Anti-theft apparatus
First Claim
1. Anti-theft apparatus in combination with a motor vehicle including:
- a seatbelt having fastened and unfastened states;
a motor;
means for enabling and disabling the motor;
a seatbelt detection circuit for generating first and second signals depending on, respectively, the fastened state or the unfastened state of the seatbelt;
means 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 coded-signal generating means,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 motor enabling/disabling means to disable the motor andthe timing circuit generating fifth signals upon receipt of coded third signals from the coded-signal generating means and first signals from the seatbelt detection circuit,which fifth signals cause the motor enabling/disabling means to enable the motor.
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Accused Products
Abstract
A vehicular anti-theft apparatus uses the unbuckling of a seatbelt to produce a surreptitious signal that activates a timing circuit which disables the motor after a preselected period of time. When the seatbelt is unfastened, an electrical signal is generated by a sensor switch within the seatbelt buckle and sent to the timing circuit. This circuit activates a solenoid after the preselected time has elapsed. Activation of the solenoid opens the ignition circuit, which makes the vehicle stall. In order for the motor to be restarted, the timing circuit must be reset using a circuit control keypad. The circuit control keypad is a separate and portable hand-held push-button device that allows an authorized operator manually to enter a secret code. The circuit control keypad plugs into a hidden port, thereby electrically interfacing with the timing circuit.
37 Citations
17 Claims
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1. Anti-theft apparatus in combination with a motor vehicle including:
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a seatbelt having fastened and unfastened states; a motor; means for enabling and disabling the motor; a seatbelt detection circuit for generating first and second signals depending on, respectively, the fastened state or the unfastened state of the seatbelt; means 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 coded-signal generating means, 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 motor enabling/disabling means to disable the motor and the timing circuit generating fifth signals upon receipt of coded third signals from the coded-signal generating means and first signals from the seatbelt detection circuit, which fifth signals cause the motor enabling/disabling means to enable the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Anti-theft apparatus in a motor vehicle including:
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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. - View Dependent Claims (11, 12, 13, 14, 15)
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16. Anti-theft apparatus in a motor vehicle including:
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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. - View Dependent Claims (17)
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Specification