Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1996-10-08
1998-06-16
Gellner, Michael L.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200 5R, 400490, H01H 926, B41J 508
Patent
active
057674639
ABSTRACT:
The present invention provides a keyboard for typewriters, computers, and similar machines with improved ergonomics of control and a lower overall profile for the keyboard without a reduction in the range of key travel. The keyboard of the present invention includes a support base with a plurality of key shafts protruding outwardly from the support base. The key shafts are angled relative to the support base, for instance at a substantially 45 degree angle, and slanted away from a user of the keyboard. A keycap with a key guide slidably disposed about each key shaft is included wherein each keycap has an angled travel axis longitudinally along the key shaft. A plurality of switching elements is coupled to the support base with a switching element disposed beneath each key shaft. The keycap is moveable down and toward the user along the angled travel axis to operate the switching element. The activation surface of the keycap is slanted down and away from a user; for instance, the activation surface is substantially perpendicular to the travel axis wherein improved ergonomics of control is provided as well as a smaller keyboard without a reduction in the key travel range.
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"Ergonomic Test of the KINESIS Keyboard," Global Ergonomic Technologies, Inc., prepared by Wanda Smith, President, and Dan Cronin, Engineer, Dec. 16, 1992.
Dell USA L.P.
Gellner Michael L.
Hayes Michael J.
Tsirgotis M. Kathryn Braquet
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