Patent ID: 8325009
Filing Date: 2012-12-04
Classification: B60R

Abstract:
1. A wireless vehicle door unlocking system for allowing a driver using a Bluetooth® enabled cellphone to regain entry into a vehicle after being locked out, the vehicle having an existing electronic door locking system, the vehicle door unlocking system comprising: a first signal receiving module having a housing adapted to be removably secured to a glass surface that faces the interior of the vehicle, said first signal receiving module containing a first power supply, a magnetic proximity switch coupled with said first power supply, a timing circuit coupled with said magnetic proximity switch, a Bluetooth® module coupled with said timing circuit and powered by a second power supply, and a DTMF decoder board having a circuit coupled with said Bluetooth® module and said timing circuit for receiving and decoding DTMF tones representing an unlock code signal transmitted from the Bluetooth® enabled cellphone, said Bluetooth® module paired with the Bluetooth® enabled cellphone for wireless communication therebetween; a second signal transceiver module having a signal receiving circuit coupled wirelessly with said DTMF decoder circuit, a solenoid switch coupled with said signal receiving circuit, and an unlock signal transmitting circuit coupled with said solenoid switch and coupled wirelessly with the electronic door locking system of the vehicle; a magnet member to be manually positioned by the driver on the glass surface exterior of the vehicle in close proximity to said first signal receiving module in the event of being lock out to actuate said magnetic proximity switch for initiating an unlocking operation; wherein said magnetic proximity switch completes a circuit responsive to close proximity of said magnet to supply power from said first power supply to said timing circuit to activate said DTMF decoder board circuit and said Bluetooth® module for a period of time sufficient to receive DTMF tones representing an unlock code signal transmitted from the Bluetooth® enabled cellphone, decode the DTMF tones, and responsive thereto, to actuate said solenoid switch to complete said unlock signal transmitting circuit to wirelessly transmit an unlock signal to the electronic door locking system of the vehicle to open at least one vehicle door; and after a predetermined period of time, said timing circuit turns off power from said first power supply to said DTMF decoder board circuit and said Bluetooth® module.