|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||141/59 ; 137/588 ; 144/46 ; 220/862|
|발명자 / 주소|
|인용정보||피인용 횟수 : 29 인용 특허 : 17|
A vaportight seal door assembly mounted in the upper end of a vehicle fuel system filler pipe. The seal door is normally biased to a closed position to create a vaportight seal between the fuel tank and the filler pipe inlet, normally closed by a cap. The seal door yields upon insertion of a dispenser nozzle to permit refueling. The seal door is provided with pressure relief structure to vent fuel vapor from the fuel tank to the upper end of the filler pipe at a predetermined pressure differential when the seal door is closed.
In a vehicle fuel system having a fuel tank and a filler pipe with an inlet, an improved seal door assembly in the filler pipe between the inlet and the fuel tank, comprising: partition means in the filler pipe near the filler pipe inlet, the partition means including an aperture sized to permit insertion of a fuel dispenser nozzle through the partition means, the partition means further defining a seal door seat associated with the aperture; a seal door movable from a closed position on the seat to an open position off the seat upon insertion of a dispe...