Patent ID: 6755316
Filing Date: 2004-06-29
Classification: B60K,Y10S

Abstract:
A fuel cap for automobiles, which is a screw-type fuel cap, comprising:a closure mounting an upper seal ring and a lower seal ring individually thereon, and a handle integrally constructed with the closure, wherein the upper seal ring is mounted on the closure at the position to be unsealed with a filler neck when the closure starts to be turned off, the lower seal ring is mounted on the closure at the position to release a sealing condition of the filler neck when the closure is completely removed from the filler neck, and the lower seal ring has a cross-section comprising: a ring base attached to the closure; an umbrella-shaped part extending with the ring base in a direction to an inner wall of the filler neck with downward pitch; an elastic support part provided at the edge of the umbrella-shaped part contacting in pressure against the inner wall of the filler neck; and a lip part extending from the elastic support part in a direction to the closure with downward pitch.