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Check valve of fuel tank

  • US 5,327,933 A
  • Filed: 09/28/1993
  • Issued: 07/12/1994
  • Est. Priority Date: 09/29/1992
  • Status: Expired due to Fees
First Claim
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1. A check valve of a fuel tank comprising:

  • a valve plate having joints on one peripheral side;

    a valve support integrally formed with holders for the valve plate, said valve support being of a semicylindrical shape having an inner diameter which is substantially equal to an outer diameter of a pipe to which the valve support is attached, said valve support being attached to said associated pipe by engaging projections and grooves or a plurality of projections and their receiving holes which are formed at least on end portions of the valve support on both sides and on said associated pipe; and

    a connecting pin inserted through the joints and the holders, said connecting pin including a flange head portion which is formed on one end thereof and has a larger diameter than pin receiving holes and a slot which is formed on the other end and extends along the axial center, said connecting pin being integrally formed with a retaining portion whose distal end portion has a smaller diameter than the pin receiving holes, which diameter gradually increases toward the flange head portion until it is larger than that of the pin receiving holes, so that the connecting pin serves as a hinge of the valve plate.

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