US3755777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition code override device
Assignee: Individual
•
Filing: 1971-08-12
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Granted: 1973-08-28
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Expires: 1991-08-12
Abstract
Abstract An automobile anti-theft system has an override mechanism for the ignition lock normally to prevent insertion of the ignition key into the lock. A number of pushbuttons located on the instrument panel are labeled to identify a secret code, and the bushbuttons are electrically coupled to the override mechanism to disable the mechanism when the proper code is selected. The pushbuttons are also electrically coupled to an alarm so that selecting an improper code activates the alarm.
Inventors
- 👤 J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:09
CPC Classifications
B; B60; B60R; B60R25/00; B60R25/10; B60R25/1003; B60R25/01; B60R25/04; B60R25/1001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
Apparatus for controlling the insertion of a key into a key operated automobile ignition lock of an automobile ignItion system, the apparatus comprising: a. a plurality of selectively operable sensing means defining properly selected sensing means and improperly selected sensing means; b. a key barrel coupled with the automobile ignition system and adapted to receive a key; c. an outer barrel in which the key barrel is disposed; d. locking means movable between a normally locked position preventing turning of the key barrel relative to the outer barrel and an unlocked position permitting turning of the key barrel relative to the outer barrel; and e. electrical lock control means operable in response to actuation of the properly selected sensing means to move the locking means from its normally locked position to it unlocked position to thereby allow a key to be inserted into the key barrel and the key barrel to be turned relative to the outer barrel.
Claim 2
Dependent Claim
158 words
Apparatus for controlling the insertion of a key into a key operated automobile ignition lock of an automobile ignItion system, the apparatus comprising: a. a plurality of selectively operable sensing means defining properly selected sensing means and improperly selected sensing means; b. a key barrel coupled with the automobile ignition system and adapted to receive a key; c. an outer barrel in which the key barrel is disposed; d. locking means movable between a normally locked position preventing turning of the key barrel relative to the outer barrel and an unlocked position permitting turning of the key barrel relative to the outer barrel; and e. electrical lock control means operable in response to actuation of the properly selected sensing means to move the locking means from its normally locked position to it unlocked position to thereby allow a key to be inserted into the key barrel and the key barrel to be turned relative to the outer barrel.
Claim 3
Dependent Claim
104 words
Apparatus according to claim 1 in which the key barrel is in a first predetermined position relative to the outer barrel when the locking means prevents turning of the key barrel relative to the outer barrel; and further including second locking means defining a locked position which prevents turning of the key barrel relative to the outer barrel when the key barrel is in a second predetermined position relative to the outer barrel, the second locking means being operable in response to actuation by a dummy key to permit rotation of the key barrel relative to the outer barrel from the second predetermined position.
Claim 4
Dependent Claim
125 words
Apparatus according to claim 1 in which the key barrel is in a first predetermined position relative to the outer barrel when the locking means prevents turning of the key barrel relative to the outer barrel; and further including second locking means defining a locked position which prevents turning of the key barrel relative to the outer barrel when the key barrel is in a second predetermined position relative to the outer barrel and when a dummy key is present in the key barrel to actuate the second locking means, the second locking means being operable in response to removal of the dummy key from the key barrel to permit rotation of the key barrel relative to the outer barrel from the second predetermined position.
Claim 5
Dependent Claim
56 words
Apparatus according to claim 3 in which the position of the key barrel relative to the outer barrel defines a third predetermined position in which the engine of the automobile is on, and including means for sounding an alarm when a key is in the key barrel when the latter is in the third predetermined position.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |