Method of an apparatus for selectively surface-treating preselec

Details Method of an apparatus for selectively surface-treating preselec Method of an apparatus for selectively surface-treating preselec

1981-06-29

1982-12-21

Beck, Shrive P.

Chemistry: electrical and wave energy

Processes and products

204 27, 204224R, 118301, 118504, 427282, 427421, 427424, C25D 502, C25D 1700

Patent

active

043648010

ABSTRACT:
The treatment of a selected area of a body by a solution is obtained by ejecting the solution towards the body and ejecting gas to control the flow of solution to restrict contact between solution and body to the selected area. The invention is particularly concerned with the plating of part of one surface of a rectangular cross-sectioned pin, for example a terminal pin. A particular example is the gold plating of one end of one surface of a rectangular terminal pin, while preventing plating of the other surfaces. Pins, in bandoliers, are carried through a tank, with nozzles on each side. Solution is ejected at one side and a gas at the other side. The gas flows round the pins and restricts wetting to one surface of the pin.

REFERENCES:
patent: 2088542 (1937-07-01), Westin
patent: 2750332 (1956-06-01), Miller
patent: 3178305 (1965-04-01), Ward
patent: 3223549 (1965-12-01), Fredley et al.
patent: 3835017 (1974-09-01), Mentone et al.
patent: 4032414 (1977-06-01), Helder et al.

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