Tubular connection having a parallel chevron thread

Details Tubular connection having a parallel chevron thread Tubular connection having a parallel chevron thread

1983-12-23

1986-07-15

Husar, Cornelius J.

Pipe joints or couplings

Particular interface

Tapered

2853324, 285390, 285333, 411411, 411423, F16L 1500

Patent

active

046002251

ABSTRACT:
A thread form is shown for a tubular connection of the type having a pin member adapted to be made up with a box member to form a pipe joint. The pin member has pin threads with thread crests and thread roots which are adapted to be made up with a mating box member having a complimentary thread structure. The pin thread crests are formed between a stab flank and a load flank of the pin thread. A pin thread has a chevron-shaped load flank for engaging a mating chevron-shaped load flank of the complimentary box member to provide a chevron type interfit between the load bearing flanks. The load flanks of the pin member includes an outer wall portion with a positive slope which provides additional clearance between the complimentary threads on the pin and box members during disassembly to prevent inadvertent hanging-up of the threads.

REFERENCES:
patent: Re30647 (1981-06-01), Blose
patent: 137777 (1919-08-01), Pickard
patent: 671274 (1901-04-01), Fischer
patent: 1474375 (1923-11-01), Moore
patent: 2543100 (1948-12-01), Engh
patent: 2893759 (1959-07-01), Blose
patent: 3069960 (1962-12-01), Baubles
patent: 3224799 (1965-12-01), Blose
patent: 3572777 (1969-05-01), Blose
patent: 4161332 (1979-07-01), Blose
patent: 4192533 (1980-03-01), Blose
patent: 4244607 (1981-01-01), Blose
patent: 4549754 (1985-10-01), Saunders et al.

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