Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...
Patent
1993-07-08
1995-02-28
Burr, Edgar S.
Typewriting machines
Key-board or key lever-actuating mechanism
Key-board including keys grouped to facilitate positioning...
400486, 400 82, B41J 510
Patent
active
053931505
ABSTRACT:
A keyboard arrangement in which a conventional keyboard is divided into two sections, each of which is separately supported on a joint which is freely rotatable and pivotable. The joint in turn may have a supporting base adapted to rest on or to be clamped to a table top or other support surface. Alternatively, the joints supporting the respective keyboard sections may be mounted on a supporting based member, which may have an adjustable width so that the separation between the two keyboard sections can be varied. The sections may have palm rests thereon.
REFERENCES:
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patent: 4483634 (1984-11-01), Frey et al.
patent: 5004196 (1991-04-01), Gross
patent: 5044798 (1991-09-01), Roylance et al.
patent: 5067834 (1991-11-01), Szmanda et al.
patent: 5073050 (1991-12-01), Andrews
patent: 5122786 (1992-06-01), Rader
Burr Edgar S.
Hendrickson Lynn D.
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