Pipe connection

Details Pipe connection Pipe connection

1977-04-06

1978-10-24

Faw, Jr., Price C.

Pipe joints or couplings

Particular interface

Tapered

403343, F16L 1500

Patent

active

041218620

ABSTRACT:
A high pressure, antigalling, thread interference pipe connection for use with well pipe includes pin and box members, the thread pitch lines of which are curved at the entrance of the box member and at the nose of the pin member so that sharp corners on the threads at the end of one member do not engage the threads of the other mating member and, also, so that pressure due to thread interference is built up in a smooth fashion over several threads rather than as a sharp pressure spike created by the first threads of one member engaging the threads of the other mating member. In addition, the pitch diameters of the threads of the pin and box members are selected so that makeup of the pin and box members occurs only on full height threads.

REFERENCES:
patent: 1394791 (1921-10-01), Runyan
patent: 2062407 (1936-12-01), Eaton
patent: 2267923 (1941-12-01), Johnson
patent: 2793884 (1957-05-01), Jungblut
patent: 2909380 (1959-10-01), Hoye et al.
patent: 3079181 (1963-02-01), Van Der Wissel
patent: 3870351 (1975-03-01), Matsuki

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