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Thermally energized packer cup

  • US 4,424,865 A
  • Filed: 09/08/1981
  • Issued: 01/10/1984
  • Est. Priority Date: 09/08/1981
  • Status: Expired due to Term
First Claim
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1. A thermally energized packer cup comprising:

  • reinforcing means which is fabricated from a shape memory alloy that is cold worked into an original shape, constrained, heated to a transformation temperature, and cooled; and

    a tapered elastomer body which is coupled to said reinforcing means,said reinforcing means so constructed and arranged that said elastomer irreversibly is urged to expand when said means is thermally energized.

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