Travel multiplier mechanisms for writing instruments
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United States of America Patent
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Feb 22, 2011
Grant Date -
Jan 25, 2007
app pub date -
Feb 2, 2006
filing date -
Feb 3, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A writing instrument includes a travel multiplier mechanism that includes a cam member that pivots about a pivot axis in response to motion of a push button member. The cam member engages a sliding piston member in order to provide a travel multiplying effect such that a distance of travel of the sliding piston member exceeds a distance traveled by the push button member. The cam member may be configured to rotate about an axis that is located in a plane perpendicular to a primary axis of a barrel of the writing instrument.
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