Threaded pipe connection having wedge threads

Details Threaded pipe connection having wedge threads Threaded pipe connection having wedge threads

1985-11-08

1987-11-03

Callaghan, Thomas F.

Pipe joints or couplings

With strain relief

Extension of socket or sleeve

285334, 2853323, F16L 1500

Patent

active

047039540

ABSTRACT:
A threaded pipe connection is disclosed of the wedge-shaped thread type that avoids high stress concentrations in the box between the first thread and the end of the box by making the length of the box between the first thread and the end of the box equal to or greater than 5% of the pipe diameter and by providing clearance between the crest of the first full thread on the box and the root of the last thread on the pin and between the crest of the last full thread on the pin and the root of the first full thread on the box.

REFERENCES:
patent: 1817808 (1931-08-01), Eaton
patent: 2051499 (1936-08-01), Siegle
patent: 2122757 (1938-07-01), Scott
patent: 2177100 (1939-10-01), Frame
patent: 2179202 (1939-11-01), Simpson
patent: 2450452 (1948-10-01), Scott
patent: 2772102 (1956-11-01), Webb
patent: 3126214 (1964-03-01), Wong et al.
patent: 3635500 (1972-01-01), Kirby
patent: 3989284 (1976-11-01), Blose
patent: 4407527 (1983-10-01), Reimert
patent: 4521042 (1985-06-01), Blackburn et al.
patent: 4600224 (1986-07-01), Blose
patent: 4629222 (1986-12-01), Dearden et al.

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