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Variable orifice sealing valve

  • US 5,211,370 A
  • Filed: 01/06/1992
  • Issued: 05/18/1993
  • Est. Priority Date: 01/06/1992
  • Status: Expired due to Fees
First Claim
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1. A variable orifice sealing valve comprising:

  • a thin, elastic cylinder having a first end, a second end and a cylindrical length and when at rest having a central opening comprising a fluid passageway therethrough having a passageway area;

    a first ring member affixed to the first end of said thin, elastic cylinder in a meanner so that the first ring member will not turn with respect to said first end;

    a second ring member affixed to the second end of said thin, elastic cylinder in a manner so that the second ring member will not turn with respect to said second end, whereby when said first ring is turned with respect to said second ring, the fluid passageway will change in area; and

    a spring mounted exteriorally of said thin, elastic cylinder, said spring having a first end and a second end, said first end being affixed to said first ring member and said second end being affixed to said second ring member, said spring urging the first ring to turn with respect to the second ring.

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