Low profile keyboard switch having panel hinged actuators and cantilevered beam snap acting contacts Patent #: 4032729
ApplicationNo. 628300 filed on 12/14/1990
US Classes:235/145R, KEYBOARDS235/145A, With total transfer to keyboard or the like235/146, Auxiliary400/703, Indicator means400/719, MISCELLANEOUSD14/455Keyboard or keypad
ExaminersPrimary: Hix, L. T.
Assistant: Lee, Eddie
International ClassesG06C 007/00
AbstractAn overlay is described for a keyboard wherein the keyboard includes a plurality of convex, depressible keys that extend above openings in a panel surface, each key having an associated function indication. The overlay comprising a molded plastic, planar member sized to cover substantially the extent of the keyboard, and having both keyboard and user sides. The keyboard side exhibits a plurality of waffle-like convex chambers created by orthogonal intersecting walls, each convex chamber surrounding a corresponding key and having a resilient ceiling member positioned over the key. When the resilient ceiling member is depressed by a user, the underlying key is likewise depressed and actuated. The user side of selected ones of resilient ceiling members, indicate modified key functions.