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US3781789A
Expired / Lapsed
US
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Anti-hijacking and theft control systems for motor vehicles
Assignee: Protection Devices Inc
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Filing: 1972-07-07
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Granted: 1973-12-25
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Expires: 1992-07-07
Abstract
Abstract An anti-hijacking and theft control system for use on motor vehicles including both gasoline engine and diesel engine types. A manually set non-reversible timer when set acts through a relay to disconnect the ignition or fuel solenoid when either a running board tape switch, a door switch, or other suitable switch are activated, and the motor vehicle will not run until the timer has completed its cycle. When the timer has completed its cycle, the motor vehicle returns to normal operation, and the system is inoperative. The system remains inoperative unless a reset is activated or the ignition key is turned off.
Inventors
- 👤 V Caleskie
- 👤 P Hughes
- 👤 Johnson R Wayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:34
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/10; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
122 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set nonreversible timer means connected to the power source, actuating means connected to the timer, current blocking means connected between the timer and the actuating means for protecting the system, and at least one sensor means connected to the actuating means so that, when there is time on the timer means and a sensor means is tripped, the engine will be cut off, and the vehicle will be stalled, and in which the actuating means is an electrical relay including relay switch elements and a solenoid coil which throws the relay switch elements to cut off the engine when the solenoid coil is conducting current.
Claim 2
Dependent Claim
122 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set nonreversible timer means connected to the power source, actuating means connected to the timer, current blocking means connected between the timer and the actuating means for protecting the system, and at least one sensor means connected to the actuating means so that, when there is time on the timer means and a sensor means is tripped, the engine will be cut off, and the vehicle will be stalled, and in which the actuating means is an electrical relay including relay switch elements and a solenoid coil which throws the relay switch elements to cut off the engine when the solenoid coil is conducting current.
Claim 3
Dependent Claim
32 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 1 including reset means for resetting the actuating means after the timer means has completed its cycle.
Claim 4
Dependent Claim
120 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set non-reversible timer means connected to the power source, actuating means connected to the timer means and between the power source and the engine, and at least one sensor means connected between the timer means and the actuating means so that when there is time on the timer means and a sensor means is tripped, the engine will be cut off, and the vehicle will be stalled, and in which the actuating means is an electrical relay including relay switch elements and a solenoid coil which throws the relay switch elements to cut off the engine when the solenoid coil is conducting current.
Claim 5
Dependent Claim
120 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set non-reversible timer means connected to the power source, actuating means connected to the timer means and between the power source and the engine, and at least one sensor means connected between the timer means and the actuating means so that when there is time on the timer means and a sensor means is tripped, the engine will be cut off, and the vehicle will be stalled, and in which the actuating means is an electrical relay including relay switch elements and a solenoid coil which throws the relay switch elements to cut off the engine when the solenoid coil is conducting current.
Claim 6
Dependent Claim
74 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 3 in which the timer means includes a normally open circuit which is closed when there is time on the timer means and in which the timer means has one end of its normally open circuit connected to the positive electrode of the power source and the other end of its normally open circuit connected to the actuating means.
Claim 7
Dependent Claim
153 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 4 including a transistor having its base electrode connected to the sensor means, its emitter electrode connected to the actuating means connection Of the timer means, and its collector electrode connected to the actuating means solenoid coil so that when the base electrode of the transistor is grounded by tripping a sensor means when the timer circuit is closed, current will flow from the timer means through the relay solenoid coil to energize the relay switch elements and cut off the vehicle engine and including a resistor connected between the base electrode of the transistor and the sensor means to prevent oversaturation and a diode connected between the ends of the actuating means solenoid coil to protect the transistor and in which the end of the solenoid coil remote from the transistor collector electrode is connected to ground.
Claim 8
Dependent Claim
117 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 5 including two different indicator lights arranged so that when there is time on thE timer means, and a sensor means has not been tripped, one of the relay switch elements connected to the actuating means end of the timer means circuit is connected to one of the indicator lights to light said indicator, and, when there is time on the timer means, and a sensor means is tripped, the actuating means solenoid actuates this relay switch element to disconnect the first indicator light and connect the other indicator light, thus dimming the first indicator light and lighting the second indicator light.
Claim 9
Dependent Claim
57 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 5 in which the engine is a gasoline engine and in which the actuating means cuts off the engine by shorting out the ignition when current flows from the timer means through the relay solenoid coil to energize the relay switch elements.
Claim 10
Dependent Claim
74 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 5 in which the engine is a diesel engine and in which the actuating means cuts off the engine by shutting off the fuel line when current flows from the timer means through the relay solenoid coil to energize the relay switch elements and in which the fuel line is shut off by deenergizing a diesel fuel solenoid valve.
Claim 11
Dependent Claim
32 words
An anti-hijacking control system for connection to a motor vehicle engine as described in claim 5 including reset means for resetting the actuating means after the timer means has completed its cycle.
Claim 12
Dependent Claim
127 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set non-reversible timer means connected to the power source, actuating means connected to the timer means and between the power source and the engine, and at least one sensor means connected between the timer means and the actuating means so that when there is time on the timer means and a sensor means is tripped, the engine will be cut off and the vehicle will be stalled, and in which the timer means is made non-reversible by a clutch device which can be manually turned in one direction to put time on the timer means but which will not set back the timer means by turning in the reverse direction.
Claim 13
Dependent Claim
127 words
An anti-hijacking control system for connection to a motor vehicle engine including a source of power, manually set non-reversible timer means connected to the power source, actuating means connected to the timer means and between the power source and the engine, and at least one sensor means connected between the timer means and the actuating means so that when there is time on the timer means and a sensor means is tripped, the engine will be cut off and the vehicle will be stalled, and in which the timer means is made non-reversible by a clutch device which can be manually turned in one direction to put time on the timer means but which will not set back the timer means by turning in the reverse direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |