Fuel tank cap
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United States of America Patent
Stats
-
Sep 6, 1988
Grant Date -
N/A
app pub date -
Oct 21, 1987
filing date -
Oct 21, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a fuel tank cap comprising a body, the upper portion of which is provided with a hole. Said hole exhibits a plurality of concave or convex sections which are formed along the inner periphery of the hole. A cover comprises a sleeve, which is formed on the inner periphery of the cover for insertion into the hole of the body, and has a plurality of axial slits. The sleeve is provided with a plurality of convex or concave sections formed along its outer periphery so as to mate with the concave or convex sections of the hole, respectively. When a clamping torque applied on the cap exceeds a predetermined value, an idle-rotation mechanism is established between the sleeve and the hole. The fuel tank cap and, more particularly, such a type of cap can effectively prevent the leakage of fuel in a vehicle fuel tank when the vehicle collides with another vehicle or object.
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