RETRACTABLE CAPACITANCE PEN
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United States of America Patent
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Issued Date -
Apr 20, 2017
app pub date -
Dec 22, 2015
filing date -
Oct 16, 2015
priority date (Note) -
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Abstract
The invention relates to a retractable capacitance pen. The retractable capacitance pen comprises a pen case, an electrical signal transmitting module, an extension-and-retraction unit, and a switching unit. The extension-and-retraction unit can control the core of the electrical signal transmitting module to extend outside the pen case thereby the switching unit is activated to turn on the electrical signal transmitting module for continuously emitting electrical signals. Furthermore, the extension-and-retraction unit also can control the core of the electrical signal transmitting module to retract into the pen case thereby the switching unit is activated again to turn off the electrical signal transmitting module for stopping emitting electrical signals.
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