Transmission device for internal combustion engine
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United States of America Patent
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May 12, 2015
Grant Date -
Sep 26, 2013
app pub date -
Feb 15, 2013
filing date -
Mar 22, 2012
priority date (Note) -
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Abstract
A transmission device for an internal combustion engine for preventing components thereof from being damaged for making the components smaller in size and weight, reducing a load and a time required to shift gear positions for increased operability and for reducing overall size and weight. A transmission device for an internal combustion engine includes a shift drum angularly movable by a star-shaped drum plate that is turned when a change spindle is turned and a stopper roller for limiting the star-shaped drum plate against turning movement. The star-shaped drum plate includes peaks corresponding to a plurality of gear positions and valleys interposed between the peaks. A selected one of the valleys includes a curved wall for being more gently contacted by the stopper roller than curved surfaces of the other valleys which are contacted by the stopper roller.
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