Metal working – Method of mechanical manufacture – Converting
Patent
1977-08-01
1978-09-12
Engle, Samuel W.
Metal working
Method of mechanical manufacture
Converting
B22D 1910
Patent
active
041125720
ABSTRACT:
Breaks in the lining of a protectively lined reactor vessel are repaired without introducing unwanted electrical paths through the vessel. Specifically, the breaks are repaired using a plug comprising an insulated anchor stud anchored into the portion of the metal support wall underlying the break; a sealing gasket disposed on the portion of the protective lining surrounding the break; a washer disposed outside the sealing gasket; and a clamping arrangement mechanically coupling the washer and the anchor stud for clamping the gasket onto the protective lining throughout a path surrounding the break. In preferred embodiments, the insulating stud is a threaded cylindrical stud anchored into the wall by threading into a correspondingly threaded aperture, the sealing gasket is a corrosion-resistant, insulating plastic material such as a fluorocarbon, the washer is concave with respect to the gasket and filled with insulating cement, and the clamping arrangement is either a nut threadedly engaged to the insulating stud or a nut in combination with a second stud attached to the first. Reactor vessels using such repair plugs can utilize dip tubes of dissimilar metal without premature deterioration.
REFERENCES:
patent: 2824663 (1958-02-01), Fischer
patent: 2890845 (1959-06-01), Kiekhgefer
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patent: 2935552 (1960-05-01), Forman
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patent: 3555414 (1971-01-01), Diechelmann
patent: 3593612 (1971-07-01), Schulze
patent: 3831085 (1974-08-01), Kratavil
patent: 3858114 (1974-12-01), Voallmin
Lerman Michael J.
Schlosberg Seymour
Cangialosi S. A.
De Dietrich (USA) Inc.
Engle Samuel W.
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