Shut-off device and fueling apparatus for fuel tank
OwnerHiroyuki Haganoinventor
Life of this patent
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Abstract
A fuel cap easily realizes a function to warn the user that the pressure regulating valve is activated as backup means for the fuel tank pressure adjustment mechanism. The fuel cap includes a negative pressure valve that regulates the fuel tank pressure. An alarm mechanism is disposed upstream from the negative pressure valve. The alarm mechanism issues a warning that the negative pressure valve of the pressure regulating valve is activated as a backup for the fuel tank pressure adjustment mechanism by emitting sound via a whistle mechanism when air flow takes place due to the opening of the negative pressure valve.
Claims16
A shut-off device that includes a pressure regulating valve that regulates an inner pressure of a fuel tank, the shut-off device comprising:
- an alarm mechanism that indicates that the pressure regulating valve is activated due to an air flow resulting from an opening action of the pressure regulating valve.
A fueling apparatus for a fuel tank that includes an inlet pipe having a fuel path that supplies fuel to the fuel tank, the apparatus comprising:
- a pressure regulating valve that regulates an inner pressure of the fuel tank and is disposed in the inlet pipe;
- and
- an alarm mechanism that indicates that the pressure regulating valve is activated due to an air flow resulting from an opening action of the pressure regulating valve.
Dependencies are inferred from the claim text.