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Power tool hall effect mode selector switch

  • US 10,414,033 B2
  • Filed: 03/15/2013
  • Issued: 09/17/2019
  • Est. Priority Date: 10/04/2012
  • Status: Active Grant
First Claim
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1. A power tool, comprising:

  • a mode selector switch having a knob that when moved from a first position to a second position affects an output signal of a linear Hall effect sensor to a microprocessor configured to change an operational mode of the power tool from a first operational mode to a second operational mode different from the first operational mode when the output signal changes;

    the mode selector switch capable of causing a first magnet and a second magnet to move a distance of a throw;

    the first magnet and the second magnet when moved the distance of the throw effect a change from the first operational mode to the second operational mode;

    the first magnet having at least a first magnetic field providing a first magnetic source to the mode selector switch;

    the second magnet having at least a second magnetic field providing a second magnetic source to the mode selector switch;

    the linear Hall effect sensor affixed to a circuit board and configured to produce the output signal that changes when the strength of at least one of the first magnetic field and the second magnetic field experienced by the linear Hall effect sensor changes;

    the linear Hall effect sensor having a facing surface and the magnet having a face, the facing surface configured at a sensing distance from the face of the first magnet.

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