Tubular threaded connector joint with separate interfering locki

Details Tubular threaded connector joint with separate interfering locki Tubular threaded connector joint with separate interfering locki

1990-01-05

1991-09-03

Nicholson, Eric K.

Pipe joints or couplings

Particular interface

Tapered

285355, F16L 2500

Patent

active

050446762

ABSTRACT:
A connecting joint for connecting two tubular members together has a pin and a box, each containing conical threaded sections. The pin and the box each has a locking section for locking the pin and box together during make-up. Each locking section has at least one circumferential profile with a crest. The crests are dimensioned so that they interfere with each during make-up. A shoulder locates below each crest. This shoulder is conical and opposite to the taper of the threaded section. The decree of taper of this shoulder is high relative to the longitudinal axis of the pin and box, requiring a large breakout force.

REFERENCES:
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patent: 4865364 (1989-09-01), Nobileau
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