Phillip A Sandford, 98941 Kirkhill Ln, Lake Forest, IL 60045
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Us Patents
Quick-Connect Tubing Coupling
US Patent:
3933378, Jan 20, 1976
Filed:
Nov 29, 1974
Appl. No.:
5/528108
Inventors:
Phillip A. Sandford - Highland Park IL
John D. York - Connersville IN
John D. York - Connersville IN
Assignee:
Ford Motor Company - Dearborn MI
International Classification:
F16L 3900
US Classification:
285319
Abstract:
A quick-connect tubing coupling comprising a cup-shaped cage externally attached to a first tube with an end portion of the tube concentrically contained within the cage. The inside diameter of the cage is sufficiently greater than the outside diameter of the tube portion contained therein to provide a space therebetween. The cage has a plurality of axially extending cantilevered leaf springs projecting radially inwardly toward the first tube portion, some of the leaf springs being longer than the others. A second tube is outwardly cupped at one end to encapsulate an O-ring, the cupped end portion of the second tube being concentrically received between the cage and the first tube end portion. The cupped end of the second tube provides a shoulder behind which the longer leaf springs can lock with the O-ring in a sealed mode or behind which the shorter leaf springs can lock with the first and second tubes axially displaced to provide a pressure relief vent. Interengageable positioning means on the first and second tubes provide an anti-rotational interlock therebetween.
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