to the lowering of said float; and second engagement means for engaging a first single point on the periphery of said plate-like valve member, responsive to the lowering of said float, to pivot said plate-like valve member, about said pivot means, into contact with said valve disc at a second single point on the periphery of said plate-like valve member, opposite said first single point, thereby producing a force couple to disengage said plate-like valve member from said closed position by a levering action.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.