Chemistry: electrical and wave energy – Processes and products
Patent
1982-01-04
1983-03-08
Tufariello, T. M.
Chemistry: electrical and wave energy
Processes and products
204224R, C25D 502, C25D 1706
Patent
active
043760171
ABSTRACT:
A pair of opposite surfaces (17 and 18) of shaped, digitated edge features (12) of a metal strip (11) are selectively treated in an electrolytic treating cell (32) while adjacent edge surfaces (22 and 23) of such features are shielded from exposure to the treatment. The desired treatment, such as a gold plating process, is accomplished on two opposite, outwardly facing surfaces of a strip of center carried pins by engaging the strip with lateral masking belts having complementary edge features. The strip and the masking belts are passed through a treating cell between paired off electrodes (40 and 41). An electric field between each electrode and the respective, adjacent surface of the strip (11) accomplishes the treatment. Slotted openings through the masking belts relieve pressure differentials in the electrolyte on either side of the strip to minimize fluid flow through gaps between the digitated strip and the masking belts.
REFERENCES:
patent: 4186062 (1980-01-01), Eidschun
patent: 4224117 (1980-09-01), Edwards
patent: 4249689 (1981-02-01), Voytko
Schellin W. O.
Tufariello T. M.
Western Electric Co. Inc.
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