Vehicle anti-hijacking and anti-theft device
First Claim
1. A vehicle security system comprising:
- (a) means for arming the system,(b) means, responsive to an event when the system is armed, for measuring a pre-set time period from the event,(c) means for producing a first signal at the expiration of the time period,(d) means for sensing vehicle motion and for producing a second signal in response thereto, and(e) means, responsive to the presence of the first signal together with the absence of the second signal, for disabling the vehicle.
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Accused Products
Abstract
A "normal mode" allows a hijacker to drive away but disables the vehicle after a short delay. An optional "valet mode" allows others, e.g. parking attendants and mechanics, a limited driving period that when exceeded causes vehicle shut-down that cannot be overcome without actuating a hidden switch. One embodiment has both modes and includes: a switch for arming the system in the normal mode; an element, responsive to a hijacking event, e.g. a door opening, when the system is armed in the normal mode, for measuring a "hijack delay", preferably three minutes; an element for producing a first signal at the expiration of the hijack delay; an element responsive to said first signal for disabling the vehicle; an element for arming the system in the valet mode; a valet mode element for preventing disablement of the vehicle in response to the first signal; an element for sensing vehicle motion and producing a second signal in response thereto; a valet mode element responsive to the second signal for measuring a "valet delay"; an element for producing a third signal at the expiration the valet delay, the valet delay measuring element being disabled whenever the second signal is not extant; and an element responsive to the third signal for disabling the vehicle. This embodiment can also include an element responsive to the second signal for preventing disablement of the vehicle in either mode until the second signal is no longer extant.
39 Citations
17 Claims
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1. A vehicle security system comprising:
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(a) means for arming the system, (b) means, responsive to an event when the system is armed, for measuring a pre-set time period from the event, (c) means for producing a first signal at the expiration of the time period, (d) means for sensing vehicle motion and for producing a second signal in response thereto, and (e) means, responsive to the presence of the first signal together with the absence of the second signal, for disabling the vehicle. - View Dependent Claims (2, 3, 4, 5)
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6. A vehicle security system comprising:
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(a) means for arming the system, (b) means, responsive to an event when the system is armed, for measuring a pre-set time period from the event, (c) means for disabling the vehicle at the end of the time period, and (d) means, responsive to vehicle motion at the end of the time period, for delaying disablement of the vehicle until the vehicle is no longer in motion. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A vehicle security system comprising:
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(a) means, responsive to vehicle motion, for measuring a pre-set time period of continuous vehicle motion, (b) means for disabling the vehicle at the end of the time period, and (c) means, responsive to vehicle motion at the end of the time period, for delaying disablement of the vehicle until the vehicle is no longer in motion. - View Dependent Claims (13)
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14. A vehicle security system having at least two modes comprising:
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(a) means for selecting between said at least two modes, (b) means, responsive to an event when the system is in a first mode, for measuring a first pre-set time period from the event, (c) means for disabling the vehicle at the end of the first time period whenever the system is the first mode, (d) means, responsive to vehicle motion when the system is a second mode, for measuring a second pre-set time period of continuous vehicle motion, and (e) means for disabling the vehicle at the end of the second time period whenever the system is in the second mode. - View Dependent Claims (15, 16, 17)
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Specification