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Hands-free towel dispenser with EMF controller

  • US 20050077419A1
  • Filed: 10/10/2003
  • Published: 04/14/2005
  • Est. Priority Date: 10/10/2003
  • Status: Active Grant
First Claim
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1. A hands-free towel dispenser comprising:

  • a housing with a roll of towels inside an interior;

    a sensor for detecting the presence of an object and generating a signal;

    a motor driving a dispensing means for dispensing a desired length of towel;

    a control circuit for receiving the signal from the sensing means and controlling supply of power to the motor driving the dispensing mechanism;

    a power source supplying power to the motor and the control circuit;

    the control circuit adapted to sample back EMF generated by the motor while the dispensing means is dispensing the towel and to determine based on the sampled back EMF a calculated run time for the operation of the motor to dispense the desired length of towel.

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