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Power tool having rotary input control

  • US 9,475,180 B2
  • Filed: 12/17/2013
  • Issued: 10/25/2016
  • Est. Priority Date: 01/07/2010
  • Status: Active Grant
First Claim
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1. A power tool comprising:

  • a housing;

    an output member coupled to the housing, the output member including an output shaft configured to rotate about a longitudinal axis;

    a switch configured to select a desired rotational direction of the output shaft between a clockwise direction and a counterclockwise direction;

    a motor contained in the housing and drivably connected to the output shaft to impart rotary motion thereto;

    a rotational motion sensor arranged in the housing and operable to detect rotational motion of the housing about a rotational axis that is substantially parallel to the longitudinal axis of the output shaft;

    a controller arranged in the housing to receive a first signal indicative of the desired rotational direction from the switch and a second signal indicative of the rotational motion of the housing from the rotational motion sensor, the controller operable to determine a direction of the rotational motion of the housing about the rotational axis and to drive the motor only when the direction of rotational motion of the housing is the same as the desired rotational direction.

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