Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...
Patent
1988-08-18
1990-04-03
Burr, Edgar S.
Typewriting machines
Key-board or key lever-actuating mechanism
Key-board including keys grouped to facilitate positioning...
400485, 400482, B41J 510
Patent
active
049135732
ABSTRACT:
An ergometrically improved computer of typewriter keyboard having the keys arranged and designated so that they are operated using finger movements which substantially mimic those currently employed by a typist using a standard "QWERTY" keyboard. The keyboard is divided into two separate sections, one of which is intended to be used by the right hand of the operator and the other of which is intended to be used by the left hand to permit independent positioning of the two sections relative to one another. Each keyboard section includes a housing having a raised central portion designed to ergometrically support and steady the hands of the operator, in a natural relaxed position from which all of the keys may be operated without significant hand movement. The fingers and thumb are positioned in respective cavities each having a plurality of push button key switches arranged therein for engagement by the thumb and fingers, with a minimal and unique finger movement required to actuate any key. Each key touches a different part of each finger, providing differential tactile feedback. The fingers and thumbs never need to be moved from the cavities which eliminates all "float", and the hands are continually supported in one comfortable position. Extensive utilization of the thumbs is provided. The device is smaller and more versatile than a conventional keyboard.
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Burr Edgar S.
Keating Joseph R.
Ptak LaValle D.
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