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Quick connect coupling

  • US 6,155,607 A
  • Filed: 02/04/1999
  • Issued: 12/05/2000
  • Est. Priority Date: 02/17/1998
  • Status: Expired due to Fees
First Claim
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1. A coupling assembly for connecting a first tube having a plug end to a second tube having a socket end, the plug-end of the first tube being closely receivable in the socket-end of the second tube and having a radially-projecting annular bead proximate the distal end of the first tube, the coupling assembly comprising:

  • a cup-shaped shell having a cylindrical sidewall and an endwall at one end of the sidewall, said shell endwall having a central circular opening receiving the first tube;

    a collet received in said shell, said collet having a cylindrical sidewall and an endwall at one end of the collet sidewall adjacent the endwall of the shell, said collet endwall also having a central circular opening receiving the first tube, the portion of the collet endwall surrounding the opening having an inner diameter which is less than the outer diameter of the annular bead on the first tube, said collet sidewall including a series of resilient fingers extending axially toward the plug-end of the tube, each of said fingers including a radially-inward projecting tab; and

    a first O-ring located around the first tube between the annular bead and the distal end of the first tube, wherein said collet and shell include cooperating resilient structure toward the one end of the collet for retaining the shell on the collet.

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