Keyboard switch

Details Keyboard switch Keyboard switch

1983-04-06

1985-02-26

Pellinen, A. D.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200292, H01H 900

Patent

active

045019380

ABSTRACT:
A keyboard switch includes a lower-electrode insulating sheet provided with an electrode pattern formed by arranging lower electrodes at given distances, each of the lower electrodes being composed of a pair of electrodes having interfitted teeth; and an upper-electrode insulating sheet provided with an electrode pattern formed by arranging a plurality of lines of rectangular upper electrodes so that each of the rectangular upper electrodes crosses the corresponding pair of teeth of the electrodes of the lower electrodes at right angles.

REFERENCES:
patent: 4228329 (1980-10-01), Inose et al.
patent: 4317013 (1982-02-01), Larson

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