Electronic trigger for prepay type telephone paystations
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United States of America Patent
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Jan 29, 1991
Grant Date -
N/A
app pub date -
Mar 9, 1990
filing date -
Mar 9, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A trigger switch for use in coin operated devices and particularly in telephone paystations consisting of a plurality of parallel channels each including one or more openings through which a light beam passes. Deposit of coins in the appropriate channels blocks one or more light beams passing through the openings causing detection of the light blockage by associated light detectors to operate to give an indication of the quantity and value of coins deposited through the coin channels. A common trigger mechanism is also included and operates in response to deposit of any coins through the trigger switch, to provide operation of an associated coin relay.
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