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Normally closed check valve

  • US 4,535,820 A
  • Filed: 05/24/1984
  • Issued: 08/20/1985
  • Est. Priority Date: 05/24/1984
  • Status: Expired due to Term
First Claim
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1. A valve device comprising:

  • a first body element having an input opening therethrough;

    a second body element which complements said first body element and having an outlet opening therefrom;

    a resilient valve disc mountable between said first and second body elements;

    first means with one body element for supporting the disc at the center thereof;

    means with the other body element for holding said disc firmly against said first means in such a manner that said disc is restrained from sideways movement; and

    wherein said disc element is round, and both said first and second body elements have round container portions in which said disc element upon mounting is suitably spaced from the edges thereof, and wherein said means for preventing sideways movement of said disc element includes pressure between said two body element means for partially deforming the center area of said disc to restrain same against sideways movement.

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