Compact keyed input device

Details Compact keyed input device Compact keyed input device

1996-12-17

1999-10-26

Mullen, Thomas

Coded data generation or conversion

Bodily actuated code generator

Including keyboard or keypad

36470915, 400485, H03K 1794

Patent

active

059736216

ABSTRACT:
In a keypad device of the type that includes a unique output function as a consequence of physically adjacent keys or key equivalents operated simultaneously: a continuous elastomeric material with integrally molded key cap structure identifying individual and combination keys of minimal height differential with a sealed cursor control device placed with the key matrix a indentation in a non-exposed side near the center of a plurality of individually actuatable key switches; individual key switches in excess of the number of individual key caps.

REFERENCES:
patent: 4400593 (1983-08-01), Kunz
patent: 4549279 (1985-10-01), Lapeyre
patent: 4634818 (1987-01-01), Hayes-Pankhurst et al.
patent: 4891777 (1990-01-01), Lapeyre
patent: 4912462 (1990-03-01), Washizuka et al.
patent: 4994992 (1991-02-01), Lapeyre
patent: 5612690 (1997-03-01), Levy
patent: 5691716 (1997-11-01), Crowley et al.
"Compact Keyboard", IBM Tech. Discl. Bulletin, vol. 13, No. 11, Apr. 1971.

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