Power screwdriver having rotary input control
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United States of America Patent
Stats
-
Oct 16, 2012
Grant Date -
Aug 25, 2011
app pub date -
Jan 7, 2011
filing date -
Jan 7, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A power tool includes an output shaft configured to rotate about a longitudinal axis, a motor drivably connected to the output shaft to impart rotary motions thereto, and a rotational motion sensor spatially separated from the output shaft and operable to determine the user-imparted rotational motion of the power tool with respect to the longitudinal axis. A controller is electrically connected to the rotational motion sensor and the motor. The controller determines angular velocity of the power tool about the axis, rotational displacement of the power tool about the axis, and/or a direction of the rotational displacement using input from the rotational motion sensor. The controller then controls the motor according to the angular velocity, the rotational displacement, and/or the direction of the rotational displacement.
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