Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1980-06-30
1982-06-29
Edmundson, F.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
C25D 2110
Patent
active
043371353
ABSTRACT:
A metal plating process and apparatus is disclosed and includes a plurality of pre-plating stations comprising tanks or reservoirs containing various cleaning and rinsing solutions. A pulse plating or gold flash station including a plating tank is provided after the pre-plating stations, and a plurality of post-plating stations or tanks are provided after the pulse-plating station. Rotatable barrels for containing work loads are carried along a path of travel from station to station along the process. Differential speed mechanisms are provided along the process so that the work load containers rotate at a slower rate of rotation while traveling through air than while the containers are disposed within the various tanks or stations along the process. The pulse-plating of the work load at the plating station takes place in a chemical bath while rotating the work load within the bath, controlling the chemistry of the bath including the gold concentration, controlling the duty cycle of the pulse-plating operation, controlling the rotation of the work load within the bath, and controlling such other parameters as the bath temperature.
REFERENCES:
patent: 1928949 (1933-10-01), O'Neill
patent: 2148552 (1939-02-01), Hannon
patent: 2187079 (1940-01-01), Hannon
patent: 3607712 (1971-09-01), Barton et al.
patent: 3687421 (1972-08-01), Kanazu
patent: 3855107 (1974-12-01), McInnes
patent: 4145268 (1979-03-01), Oehr
Guio Raphael
Quinton Carrol D.
Bunker Ramo Corporation
Camasto Nicholas A.
Edmundson F.
Hoffman John R.
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