Pup joint with integral wing nut retention shoulder

Details Pup joint with integral wing nut retention shoulder Pup joint with integral wing nut retention shoulder

1997-10-31

1998-08-11

Nicholson, Eric K.

Pipe joints or couplings

With assembly means or feature

With holding means functioning only during transportation...

285354, 285387, 285388, F16L 19025

Patent

active

057916934

ABSTRACT:
A pup joint is provided which comprises a length of pipe, a female sub integral with one end of the pipe and having external threads formed thereon, a male sub integral with the other end of the pipe, a wing nut for threadedly connecting the male sub to the female sub, a set of retainer segments for retaining the wing nut on the pup joint, and a retention shoulder formed on the male sub to maintain the wing nut and retainer segments on the male sub. In a preferred embodiment of the invention, the pipe and the male and female subs are comprised of a single forging, and the retention shoulder is formed by machining the male sub.

REFERENCES:
patent: 1186021 (1916-06-01), Mezfger
patent: 2298109 (1942-10-01), Frank
patent: 3751077 (1973-08-01), Hiszpanski
patent: 4116477 (1978-09-01), Wahoski
patent: 4124234 (1978-11-01), Clark
patent: 4575044 (1986-03-01), Gentry
patent: 4648634 (1987-03-01), Kelch
patent: 4877270 (1989-10-01), Phillips
patent: 5160174 (1992-11-01), Thompson
patent: 5362109 (1994-11-01), Pacnt

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