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Miniature fitting assembly for micro-tubing

  • US 5,669,637 A
  • Filed: 05/29/1996
  • Issued: 09/23/1997
  • Est. Priority Date: 05/29/1996
  • Status: Expired due to Term
First Claim
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1. A fitting assembly for mating an end of a micro-tubing segment in fluid communication to a connector having a first interlocking surface and a bottom wall having a fluid outlet port defined centrally therein, the fitting assembly comprising:

  • (a) a nut having a second interlocking surface engageable with the first interlocking surface of the connector and having a longitudinal passage for slidably receiving the end of the micro-tubing segment;

    (b) an annular ferrule capable of being slidably received on the received end of the micro-tubing segment;

    (c) a tubular insert having a stem insertable within the received end of the micro-tubing segment and an annular head which abuts the received end of the micro-tubing segment after insertion of the stem, the ferrule being captured between the nut and the head of the insert; and

    (d) an annular elastomeric seal receivable coaxially on the head of the insert and extending distally beyond a distal side of the head of the insert in a direction away from the stem of the insert, the nut bearing on the ferrule when the fitting assembly is mated with the connector to compressively seal the received end of the micro-tubing segment between the ferrule and the stem of the insert and to compress the elastomeric seal in sealing engagement with the head of the insert and the bottom wall of the connector.

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