Pulse-type switching apparatus and method of operation
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United States of America Patent
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-
Mar 5, 1991
Grant Date -
N/A
app pub date -
Jul 11, 1989
filing date -
Jul 11, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A miniature ratchet type push button activated electrical switch wherein a first electrical contact is caused to sweep across and briefly contact a second electrical contact upon depression of a push button to transmit an electrical pulse. The rotation is driven by the free expansion of a spring upon depression of the push button beyond a preselected depth, and therefore results in a pulse of uniform duration independent of how quickly the push button is depressed or how long it is held in its depressed state.
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