Ergonomic keyboard input device

  • US 5,178,477 A
  • Filed: 06/06/1991
  • Issued: 01/12/1993
  • Est. Priority Date: 06/06/1991
  • Status: Expired due to Term
First Claim
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1. An ergonomic keyboard input device for the transmission of information by a human operator to an electronic system coupled with said device, comprising:

  • a keyboard organized with an array of transmission-actuation keys disposed generally to compliment the splayed underside-architecture of a user'"'"'s hand, said array includingfor each finger, a finger-associable cluster of input keys, each key in which is arranged facially to confront, in close proximity and in parallel planar relationship, one of various different, underside, finger-expanse portions of an associated, adjacent finger, thus to enable actuation of a selected one or more of said keys in said cluster via only slight, gestural, relatively closing motion of the confronting corresponding finger-expanse portion, wherein each finger-associable cluster is elongate, and said keys therewithin are distributed along the length of the cluster with respective key-actuation axes that intersect normal to different angularly disposed planes, one plane for each key, which planes intersect one another along the length of the cluster in a mixed pattern of obtuse and reflex angles andfor the thumb, a thumb-associable cluster of input keys disposed generally over three mutually intersecting surfaces to enable key actuation via mixed lateral, and slight endo, translation of an associated adjacent thumb within, generally, a cone of motion whose apex resides adjacent the base of the thumb.

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