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Non-temperature cycling cryogenic cooler

  • US 4,802,345 A
  • Filed: 12/03/1987
  • Issued: 02/07/1989
  • Est. Priority Date: 12/03/1987
  • Status: Expired due to Term
First Claim
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1. In a cryogenic cooler which includes a dewar spaced from a cold finger and which is arranged to operate at an operating temperature, the improvement in maintaining thermal conductivity between the cold finger and the dewar and thereby to prevent temperature cycling in the cooler, comprising a gas having the characteristic of remaining in its gaseous state at the operating temperature and, therefore, to remain in its thermally conductive state.

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