Electronic keyboard

Details Electronic keyboard Electronic keyboard

1988-06-17

1989-04-04

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200517, 200345, 235145R, 400479, H01H 1370, G06C 702, G06F 302

Patent

active

048188280

ABSTRACT:
A full sized electronic keyboard with full travel keybuttons provides switches for controlling an electronic typewriter or for controlling other devices. The keyboard has a structure designed for reducing part count and switch component part size and for simplifying assembly to minimize manufacturing cost. The structure has integral one piece parts for accommodating several keybutton actions. The integral one piece parts include a main frame, a sheet steel spring, a rubber dome switch member, and a printed circuit switch panel.

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patent: 4419555 (1983-12-01), Kim
patent: 4440515 (1984-04-01), Nassimbene
patent: 4493952 (1985-01-01), Kaleida

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