Method of manufacturing a keyboard

Details Method of manufacturing a keyboard Method of manufacturing a keyboard

1974-12-16

1979-03-06

Esposito, Michael F.

Coating processes

Electrical product produced

29622, 29625, 29630C, 427152, 427272, 427275, B05D 512

Patent

active

041431790

ABSTRACT:
A method for manufacturing a keyboard which can be utilized in a keying structure is described. It consists of layering a flat fixed plate with a conductive paint, masking a preformed insulating rubber keyboard, laying the keyboard on the conductive paint surface and thereafter applying pressure to the rubber keyboard to the extent that certain portions of the rubber keyboard are put in contact with the conductive paint.

REFERENCES:
patent: 2751315 (1956-06-01), Staehle
patent: 2776235 (1957-01-01), Peck
patent: 2914437 (1959-11-01), Schriner
patent: 3099578 (1963-07-01), Hunter
patent: 3701317 (1972-10-01), Miyamoto et al.
Printed Circuit Techniques, National Bureau of Standards Circular 468, Nov. 15, 1947, pp. 12-13.

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