Mechanical pencil
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United States of America Patent
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Sep 15, 2009
Grant Date -
Jan 29, 2009
app pub date -
May 11, 2006
filing date -
May 12, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A mechanical pencil includes an advancing mechanism and a slider both incorporated in a main body. The advancing mechanism has a chuck and a chuck ring (collar for fastening the chuck) for holding a lead, so as to advance the lead. The slider is slidable relative to the main body and has a lead guide and a lead friction member. The lead friction member is to friction with the lead and is made of thermoplastic elastomer.
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