Force-sensing electronic pen with user-replaceable cartridge
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United States of America Patent
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Nov 13, 2012
Issued Date -
N/A
app pub date -
Jul 5, 2009
filing date -
Aug 3, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A force-sensing electronic pen comprises a user-replaceable cartridge, a retaining boot for securely retaining the cartridge, a force sensor coupled to the retaining boot, a spring for biasing the retaining boot towards engagement with the force sensor; and an end-stop for limiting travel of the retaining boot against the bias of the spring. The cartridge is extractable from the pen by pulling the cartridge against the bias of the spring until the retaining boot engages with the end-stop. When the retaining boot engages with the end-stop, further pulling of the cartridge releases the cartridge from the retaining boot.
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