Keyboard having keys with different heights

Details Keyboard having keys with different heights Keyboard having keys with different heights

1991-10-08

1993-12-28

Scott, J. R.

Registers

Keyboards

With total transfer to keyboard or the like

200 5A, H01H 1370, G06C 702

Patent

active

052742172

ABSTRACT:
A keyboard has keys arranged in parallel columns with all of the keys in a respective column projecting from a front plate the same distance. The keys of a first column are arranged to project a smaller distance from the front plate than the keys of an adjacent second column.

REFERENCES:
patent: 3803834 (1974-04-01), Reese
patent: 3860771 (1975-01-01), Lynn et al.
patent: 3879586 (1975-04-01), DuRocher et al.
patent: 3928960 (1975-12-01), Reese
patent: 4128889 (1978-12-01), Ojima et al.
patent: 4974183 (1990-11-01), Miller
patent: 5122786 (1992-06-01), Rader
Conway, D. L. "Contoured Keyboard," IBM Technical Disclosure Bulletin, vol. 22, No. 3, Aug. 1979, pp. 1276-1277.

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