Carbon coated electrical circuit members

Details Carbon coated electrical circuit members Carbon coated electrical circuit members

H - Electricity

04

R

306/304, 349/64

H04R 1/00 (2006.01) H04R 21/00 (2006.01)

Patent

CA 1161543

CARBON COATED ELECTRICAL CIRCUIT MEMBERS Abstract of the Disclosure A layer of finely divided carbon, colloidal graphite, in a carrier, for example a vinyl polymer, is bonded to a support member. The layer provides a conductive layer which is extremely effective as a contact surface, both as a static contact as in electrodes of a carbon microphone or as a dynamic contact surface as in a pushbutton switch. It can also provide a conductor path in an electrical circuit. It can be used to replace gold plating and use of silver as a conductor.

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