Computer graphics processing and selective visual display system – Display peripheral interface input device – Including keyboard
Patent
1991-07-08
1994-09-27
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Display peripheral interface input device
Including keyboard
400489, 400488, B41J 508, H01H 1370
Patent
active
053510666
ABSTRACT:
An adjustable keyboard for electronic instruments having a pair of demi-boards which are extendable from a retracted, flat position to an extended, tetrahedal position wherein the distal side of one of the demi-boards is located closer to the other demi-board than the proximate side, the first and second demi-board planes intersect with the base plane to form an acute angle, the first and second demi-board planes intersect with each other at an apex intersecting line being in non-parallel alignment with the base plane and the first and second demi-board planes and the base plane intersect at an intersecting point in space on the distal side of the base member. A split spacebar may be actuated by movement about an axis parallel with the longitudinal axis of the demi-boards in either direction from a normal position and also on lateral movement along the said longitudinal axis. Adjustable hand rests are provided which may be raised or lowered with respect to the keyboard and which may be adjusted laterally to adjust the distance between each of a pair of hand contacting surfaces and a line laterally bisecting the keyboard.
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Hepworth Allen B.
Hoyle Keith W.
Rucker Lance M.
Ergologic Enterprises Inc.
Farnandez Kara
Oberley Alvin E.
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