Lightweight integral pup joint with split female sub

Details Lightweight integral pup joint with split female sub Lightweight integral pup joint with split female sub

1985-02-06

1987-01-06

Callaghan, Thomas F.

Pipe joints or couplings

Packed

Screw thimble-gland

285387, F16L 1902

Patent

active

046341544

ABSTRACT:
A lightweight pup joint comprising a length of pipe with male and female union subs on the ends and having integral metallic fluid contacting components. The pipe is formed with a minimum wall thickness required for the intended pressure rating and includes a radially enlarged portion on one end to form a male sub. The other end of the pipe includes a small radial flange sized so a union nut can be moved over the flange. A split female sub is assembled over the flange and held together by a snap ring. An annular sealing member seals gaps between portions of the female sub, seals an interface between the flange and the female sub, and seals a gap between the flange and a male sub of an adjacent pipe. At least one ear on the pipe fits into a slot in the female sub to prevent rotation of the female sub when the union nut is threaded onto the female sub.

REFERENCES:
patent: 260966 (1882-07-01), Frey
patent: 473462 (1892-04-01), Hogan
patent: 498876 (1893-06-01), Bells
patent: 944877 (1909-12-01), Koschinski
patent: 2137137 (1938-11-01), Goldacker
patent: 2967068 (1961-01-01), Gressel
patent: 3428337 (1969-02-01), Read
patent: 3679237 (1972-07-01), De Angelis
patent: 3984130 (1976-10-01), Berger et al.
patent: 4007953 (1977-02-01), Powell
patent: 4291906 (1981-09-01), Donbavand
patent: 4343496 (1982-08-01), Petranto

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