Electric pushbutton switch
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United States of America Patent
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-
Dec 24, 1991
Grant Date -
N/A
app pub date -
Aug 30, 1990
filing date -
Aug 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A manually actuatable electric pushbutton switch that automatically returns to the starting position after actuation, especially such a switch for the keyboard of an electronic device, for example a typewriter, is provided. The switch has a plastic housing in which is disposed a plate spring that is in engagement with an actuating button. The plate spring has a region that during shifting of the actuating button and flexing of the plate spring abruptly jumps to a different position when the electrical contact position is achieved, so that the triggering function is indicated both physically as well as audibly to the user. The region of the plate spring that abruptly reverses is preferably formed by slots, between which the abruptly reversing plate spring strip is defined.
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