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Electrically heated flexible tube having temperature measuring probe

  • US 4,038,519 A
  • Filed: 11/15/1974
  • Issued: 07/26/1977
  • Est. Priority Date: 11/15/1973
  • Status: Expired due to Term
First Claim
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1. A flexible heating tube, especially for medical use, comprising a flexible pipe of transparent plastics material, at least one electrical helical resistance heating conductor and at least one helical filiform temperature measuring resistance probe being wound on the same axis and being embedded in the wall of the said pipe, and in surrounding relation to the bore in the pipe, the helical turns of the at least one electrical resistance conductor and of the at least one temperature measuring probe being of the same pitch, and being coextensive along the length of the pipe and electrical connection terminals at at least one end of said pipe connected to said at least one heating conductor and said at least one temperature measuring probe.

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