Measuring and testing – With fluid pressure – Leakage
Patent
1992-06-10
1993-11-23
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 40, G01M 328
Patent
active
052633624
ABSTRACT:
A pair of semcircular jaws seal against the outer periphery of a pipe adjacent a butt weld joint in the pipe. The jaws have annular pressure rims that apply mechanical pressure against the outer surface of the pipe; and the jaws provide an annular manifold cavity between the pressure rims through which high gas pressure is applied against the joint and adjacent areas of the pipe, all for the purpose of slightly deforming the pipe and opening up any fissure that may exist by reason of an imperfect joint. In a modified form, a cylindrical shroud carries an annulus of balls for supporting against and applying deforming pressure on side portions of the pipe as the shroud is rotated around the pipe.
REFERENCES:
patent: 2817230 (1957-12-01), McCully
patent: 3358497 (1967-12-01), Hauk
patent: 4099405 (1978-07-01), Hauk et al.
patent: 4194389 (1980-03-01), Laging
patent: 4513605 (1985-04-01), Hawerkamp
patent: 4727749 (1988-03-01), Miller et al.
patent: 4860796 (1989-08-01), Hagin
patent: 4929293 (1990-05-01), Osgar
Adair, Jr. Robert M.
Karl Randy L.
Rios Raul (Paul) A.
Walsh Matthew E.
Fluoroware, Inc.
Texas Instruments Incorporated
Williams Hezron E.
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