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Keyboard with adjustable splay and pronation pivot points

  • US 5,613,786 A
  • Filed: 11/20/1995
  • Issued: 03/25/1997
  • Est. Priority Date: 11/20/1995
  • Status: Expired due to Term
First Claim
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1. A keyboard, comprising:

  • two demi-boards, each of which include a plurality of user activated keys extending therefrom, and which define a distal side for orientation away from the user and a proximate side for orientation adjacent the user, said distal and proximate sides being joined by inwardly facing sides and outwardly facing sides;

    a universal joint rotatably coupling said inwardly facing sides of the demi-boards;

    a base member;

    pivot point selectors slidably mounted to said demi-boards for selecting pivot points along said outwardly facing sides, about which points said demi-boards are pivotably connected to said base member and are constrained for pivotal movement about said selected pivot points between a retracted position in which said demi-boards are co-planar and said inwardly facing sides are parallel, and an extended position in which said demi-boards are splayed; and

    a lift controller interconnected between said base member and said universal joint for adjusting and controlling the height of said universal joint and the pronation of said demi-boards relative to said base member, which pronation becomes more pronounced as said pivot selectors are positioned toward said proximate sides.

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