Pipe joints or couplings – With means blocking release of holding means – Key or pin
Patent
1987-04-13
1988-08-23
Callaghan, Thomas F.
Pipe joints or couplings
With means blocking release of holding means
Key or pin
285315, 2511499, F16L 3722
Patent
active
047656573
ABSTRACT:
A quick connect-disconnect coupling for fluid lines has a tubular female member, a sleeve member which encircles and is moveable relative to that female member, a tubular plug which telescopes into one end of that female member, locking surfaces on that sleeve member and on that female member which prevent relative movement between that sleeve member and that female member until the tubular plug has been telescoped into that one end of that female member, and interacting surfaces on that female member and on that sleeve member which require progressive relative movement of that sleeve member and of that female member from a normal, plug-unlocked, fluid-off position to a plug-locked, fluid-on position and then back to that normal plug-unlocked, fluid-off position. The locking surfaces include a plurality of locking pins on one of the members, and a corresponding plurality of recesses in the other of those members; and each recess has an abutting notch at one side thereof which has a configuration that is complementary to one side of one of the locking pins. The plurality of locking pins and the corresponding plurality of notches coact to prevent any cold flowing or peening of the metal of those members, even if the coupling is dropped onto a hard surface from a substantial distance.
REFERENCES:
patent: 2736578 (1956-02-01), Rafferty
patent: 3106379 (1963-10-01), Sciuto et al.
patent: 3140072 (1964-07-01), Sciuto, Jr.
patent: 3589673 (1971-06-01), Cruse
patent: 4437647 (1984-03-01), Cruse
Callaghan Thomas F.
Foster Manufacturing Company
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