Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1996-07-09
1998-05-12
Gorgos, Kathryn L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204237, 204275, 204297R, 204297W, 205101, 205118, 205136, 205137, 205145, 205151, 205224, 205324, C25B 1500, C25D 1704, C25D 502, C25D 700
Patent
active
057500142
ABSTRACT:
An apparatus for simultaneously anodizing the heads of several aluminum pistons includes a plating tank with an array of apertures extending through one side wall, one aperture for each piston; a fixture on the wall providing a cylindrical bore aligned with each aperture adapted to receive a piston; and a plurality of actuators which, when pivoted and locked into alignment with the fixture bores, operate to secure individual pistons in their respective apertures. A masking/sealing assembly within each fixture bore ensures that each aperture is sealed upon the securing of a piston therein, with only the piston's head and peripheral land being placed in fluid communication with the interior of the plating tank. A remote storage tank provides a supply of an electrolyte which is circulated by a fluid supply network between the storage tank and the thus-sealed plating tank during electrolysis. After the desired coating is achieved, the electrolyte is drained from the tank. A supply of rinse water is then directed through the plating tank to rinse any remaining electrolyte from the pistons, whereupon the actuators are retracted and pivoted free, and the coated pistons are removed from their respective fixtures and masking/sealing assemblies.
REFERENCES:
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patent: 2745805 (1956-05-01), Jones, Jr.
patent: 3573176 (1971-03-01), Laznovsky
patent: 4118303 (1978-10-01), Gibbs
patent: 4443304 (1984-04-01), Eidschun
patent: 5032244 (1991-07-01), Bommier et al.
patent: 5173161 (1992-12-01), Gramm
patent: 5534126 (1996-07-01), Stadler et al.
Pernick Jeffrey R.
Stadler David M.
Gorgos Kathryn L.
International Hardcoat, Inc.
Wong Edna
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