Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold
Thin flexible electronic calculator Patent #: 4096577
ApplicationNo. 05/877797 filed on 02/14/1978
US Classes:273/238, Removable and discrete game piece changes status of circuit273/265, Salvo type273/275, Path forming273/282.1Removably interfitting or detachably adhesive board and piece
ExaminersPrimary: Pinkham, Richard C.
Assistant: Moy, R. Carl
Attorney, Agent or Firm
International ClassesA63F 3/00 (20060101)
A63F 9/24 (20060101)
A63F 9/00 (20060101)
A63F 3/02 (20060101)
AbstractTwo playing boards with a matrix array of apertures are positioned so that one board only is displayed to each player. Electric circuitry including contacts are printed on one side of a flexible sheet which is folded so that contacts face each other adjacent each of the apertures. The circuitry is arranged so that the insertion of plugs into corresponding apertures of the two boards moves the contacts carried on the sheet towards each other to close a circuit energizing an audible signal generator.
Field of SearchRemovable and discrete game piece changes status of circuit