Joints for tubular members

Details Joints for tubular members Joints for tubular members

1987-07-21

1989-01-10

Callaghan, Thomas F.

Pipe joints or couplings

With assembly means or feature

Guide

285175, 285334, F16L 1500

Patent

active

047969237

ABSTRACT:
The invention provides a joint between two tubes comprising a box at one end of one tube and a pin at one end of the other tube, the pin being provided on its external surface with a threadless zone at its nose serving as a stabbing guide for entry of the pin into the box, a parallel threaded load carrying zone, and an inclined threaded locking and load carrying zone; the box being provided on its inner surface with a parallel threaded load carrying zone, and an inclined threaded locking and load carrying zone, both generally matching and engageable with the corresponding zones of the pin, and an unthreaded stabbing guide zone axially disposed between said parallel load carrying zone and said inclined locking and load carrying zone of the box; the parallel load carrying zone in the box serving as an extension of the stabbing guide provided between the parallel load carrying zone and the inclined locking and load carrying zone for the nose of the pin, and the two threaded zones in the box being so separated that the parallel threaded load carrying zone engages with the corresponding threaded zone on the pin firstly on make-up of the joint.

REFERENCES:
patent: 1637628 (1927-08-01), Weisgerber
patent: 1973848 (1934-09-01), Duffy
patent: 2587544 (1952-02-01), Sneddon
patent: 3917321 (1975-11-01), Rodgers
patent: 4429904 (1984-02-01), Reimert
patent: 4522431 (1985-06-01), Reimert
patent: 4537429 (1985-08-01), Landriault
patent: 4601491 (1986-07-01), Bell, Jr. et al.

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