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US3656574A Expired / Lapsed US ⏱️ 0.0 years remaining

Vehicle locking circuit

Assignee: Individual
•
Filing: 1970-07-13
•
Granted: 1972-04-18
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Expires: 1990-07-13
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Abstract

Abstract A circuit is disclosed for locking and unlocking the brakes, ignition and hood of a vehicle so as to secure it from theft. A key-operated master switch is effective in its plurality of positions to: (a) open the ignition-power source circuit; (b) energize a circuit to unlock a normally closed hood lock; (c) energize a circuit which effects the opening and closing of brake locks; and (d) open all electrical circuits of the vehicle. The ignition of the vehicle is connected to the power source via the master switch and is energized only when that switch is in the ''''ignition on'''' position. When the master switch is in the brake locking and unlocking position, a secondary switch effects selective actuation of a motor; when the secondary switch is in the ''''brake lock'''' position, a half stroke of the motor closes brake locks, and in the ''''brake unlock'''' position, the completed stroke of the motor opens the brake locks. The hood lock, being normally closed, is opened when the master switch is in the ''''hood unlock'''' position due to the energization of the hood unlock circuit. In the remaining master switch position, the power source is isolated from all electrical circuits of the vehicle, ensuring that the ignition, hood and brakes all remain locked during the absence of the owner or user from the vehicle.

Inventors

  • 👤 Joseph Edwards

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 10:13
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60R; B60R25/00; B60R25/01; B60R25/04; B60T3/00

Claims Analysis

Total Claims: 13
Claim 1
Independent Claim 156 words
For use in a vehicle comprising brakes, an engine compartment and a hood enclosing said engine compartment, an anti-theft system comprising a power source, brake locking means operatively connected to said brakes and effective when actuated to lock said brakes, means connected to said brake locking means and effective when energized by said power source to deactuate said brake locking means, thereby to unlock said brakes, hood locking means operatively connected to said hood and effective when actuated to lock said hood, means operatively connected to said hood locking means and effective when energized by said power source to deactuate said hood locking means, thereby to unlock said hood, and master switch means operatively connected to said power source and having a first position energizing said brake lock deactuating means, a second position energizing said hood lock deactuating means, and a third position energizing neither said brake lock deactuating means nor said hood lock deactuating means.
Claim 2
Dependent Claim 156 words
For use in a vehicle comprising brakes, an engine compartment and a hood enclosing said engine compartment, an anti-theft system comprising a power source, brake locking means operatively connected to said brakes and effective when actuated to lock said brakes, means connected to said brake locking means and effective when energized by said power source to deactuate said brake locking means, thereby to unlock said brakes, hood locking means operatively connected to said hood and effective when actuated to lock said hood, means operatively connected to said hood locking means and effective when energized by said power source to deactuate said hood locking means, thereby to unlock said hood, and master switch means operatively connected to said power source and having a first position energizing said brake lock deactuating means, a second position energizing said hood lock deactuating means, and a third position energizing neither said brake lock deactuating means nor said hood lock deactuating means.
Claim 3
Dependent Claim 14 words
The anti-theft system of claim 1, wherein said master switch means is key operated.
Claim 4
Dependent Claim 27 words
The anti-theft system of claim 1, wherein said vehicle comprises an ignition means, said master switch means being interposed between said power source and said ignition means.
Claim 5
Dependent Claim 14 words
The anti-theft system of claim 3, wherein said master switch means is key operated.
Claim 6
Dependent Claim 24 words
The anti-theft system of claim 3, wherein said master switch means has a fourth position which connects said ignition means to said power source.
Claim 7
Dependent Claim 14 words
The anti-theft system of claim 5, wherein said master switch means is key operated.
Claim 8
Dependent Claim 58 words
The anti-theft system of claim 5, further comprising secondary switch means interposed between said master switch means and said brake lock deactuating means and effective in a first position to connect said brake lock deactuating means to said master switch means and in a second position to disconnect said brake lock deactuating means from said master switch means.
Claim 9
Dependent Claim 14 words
The anti-theft system of claim 7, wherein said master switch means is key operated.
Claim 10
Dependent Claim 58 words
The anti-theft system of claim 1, further comprising secondary switch means interposed between said master switch means and said brake lock deactuating means and effective in a first position to connect said brake lock deactuating means to said master switch means and in a second position to disconnect said brake lock deactuating means from said master switch means.
Claim 11
Dependent Claim 14 words
The anti-theft system of claim 9, wherein said master switch means is key operated.
Claim 12
Dependent Claim 41 words
The anti-theft system of claim 1, further comprising cut off switch means operatively connected between said hood lock deactuating means and said power source and effective, in response to the opening of said hood, to de-energize said hood lock deactuating means.
Claim 13
Dependent Claim 22 words
The anti-theft system of claim 11, wherein said hood locking means is automatically actuated in response to the closing of said hood.

References Cited (Backward Citations)

US1843966A Cited
US2819770A Cited
US2990903A Cited
US3559755A Cited
US3549207A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-04-18 1975-10-18 1976-04-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-04-18 1979-10-18 1980-04-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-04-18 1983-10-18 1984-04-18 $7700.00 Window Closed / Lapsed

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