TRANSPORTER MOTOR ALARM
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United States of America Patent
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app pub date -
Sep 21, 2009
filing date -
Dec 3, 2002
priority date (Note) -
Abandoned
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Abstract
An audio alarm for a transporter having an electric motor. The alarm has a signal generator for generating a signal within the audible frequency range and a modulator for modulating a current that is applied to the electric motor in accordance with the signal generated by the signal generator.
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