| 摘要 |
The invention applies to vehicular brakes for a predetermined time period whenever the vehicular coil or starting motor circuitry is energized with the ignition in the OFF position. A logic circuit is readied when the vehicle ignition is turned to the OFF position and/or the key removed. Subsequently, if the wires are crossed or a jumper used to excite the coil, starting solenoid or motor, the logic system senses this tampering and energizes an electro-mechanical pump to actuate a piston in an auxilliary cylinder connected to the vehicular brake system to apply and lock the brakes on under control of a timer. An alarm controlled by the timer may be sounded at any selected moment during the lock-up time. The circuitry is automatically reset at the expiration of the predetermined time to again sense his tampering and lock up the brakes if detected. Access is provided to the timer alarm to release the pump and alarm, but use of the ignition key is required to open the auxilliary cylinder.
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