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Compression pressure indicator

  • US 4,655,159 A
  • Filed: 09/27/1985
  • Issued: 04/07/1987
  • Est. Priority Date: 09/27/1985
  • Status: Expired due to Term
First Claim
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1. A compression pressure indicator, comprising:

  • a compression member;

    means for exerting pressure on the compression member in an axial direction;

    the compression member being made of a material adapted to be deformed when subjected to pressure to form a seal between surfaces formed by the pressure means in contact with said compression member, the compression member including an indication portion extending from one end thereof and further including a collapsible portion adapted to receive pressure axially from one portion of the pressure means, said pressure means completely surrounding the compression member, the collapsible portion and the indication portion being constructed so as to form a V-shaped channel therebetween, the collapsible portion upon being subjected to a predetermined excessive pressure by said pressure means collapses allowing the compression member to move and fill the V-shaped channel such that at least part of the indication portion is urged out of the pressure means to provide a visual indication that further pressure is not required.

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