Crystal plating method

Details Crystal plating method Crystal plating method

1982-04-19

1983-12-06

Hoffman, James R.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

427 451, 427100, B05D 314

Patent

active

044193793

ABSTRACT:
A crystal plating device and method of plating crystals in which a crystal to be plated and thereby set at a desired frequency is placed in an external removable holder or slug for insertion into a chamber of a plating device. The device is connected to a vacuum pump which is activated after the slug is loaded. Spring loaded filament posts carry a filament of precious metal such as gold or silver. The crystal is oscillated at a predetermined frequency prior to energizing the filament to evaporate or atomize the metal which plates the crystal and sets its frequency identical to that of the oscillator.
The slug is externally loaded and can carry different size crystals. It is fitted with masks to accurately direct the deposit of the metal upon either or both sides of the crystal. After plating the slug is easily removed from the plating device.

REFERENCES:
patent: 2765765 (1956-10-01), Pigler et al.

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