Anti-theft apparatus

Anti-theft apparatus in a motor vehicle including:

• a seatbelt having fastened and unfastened states;
• a motor having an ignition circuit;
• electrical relay means for opening and closing the ignition circuit;
• a seatbelt detection circuit for generating first and second signals depending on, respectively, the fastened state or the unfastened state of the seatbelt;
• a circuit control keypad for generating coded third signals;
• and
• a timing circuit for receiving the first and second signals from the seatbelt detection circuit and the coded third signals from the circuit control keypad,
• the timing circuit generating fourth signals after a preselected period of time after receiving second signals from the seatbelt detection circuit,
• which fourth signals cause the electrical relay means to open the ignition circuit, thereby disabling the motor, and
• the timing circuit generating fifth signals upon receipt of coded third signals from the circuit control keypad and first signals from the seatbelt detection circuit,
• which fifth signals cause the electrical relay means to close the ignition circuit, thereby enabling the motor.

Anti-theft apparatus in a motor vehicle including:

• a seatbelt having fastened and unfastened states;
• a seatbelt switch in the seatbelt which is closed in the fastened state and open in the unfastened state;
• a motor having an ignition circuit;
• a solenoid for opening and closing the ignition circuit;
• a seatbelt detection circuit for generating first and second signals depending on whether the seatbelt switch is closed or open, respectively;
• a portable hand-held circuit control keypad for generating coded third signals;
• a timing circuit for receiving the first and second signals from the seatbelt detection circuit and the coded third signals from the circuit control keypad,
• the timing circuit generating fourth signals after a preselected period of time after receiving second signals from the seatbelt detection circuit,
• which fourth signals cause the solenoid to open the ignition circuit, thereby disabling the motor,
• the timing circuit generating fifth signals upon receipt of coded third signals from the circuit control keypad and first signals from the seatbelt detection circuit,
• which fifth signals cause the solenoid to close the ignition circuit, thereby enabling the motor;
• and
• at least one port for removably connecting the circuit control keypad to the timing circuit.