Pipe joints or couplings – Packed – Plural seals
Patent
1987-06-10
1988-03-01
Callaghan, Thomas F.
Pipe joints or couplings
Packed
Plural seals
285353, 285387, 285318, F16L 1902
Patent
active
047281308
ABSTRACT:
A locking assembly for securing the connection between a push-on fitting having a flared end fitted into a cage and surrounded by a garter-type coiled spring housed within the cage on a pipe having a plurality of O-rings sealing the connection between the push-on fitting and the pipe. The assembly comprises an axially split male fitting and an axially split locking nut. The two halves of the axially split male fitting are sized to snugly encircle the push-on fitting with the ends of the two halves of the male fitting resting against the flared end of the push-on fitting and thus forcing the coiled spring away from the push-on fitting. The two halves of the axially split locking nut snugly encircle the cage housing the coiled spring while an internal face of the two halves of the nut engage and securely lock the position of the two halves of the male fitting. The two halves of the locking nut are then securely joined together by a pair of screws threaded into aligned threaded holes in both halves of the locking nut.
REFERENCES:
patent: 2366341 (1945-01-01), Lappin
patent: 3181896 (1965-05-01), Russell
patent: 3428337 (1969-02-01), Read
patent: 3488073 (1970-01-01), Wold
patent: 3679237 (1972-07-01), De Angelis
patent: 4055359 (1977-10-01), McWethy
patent: 4150845 (1979-04-01), Riuli et al.
patent: 4343496 (1982-08-01), Petranto
patent: 4580788 (1986-04-01), Rabe et al.
Callaghan Thomas F.
Johnson Merrill N.
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