Electric power steering device
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United States of America Patent
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Apr 26, 2016
Grant Date -
Aug 13, 2015
app pub date -
Feb 3, 2015
filing date -
Feb 13, 2014
priority date (Note) -
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Abstract
An electric power steering device includes a motor, a drive pulley that is connected to the output shaft of the motor and includes helical teeth, a driven pulley that is arranged coaxially with a rack shaft and includes helical teeth, and a belt that is wound around these pulleys and includes helical teeth meshing with the respective helical teeth of both pulleys. Internal teeth on a belt each are formed to have a tooth thickness that is reduced toward both ends thereof along the width direction of the belt.
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