US3718202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle anti-theft system
Assignee: Texas Instruments Inc
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Filing: 1970-05-20
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Granted: 1973-02-27
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Expires: 1990-05-20
Abstract
Abstract A system is disclosed which includes an encoder panel adapted to be mounted in an accessible location to enable the entering of a code sequence therein by an operator. A decoder circuit is remotely disposed in a secure location adjacent a lock mechanism and is responsive to the encoder panel to generate an electrical energizing signal only upon detection of a predetermined code which is entered into the encoder panel. Structure is connected to the decoder circuit which operates the lock mechanism only upon generation of the electrical energizing signal. In the preferred embodiment of the invention, the encoder panel is located in the passenger compartment of a vehicle. The decoder circuit is located in an area of the vehicle of difficult accessibility, such as within the vehicle transmission. The drive train of the vehicle is locked by the lock mechanism until a predetermined code is entered into the encoder panel. Circuitry may also be provided to prevent ignition of the vehicle motor until the predetermined code is entered into the encoder panel.
Inventors
- 👤 D Brock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:10
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/01; B60R25/04; B60R25/06; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5889; Y10T70/5925
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
82 words
A security system for preventing the unauthorized use of a vehicle comprising: encoder means accessible to the vehicle operator for entry of a code sequence therein and for generation of electrical representations of the entered code sequence, decoder means, connected to said encoder means, for generating an energizing signal permitting said vehicle to be moved whenever a predetermined code sequence is entered into said encoder, and means for overriding said decoder means for a predetermined number of operation cycles of said vehicle.
Claim 2
Dependent Claim
82 words
A security system for preventing the unauthorized use of a vehicle comprising: encoder means accessible to the vehicle operator for entry of a code sequence therein and for generation of electrical representations of the entered code sequence, decoder means, connected to said encoder means, for generating an energizing signal permitting said vehicle to be moved whenever a predetermined code sequence is entered into said encoder, and means for overriding said decoder means for a predetermined number of operation cycles of said vehicle.
Claim 3
Dependent Claim
27 words
The security system of claim 1 and further comprising: means for preventing ignition of the vehicle motor until generation of said energizing signal by said decoder means.
Claim 4
Dependent Claim
36 words
The security system of claim 1 and further comprising: means for resetting said decoder means to zero after generation of said energizing signal and after entry of a code sequence other than said predetermined code sequence.
Claim 5
Dependent Claim
26 words
The security system of claim 1 and further comprising: locking means for preventing movement of the transmission of said vehicle until reception of said energizing signal.
Claim 6
Dependent Claim
39 words
The security system of claim 4 wherein said locking means comprises: locking gear means for preventing movement of the gears of the vehicle transmission, and means for preventing movement of said locking gear until reception of said energizing signal.
Claim 7
Dependent Claim
117 words
A security system for a vehicle comprising: an encoder mechanism including means for having a plurality of codes sequentially entered therein, decoder circuitry responsive to the code entered within said encoder mechanism, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is entered into said encoder mechanism, meAns for resetting said decoder mechanism to zero if said predetermined code has not been entered into said encoder mechanism within a predetermined number of entries, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, and means for resetting said decoder circuitry when said vehicle motor is started.
Claim 8
Dependent Claim
117 words
A security system for a vehicle comprising: an encoder mechanism including means for having a plurality of codes sequentially entered therein, decoder circuitry responsive to the code entered within said encoder mechanism, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is entered into said encoder mechanism, meAns for resetting said decoder mechanism to zero if said predetermined code has not been entered into said encoder mechanism within a predetermined number of entries, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, and means for resetting said decoder circuitry when said vehicle motor is started.
Claim 9
Dependent Claim
58 words
The security system of claim 6 wherein said encoder mechanism comprises: a panel having a plurality of button switches thereon, said decoder circuitry being responsive only to the energization of a predetermined sequence of a preset number of said switches in order to unlock the drive train of the vehicle and to enable ignition of the vehicle motor.
Claim 10
Dependent Claim
18 words
The security system of claim 6 and further comprising: means enabling said predetermined code to be selectively varied.
Claim 11
Dependent Claim
99 words
An anti-theft system for use on a vehicle comprising: an encoder including a plurality of switch means which may be energized in a plurality of sequences to generate a code, decoder circuitry coupled to receive said code and for generating a control signal in response thereto, means for locking the transmission of said vehicle and for preventing the application of electrical current to the ignition system of said vehicle until the reception of said control signal, and means for enabling normal operation of said vehicle for a predetermined number of times without requiring the generation of said control signal.
Claim 12
Dependent Claim
99 words
An anti-theft system for use on a vehicle comprising: an encoder including a plurality of switch means which may be energized in a plurality of sequences to generate a code, decoder circuitry coupled to receive said code and for generating a control signal in response thereto, means for locking the transmission of said vehicle and for preventing the application of electrical current to the ignition system of said vehicle until the reception of said control signal, and means for enabling normal operation of said vehicle for a predetermined number of times without requiring the generation of said control signal.
Claim 13
Dependent Claim
19 words
The anti-theft system of claim 9 and further comprising: 10 switch means each representative of a different numerical representation.
Claim 14
Dependent Claim
35 words
The anti-theft system of claim 9 and further comprising: means for resetting said decoder circuitry to zero when the vehicle motor is started and when an incorrect code sequence is entered into said encoder panel.
Claim 15
Dependent Claim
99 words
An anti-theft system for use on a vehicle comprising: an encoder panel including a plurality of switch means which may be manually energized in a plurality of sequences to generate a code, decoder circuitry coupled to receive said code and for generating a control signal in response thereto, means for allowing movement of said vehicle drive train and operation of the ignition system of said vehicle motor upon reception of said control signal, and means for enabling operation of said vehicle ignition system and drive train for a predetermined number of times without requiring energization of said switch means.
Claim 16
Dependent Claim
99 words
An anti-theft system for use on a vehicle comprising: an encoder panel including a plurality of switch means which may be manually energized in a plurality of sequences to generate a code, decoder circuitry coupled to receive said code and for generating a control signal in response thereto, means for allowing movement of said vehicle drive train and operation of the ignition system of said vehicle motor upon reception of said control signal, and means for enabling operation of said vehicle ignition system and drive train for a predetermined number of times without requiring energization of said switch means.
Claim 17
Dependent Claim
137 words
A security system for a vehicle comprising: an encoder mechanism including means for entering sequentially a plurality of codes therein, decoder circuitry responsive to the code entered within said encoder mechanism and located in an area of said vehicle of difficult accessibility, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is entered into said encoder mechanism, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, means for resetting said decoder circuitry when said vehicle motor is started, and means for overriding said decoder circuitry for a predetermined number of cycles of operation of said vehicle to enable operation of said vehicle without the requirement of the entry of a code into said encoder mechanism.
Claim 18
Dependent Claim
137 words
A security system for a vehicle comprising: an encoder mechanism including means for entering sequentially a plurality of codes therein, decoder circuitry responsive to the code entered within said encoder mechanism and located in an area of said vehicle of difficult accessibility, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is entered into said encoder mechanism, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, means for resetting said decoder circuitry when said vehicle motor is started, and means for overriding said decoder circuitry for a predetermined number of cycles of operation of said vehicle to enable operation of said vehicle without the requirement of the entry of a code into said encoder mechanism.
Claim 19
Dependent Claim
117 words
A security system for a vehicle comprising: an encoder mechanism including means for having a plurality of codes sequentially entered therein, decoder circuitry responsive to the code entered within said encoder mechanism and located in an area of said vehicle of difficult accessibility, said decoder circuitry including logic circuits responsive to digital input signals from said encoder mechanism, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is eNtered into said encoder mechanism, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, and means for resetting said decoder circuitry when said vehicle motor is started.
Claim 20
Dependent Claim
117 words
A security system for a vehicle comprising: an encoder mechanism including means for having a plurality of codes sequentially entered therein, decoder circuitry responsive to the code entered within said encoder mechanism and located in an area of said vehicle of difficult accessibility, said decoder circuitry including logic circuits responsive to digital input signals from said encoder mechanism, means operable in dependence upon said decoder circuitry for locking the drive train of said vehicle until a predetermined code is eNtered into said encoder mechanism, means for inhibiting the ignition system of said vehicle motor until said predetermined code is entered into said encoder mechanism, and means for resetting said decoder circuitry when said vehicle motor is started.
Claim 21
Dependent Claim
95 words
A security system for preventing the unauthorized use of a vehicle comprising: a encoder means accessible to said vehicle operator for generation of electrical representations of the code sequence entered into said encoder means, said encoder means being disposed in the passenger compartment of said vehicle, decoder means disposed in the transmission housing of said vehicle and connected to said encoder means, said decoder means generating an energizing signal only when electrical representations are received according to a predetermined code sequence, and means normally preventing movement of said vehicle until reception of said energizing signal.
Claim 22
Dependent Claim
95 words
A security system for preventing the unauthorized use of a vehicle comprising: a encoder means accessible to said vehicle operator for generation of electrical representations of the code sequence entered into said encoder means, said encoder means being disposed in the passenger compartment of said vehicle, decoder means disposed in the transmission housing of said vehicle and connected to said encoder means, said decoder means generating an energizing signal only when electrical representations are received according to a predetermined code sequence, and means normally preventing movement of said vehicle until reception of said energizing signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |