Touchpad keyboard

Details Touchpad keyboard Touchpad keyboard

1982-07-14

1984-03-27

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 86R, 200159B, 200DIG1, 200 52R, 340365R, 361288, H01H 1370

Patent

active

044396473

ABSTRACT:
An improved capacitive keyboard uses a standard printed circuit board provided in various locations with spaced conductor pairs. A conductive disc with a flat insulated lower surface is aligned above each conductor pair. All of the discs are suspended above the printed circuit board within apertures of a web of polymer foam material and held in position by a sheet of adhesive covered plastic that covers and adheres to the entire upper surface of the web and each of the discs.

REFERENCES:
patent: 2583813 (1952-01-01), Burke
patent: 3584162 (1971-06-01), Krukinowski
patent: 3654407 (1972-04-01), Kepner et al.
patent: 3696908 (1972-10-01), Gluck et al.
patent: 3699294 (1972-10-01), Sudduth
patent: 3797630 (1974-03-01), Zilkha
patent: 3830991 (1974-08-01), DuRocher
patent: 3932722 (1976-01-01), Obata et al.
patent: 3965399 (1976-06-01), Walker, Jr. et al.
patent: 3973091 (1976-08-01), Kaminski
patent: 4054944 (1977-10-01), Lou
patent: 4090045 (1978-05-01), Marsh

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