Pipe joints or couplings – Essential catch – Coil spring
Patent
1996-07-15
1998-03-17
Ricci, John A.
Pipe joints or couplings
Essential catch
Coil spring
285308, 285321, F16L 3722, F16L 37084
Patent
active
057278210
ABSTRACT:
A fluid coupling has a male part that can be mated with a female part. The female part has an O-ring seal that seals with the outside of the male part. A helical retaining ring is located in a groove in the female part and engages behind a shoulder projecting from the male part. The groove has an inclined wall so that a withdrawing force applied to the male part causes the retaining ring to be forced into closer contact with the male part. A release ring extends around the female part at its forward end and is urged forwardly by a resilient wave washer. The release ring engages the retaining ring when it is pushed rearwardly so that the retaining ring is held away from the inclined wall enabling it to be expanded by the shoulder when the male part is withdrawn.
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patent: 5395140 (1995-03-01), Wiethorn
patent: 5419594 (1995-05-01), Nelms
patent: 5570910 (1996-11-01), Highlen
Ricci John A.
Smiths Industries PLC
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