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Valve

  • US 5,941,505 A
  • Filed: 05/08/1996
  • Issued: 08/24/1999
  • Est. Priority Date: 05/09/1995
  • Status: Expired due to Term
First Claim
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1. A valve, comprising:

  • a) a valve housing having a through-flow channel;

    b) a valve seal in said through-flow channel;

    c) a closure member movable relative to said valve seat;

    d) a membrane formed from overlying disks, said membrane having first and second sides attached to said valve housing and said closure member;

    e) a seal disposed adjacent said membrane first side and engaged with said closure member for defining in said housing a closed space;

    f) a non-compressible deformable support medium fills said closed space; and

    g) said closure member is shaped so that the volume of said closed space remains constant during movement of said closure member.

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