Keyboard separable into two parts in which an angle between its

Details Keyboard separable into two parts in which an angle between its Keyboard separable into two parts in which an angle between its

1996-06-12

1997-07-29

Hilten, John S.

Typewriting machines

Key-board or key lever-actuating mechanism

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

235145R, 400682, B41J 510

Patent

active

056516223

ABSTRACT:
A keyboard separable into two parts in which an angle between its two parts can be changed includes: a left keyboard having a first connection ring attached thereto, the left keyboard being separable to the left side from a center position through a rotative motion of the first connection ring; a right keyboard having a second connection ring attached thereto, the right keyboard being separable to the right side from a center position through a rotative motion of the second connection ring; a hinge ring disposed between the first connection ring of the left keyboard and the second connection ring of the right keyboard for causing the right and left keyboards to rotate in constant angular increments; and a main plate having the connection rings of the right and left keyboards attached thereto, the main plate supporting the right and left keyboards. The separation of the right and left keyboards can reduce fatigue of the wrists or shoulders when utilizing the keyboard for long periods and, as a result, work productivity is increased.

REFERENCES:
patent: 5198991 (1993-03-01), Pollitt
patent: 5228791 (1993-07-01), Fort
patent: 5267127 (1993-11-01), Pollitt
patent: 5318367 (1994-06-01), Braun et al.
patent: 5342005 (1994-08-01), Szmanda et al.
patent: 5361082 (1994-11-01), Chung
patent: 5388921 (1995-02-01), Chung
patent: 5454652 (1995-10-01), Huellemeier et al.
patent: 5519570 (1996-05-01), Chung

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