Female coupling with staple lock

Details Female coupling with staple lock Female coupling with staple lock

1979-03-05

1981-01-13

Callaghan, Thomas F.

Pipe joints or couplings

Essential catch

24211L, F16L 3712

Patent

active

042446082

ABSTRACT:
A female coupling adapted for use with prior art male stems of the collared type, the coupling having a stem-receiving bore and two substantially parallel slots that intersect circumference portions of the bore. Two leg members of a generally U-shaped staple are inserted in and reciprocally movable in the coupling slots. Leg members have facing, substantially centrosymmetrical slots that open with the intersecting circumference portions of the bore when the staple is in the open and unlocked position. Locking tab portions of the leg members intersect the bore at the intersecting circumference portions when the leg members are reciprocated to a lock position and a spring means interconnecting the leg members retain free ends of the leg members against the coupling.

REFERENCES:
patent: 2021241 (1935-11-01), Mall
patent: 2092243 (1937-09-01), Breese
patent: 3534988 (1970-10-01), Lindsey
patent: 3753582 (1973-08-01), Graham
patent: 3929356 (1975-12-01), DeVincent et al.
patent: 4009896 (1977-03-01), Brewer
IBM, Technical Disclosure Bulletin, vol. 20, No. 9, Feb. 1978, pp. 3662, 3663.

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