Ergonomic keyboard apparatus with left and right key section sep

Details Ergonomic keyboard apparatus with left and right key section sep Ergonomic keyboard apparatus with left and right key section sep

1993-07-13

1994-12-13

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

Key-board including keys grouped to facilitate positioning...

400472, 400486, 345168, 341 22, B41J 510

Patent

active

053724410

ABSTRACT:
A keyboard arrangement with a pair of angularly disposed, spaced apart groups of character keys dedicated for operating use respectively by the left hand and the right hand of a user. A space bar key is operable by either thumb of the user and bridges between the two groups of character keys. The rows of keys in each group are staggered, and each key bears character indicia disposed at an angle to the transverse direction of its group of keys.

REFERENCES:
patent: 3698532 (1972-10-01), Dodds
patent: 4121048 (1978-10-01), Dev Choudhury
patent: 4669903 (1987-06-01), Herzog et al.
patent: 5040757 (1991-08-01), Benaway
patent: 5119078 (1992-06-01), Grant
patent: 5129747 (1992-07-01), Hutchison
patent: 5143462 (1992-09-01), Klauber
patent: 5145270 (1992-09-01), Darden
patent: 5156475 (1992-10-01), Zilberman
patent: 5163646 (1992-11-01), Engelhardt

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