Compressible/expandable keyboard with adjustable key spacing

Details Compressible/expandable keyboard with adjustable key spacing Compressible/expandable keyboard with adjustable key spacing

1990-10-09

1991-09-03

Burr, Edgar S.

Typewriting machines

Key-board or key lever-actuating mechanism

400477, 400489, 400492, 235145R, 200 5R, B41J 508

Patent

active

050447980

ABSTRACT:
An extensible and compressible keyboard for application in computer, calculator, typewriter, and other similar applications where storage space is a premium. The keyboard provides adjustable spacing between the keys whereby a compact storage unit is expanded to a full-size, full function, and normally spaced standard keyboard or, as importantly, to a size which best fits the fingers of an individual user.

REFERENCES:
patent: 3499515 (1970-03-01), Mikrut
patent: 3940758 (1976-02-01), Margolin
patent: 4597681 (1986-07-01), Hodges
patent: 4661005 (1987-04-01), Lahr
patent: 4739451 (1988-04-01), Kuba

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