Pipe coupling for well casing

Details Pipe coupling for well casing Pipe coupling for well casing

1989-06-01

1990-04-10

Callaghan, Thomas F.

Pipe joints or couplings

Molded joint

Interlocked

285355, F16L 1500

Patent

active

049154265

ABSTRACT:
A pipe coupling for a stainless steel well casing includes a square threaded male member which is received within a square threaded female member so that the coupling is initially loose. A TEFLON seal is provided to retain the fluid being pumped within the pipe. Each member has a shoulder which is abutted by the end of the other member in order to lock the members in rigid relationship once the coupling is completely tightened.

REFERENCES:
patent: 245438 (1881-08-01), Boyd
patent: 1168196 (1916-01-01), Hall
patent: 1460769 (1923-07-01), Saunders
patent: 2308066 (1943-01-01), Evans
patent: 3245701 (1966-04-01), Leopold, Jr. et al.
patent: 4003669 (1977-01-01), Fenske et al.
patent: 4595219 (1986-06-01), Lenze et al.
patent: 4735444 (1988-04-01), Skipper

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