Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1995-10-31
1996-12-31
Gorgos, Kathryn
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204285, 204297R, 205 70, 249134, 264220, 264226, 264259, 264154, 264156, 425394, 425411, C25D 100, C25D 1704, C25C 702, B29C 3340
Patent
active
055890431
ABSTRACT:
A two-part reusable mask to protect objects to be plated. The mask can be used for painting, chemical treatment or other treatments. By adjusting the shape of the mask, any object can be plated. In the case of coins or medallions, a two sided mask is formed. For use with coins, the coin is laid on a piece of glass. A dam is formed around the coin. A quantity of ultraviolet-sensitive liquid polymer is poured on and around the coin. The dam is covered with another piece of glass and the mold is clamped and cured. The mold is removed and an exact copy of the coin is left in the rubber. The rubber mask is then placed on a hard surface and the areas to be plated are cut out. After the mask is cut out, it is placed back over the coin and aligned. A piece of clear, hard plastic is bonded to the rubber using a clear adhesive. After the glue is cured, the plastic is cut out to match the corresponding pattern cut in the rubber. The mask is then ready to use. An electrode may be implanted in one of the masks if desired, to improve plating. Also, clamping surfaces may be added to the outside of the mask as desired.
REFERENCES:
Dow Corning, "Greater Versatility in Design and Production with Silastic RTV", pp. 1-7.
Gorgos Kathryn
Tavella Michael J.
Wong Edna
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