With Adjustment Means (e.g., For "touch" Control, Ect.) Patents (Class 400/438)
  • Patent number: 4188137
    Abstract: A low silhouette keyboard having a plurality of keylevers arranged in rows and in parallel relationship to one another are suspended, guided and biased to restore by opposing flexible support members. The keylevers are "T" shaped which includes a cross arm constrained between the flexible support members, and a leg portion which projects through slots in a single guide comb. The keylevers are suspended in cantilever fashion being biased upward limited by an upstop. Reciprocation of any keylever in any row is a path substantially perpendicular to the plane of the flexible support members. Keytouch of all keylevers is substantially simultaneous and uniformly adjustable by providing means for varying the upward biasing force applied thereto.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: February 12, 1980
    Assignee: SCM Corporation
    Inventor: Hugh St. L. Dannatt