Measuring and testing – With fluid pressure – Clamp – plug – or sealing feature
Patent
1979-05-08
1981-07-07
Goldberg, Gerald
Measuring and testing
With fluid pressure
Clamp, plug, or sealing feature
73 491, 277205, 279110, F16L 5510, G01M 328
Patent
active
042767717
ABSTRACT:
A hydrostatic testing apparatus for capping an open end of a pipe, tube or cylinder is disclosed.
A seal is provided to facilitate a fluid-tight seal between the pipe and the body. The seal has relatively long lips which facilitate a sealing engagement upon dirty or rough pipe surfaces. The seal is pre-stressed by lugs to sealingly engage the pipe under low pressure conditions.
Adaptors, a centralizer having replaceable cam pieces, and replaceable jaw tooth segments facilitate the testing of a variety of pipe sizes and shapes with a single apparatus. An air purge valve is provided, in cooperation with passageways, to facilitate the expungement of air and gas from the interior of the body and pipe.
A jaw design is disclosed which permits the side of the jaw to evenly grip the pipe by providing a pivotal attachment between the jaw and translator that is parallel to the axis of the pipe. The jaw is further attached to the radial translator at a point near the rear of the jaw in order to evenly distribute the gripping force across the face of the jaw.
REFERENCES:
patent: 2692155 (1954-10-01), Gheen et al.
patent: 3434337 (1969-03-01), Goeke
patent: 3841647 (1974-10-01), Cooper
patent: 4077250 (1978-03-01), Wesch
Goldberg Gerald
Roskos Joseph W.
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