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US 5,313,978 AGranted
Ventilation line opening/closing means of fuel tank
AssigneeOM Industrial Co., Ltd.
InventorsHiroshi Takaki, Shinya Shimada
Life of this patent
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AssigneeOM Industrial Co., Ltd.
InventorsHiroshi Takaki, Shinya Shimada
Estimating the term…
An object of the invention is to improve a ventilation line opening/closing means of a fuel tank which interrupts a ventilation line from the fuel tank to a canister during fuel supply so as to restrict the fuel level when the tank is full, and which opens the ventilation line during traveling of a vehicle. This invention provides a ventilation line opening/closing means of a fuel tank, comprising a float valve provided in a ventilation line for introducing gas of the fuel tank into a canister so as to control ventilation, wherein a fuel receiving portion of return fuel including escape holes is integrally formed on a lower portion of a vent shut-off valve, so that the vent shut-off valve is opened by return fuel from the engine during operation of the engine, and that the vent shut-off valve is closed by the force of a spring during a stop of the engine.
A ventilation line opening/closing means of a fuel tank, comprising a float valve provided in a ventilation line for introducing gas of the fuel tank into a canister so as to control ventilation, wherein a spring is provided to close a vent shut-off valve during a stop of an engine, and a fuel receiving portion including escape holes in the bottom is formed in a float which is integral with the vent shut-off valve so that return fuel from the engine is introduced into the fuel receiving portion during operation of the engine, thereby opening the vent shut-off valve, withstanding the force of said spring.
Dependencies are inferred from the claim text.