Pipe joints or couplings – With means blocking release of holding means – Auxiliary latch
Patent
1996-09-12
1998-01-13
Arola, Dave W.
Pipe joints or couplings
With means blocking release of holding means
Auxiliary latch
285319, 285321, 285423, F16L 1500
Patent
active
057070857
ABSTRACT:
A fluid coupling including a tube and a socket defined by a cylindrical counterbore in a housing. The cylindrical counterbore terminates at an annular seat and is interrupted by an annular first groove defining a first shoulder facing the annular seat and by an annular second groove defining a second shoulder facing the annular seat. The tube has an annular bead at one end which bears flush against the annular seat when the tube is plugged into the socket. A flexible retaining ring is mounted on the tube behind the bead. A plastic sleeve on the tube behind the flexible retaining ring has a cam at one end which radially expands the retaining ring to wedge the latter between the bead and the first shoulder. The retaining ring prevents dislodgment of the tube from the socket by reacting forces urging dislodgment substantially directly from the bead on the tube to the shoulder on the housing. A plurality of resilient barbs on the plastic sleeve lodge behind the second shoulder on the housing in the locking position of the sleeve to retain the sleeve in its locking position.
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Arola Dave W.
General Motors Corporation
Schwartz Saul
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