Pipe joints or couplings – With means blocking release of holding means – Auxiliary latch
Patent
1978-06-16
1980-06-24
Callaghan, Thomas F.
Pipe joints or couplings
With means blocking release of holding means
Auxiliary latch
2853322, 285376, F16L 3724
Patent
active
042091918
ABSTRACT:
For large diameter tubular goods, especially pipe strings installed in underwater wells, the invention provides an improved quick make-and-break coupling of the type in which part of one rotation causes axial engagement between coupling lugs. Back-angled surfaces are provided in a fashion achieving radial forces, under both compression and tension, which oppose radial separation of telescopically engaged male and female connector members.
REFERENCES:
patent: 806665 (1905-12-01), Henderson et al.
patent: 815627 (1906-03-01), Oldham
patent: 2207005 (1940-07-01), Haas
patent: 3388752 (1968-06-01), Hanes et al.
patent: 3442536 (1969-05-01), Fowler
patent: 3989284 (1976-11-01), Blose
patent: 4113290 (1978-09-01), Miida
patent: 4165891 (1979-08-01), Sullaway et al.
Armco Inc.
Callaghan Thomas F.
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