Pressure sensitive pen
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United States of America Patent
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Apr 27, 2004
Grant Date -
Jul 31, 2003
app pub date -
Jan 28, 2002
filing date -
Jan 28, 2002
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pressure sensitive pen is provided. The pressure sensitive pen comprises a core body, an elastic element, a first magnetic body having one coil formed of at least a wire wound around, a second magnetic body, a sliding member, a hollow cylindrical body with an annular element formed therein and an inductance-capacitance type resonant circuit. The resonant circuit is electrically connected with the first magnetic body having the coil wound around. When a force is upward applied on the core body, the force is further applied on the sliding member through the core body such that the sliding member in conjunction with the second magnetic body move upward and make the elastic element deformed, and changing a predetermined distance between the first magnetic body and the second magnetic body, thereby changing an inductance generated by the coil, and the resonance frequency of the resonant circuit is thus changed.
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