Keyboard apparatus

Details Keyboard apparatus Keyboard apparatus

1976-12-06

1978-04-25

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200159B, 200329, H01H 1370

Patent

active

040864510

ABSTRACT:
A low profile keyboard having a flat cover to enhance appearance and facilitate cleaning. Tactile feedback of switch actuation is provided by using snap acting discs for the switches and tactile feedback members interposed between the discs and the cover. Feedback members of several forms are shown including a discrete member for each disc as well as a member for several discs.

REFERENCES:
patent: 3584162 (1971-06-01), Krakinowski
patent: 3590195 (1971-06-01), Driver
patent: 3600528 (1971-08-01), Leposavic
patent: 3684842 (1972-08-01), Boulanger
patent: 3693775 (1972-09-01), Brooks et al.
patent: 3856998 (1974-12-01), Sims, Jr.
patent: 3952174 (1976-04-01), Boulanger et al.
Harris et al.; IBM Tech. Disc. Bull; "Force Concentrator for Touch Sensitive Panel Using Snap-Action Switches;" vol. 19, No. 1, June 1976, p. 238.
Johnson, Jr.; IBM Tech. Disc. Bull.; "Keyboard with Changeable Encoding and Key Designation;" vol. 13, No. 7, Dec. 1970, pp. 2041, 2042.

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