Patent ID: 7154386

Claim:
A safety device for use with a vehicle for forcing wearing of seatbelts by both a driver and a passenger, comprising: a power source for energizing an engine of the vehicle; a relay for connecting and disconnecting the power source; a first seat sensor responsive to the pressure of a driver sitting on a driver seat; a second seat sensor responsive to the pressure of a passenger sitting on a passenger seat; a first seatbelt switch responsive when a driver's seatbelt is not in use or indicated to be not in use, said first seatbelt switch being connected in series with said first seat sensor and the series connection of the first seatbelt switch and the first seat sensor being connected to the relay; a first alarm connected to the series connection of the first seatbelt switch and the first seat sensor for providing an alarm to the driver when the driver's seatbelt is not in use or indicated to be not in use; a second seatbelt switch responsive when a passenger's seatbelt is not in use or indicated to be not in use, said second seatbelt switch being connected in series with said second seat sensor and the series connection of the first seatbelt switch and the first seat sensor being connected to the relay; a second alarm connected to the series connection of the second seatbelt switch and the second seat sensor for providing an alarm to the passenger when the passenger's seatbelt is not in use or indicated to be not in use; wherein the second seatbelt switch is connected to the joint between the first seat sensor and the first seatbelt switch to interpose the second seat sensor and the first seat sensor in series between the relay and the engine whereby the safety device is disabled and the second alarm is prohibited from providing an alarm to the passenger unless the driver sits on the driver seat.