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Hands-free car kit

  • US 7,099,706 B2
  • Filed: 07/28/2005
  • Issued: 08/29/2006
  • Est. Priority Date: 03/08/2002
  • Status: Expired due to Fees
First Claim
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1. An accessory for a mobile communications device comprising:

  • a cradle adapted to receive a mobile handset;

    a power cord capable of being removably attached to the mobile handset;

    a hall effect sensor placed in the power cord;

    a magnet placed in the cradle;

    a control circuit coupled to the hall effect sensor for sensing and transmitting a state of the hall effect sensor;

    a speaker configured to be heard from several feet away coupled to the control circuit adapted to change states based on the state of the hall effect sensor;

    a microphone coupled to the control circuit adapted to change states based on the state of the hall effect sensor;

    wherein the magnet is adapted to change states of the hall effect sensor based on proximity and orientation of the magnet to the hall effect sensor.

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