Threaded coupling

Details Threaded coupling Threaded coupling

1983-05-10

1985-01-29

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

Guide and support

285 39, 285 91, 285137A, 285317, 285353, F16L 3500

Patent

active

044961731

ABSTRACT:
A coupling for first and second pipe sections where end portions on the first and second pipe sections are shaped and dimensioned so that the end portion of the first pipe section can be inserted in the end portion of the second pipe section. Penetration of the first section is limited relative to the second section. The outer surface of the end of the second pipe section adjacent to the other section includes at least a first set of continuous helical spin-up threads. A female union box is connected to the first section, the inner surface of the box including at least a first set of continuous helical spin-up threads interengaged with the set of threads on the second pipe section, the union box further including an additional set of helical power threads. A power ring is located around the first section and includes a set of helical power threads interengaged with the helical power threads on the union box. The power ring operably engages the first section for applying a preload force to the coupling connection when the power threads are interengaged and prevents the pipe sections from moving axially relative to each other. A fluid tight seal is provided between the pipe sections.

REFERENCES:
patent: 986818 (1911-03-01), Graham
patent: 2562294 (1951-07-01), Cahenzli
patent: 2645506 (1953-07-01), Stugis
patent: 3353847 (1967-11-01), Brown
patent: 3948545 (1976-04-01), Bonds
patent: 4165891 (1979-08-01), Sulloway et al.
patent: 4185856 (1980-01-01), McCaskill
patent: 4280719 (1981-07-01), Daniel et al.

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