Rigid pipe connector with lock elements and method of making the

Details Rigid pipe connector with lock elements and method of making the Rigid pipe connector with lock elements and method of making the

1977-05-04

1978-11-07

Schroeder, Werner H.

Pipe joints or couplings

With assembly means or feature

285381, 285328, 29446, 29525, F16L 3500

Patent

active

041242327

ABSTRACT:
A pipe connector has a pin initially stabbed into a box, the pin and box then being axially loaded together at confronting transverse surfaces while the pin and box are pressurized to expand the box and compress the pin, so that when the pressure is relieved a pressure energized shrink fit is provided between the pin and box and the connector is rendered rigid to enhance tensile, compressive and bending strength and provide a fluid tight joint useful in making up lengths of pipe such as piles or pipelines, locking elements or coengageable ratchet teeth or gripping means on the tapered surfaces, automatically locking the pin and box together to prevent separation of the transverse surfaces and hold the pin in compression and the box in tension.

REFERENCES:
patent: 1344774 (1920-06-01), Stafford et al.
patent: 2147343 (1934-02-01), Hokanson
patent: 2671949 (1954-03-01), Welton
patent: 2934360 (1960-04-01), Castellanos
patent: 3080179 (1963-03-01), Huntsinger
patent: 3114566 (1963-12-01), Coberly et al.

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