Writing implement comprising a device for venting the reservoir
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United States of America Patent
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Jan 17, 2012
Grant Date -
Jul 15, 2010
app pub date -
Jan 12, 2007
filing date -
Jan 13, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A writing implement that includes an ink reservoir, a writing tip fluidically connected to the reservoir and through which the ink emerges during a use of the implement, and a reservoir-venting device that includes a cavity in communication with the reservoir and with an orifice open to the outside of the implement. The cavity is suitable for absorbing an overflow of ink, characterized in that the cavity is filled with separate grains having angles and sharp edges having dimensions that are significant compared with an apparent dimension d of the grains.
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