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METHOD AND APPARATUS FOR CONTROLLING THE OPERATION OF A STUMP CUTTER

  • US 20090090434A1
  • Filed: 07/29/2008
  • Published: 04/09/2009
  • Est. Priority Date: 07/31/2007
  • Status: Active Grant
First Claim
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1. A controller system for a stump cutter having three operator control handles, comprising:

  • (a) a capacitive sensor mounted in each of the handles, the capacitive sensor arranged and configured to change capacitance when the respective handle is touched by an operator;

    (b) an operator presence circuit connected to the capacitive sensors, the circuit having a node where changes in capacitance of the capacitive sensors can be measured as a change in voltage; and

    (c) a controller connected to the operator presence circuit, the controller receiving the changes in voltage from the operator presence circuit, and wherein the controller initiates a predetermined delay period when the voltage change indicates that the handles are no longer being touched by the operator.

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