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Reverse taper ring lock coupler and method

  • US 4,790,569 A
  • Filed: 01/12/1987
  • Issued: 12/13/1988
  • Est. Priority Date: 01/12/1987
  • Status: Expired due to Fees
First Claim
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1. In a closed fluid containment system of the type that includes an elastomeric hose coupled to a nipple wherein the hose has a coefficient of expansion greater than a coefficient of expansion of the nipple, the improvement of substantially eliminating cold temperature leakage of a fluid between the nipple and coupled hose, the improvement comprising using a nipple that has an obverse taper extending to a maximum diameter of the nipple and a reverse taper extending from the maximum diameter of the nipple, the rise and fall from the maximum diameter establishing a radial deflection that radially deflects and tensions an end portion of the hose against the nipple as established by an elastic modulus of the elastomer of the hose, and thereby seals the hose and the nipple against cold leakage.

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