US3871475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Motor vehicle security system and security method
Assignee: ANCHORLOK CORP A CORP
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Filing: 1973-07-19
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Granted: 1975-03-18
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Expires: 1993-07-19
Abstract
Abstract A motor vehicle security system for trucks, trailers and the like equipped with conventional fluid operated braking assemblies. The security system comprises a manually operable valve for controlling the application of fluid under pressure to the braking assemblies to manually set the vehicle brakes. The valve is arranged with a mechanical, key-operated lock for controlling and locking the valve in a selected position. When the valve is in a ''''locked'''' position it allows the brakes to be set and the vehicle maintained in situ to prevent the unauthorized movement thereof. The brake assemblies are also secured and locked to prevent the manual operation thereof by means of a conventional lockout tool.
Inventors
- 👤 Billy E Stevenson
- 👤 Thomas R Rumsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:33
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/16; B60R; B60R25/00; B60R25/01; B60R25/08; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
229 words
A motor vehicle security system comprising a vehicle having a plurality of wheels and at least one door, a source of pressurized air, controllable braking means coupled to the source of pressurized air, said braking means including mechanically powered alternate brake setting means coupled to the source of pressurized air and maintained in a deactuated brake setting condition in response to the application of pressurized air thereto and effective to automatically set the braking means upon failure of the pressurized air, said mechanically powered braking means including means for preventing the unauthorized operation of the braking means at said braking means, controllable locking means arranged on the motor vehicle and connected to control the locking and unlocking of at least the single door for the motor vehicle, lockable valve means coupled to said source of pressurized air and being manually operable to a locked condition for setting the mechanically powered brake setting means and locking same in the set position, said door locking means being coupled to the source of pressurized air through the lockable valve means to be placed in a locked and unlocked position by the corresponding operation of the lockable valve means, and control means accessible within the motor vehicle and coupled between said source of pressurized air and the locking means for controlling the application of the source of pressurized air to said locking means.
Claim 2
Dependent Claim
229 words
A motor vehicle security system comprising a vehicle having a plurality of wheels and at least one door, a source of pressurized air, controllable braking means coupled to the source of pressurized air, said braking means including mechanically powered alternate brake setting means coupled to the source of pressurized air and maintained in a deactuated brake setting condition in response to the application of pressurized air thereto and effective to automatically set the braking means upon failure of the pressurized air, said mechanically powered braking means including means for preventing the unauthorized operation of the braking means at said braking means, controllable locking means arranged on the motor vehicle and connected to control the locking and unlocking of at least the single door for the motor vehicle, lockable valve means coupled to said source of pressurized air and being manually operable to a locked condition for setting the mechanically powered brake setting means and locking same in the set position, said door locking means being coupled to the source of pressurized air through the lockable valve means to be placed in a locked and unlocked position by the corresponding operation of the lockable valve means, and control means accessible within the motor vehicle and coupled between said source of pressurized air and the locking means for controlling the application of the source of pressurized air to said locking means.
Claim 3
Dependent Claim
22 words
A motor vehicle security system as defined in claim 1 wherein the controllable door locking means is mechanically powered lock setting means.
Claim 4
Dependent Claim
23 words
A motor vehicle security system as defined in claim 2 wherein the lock setting means is in the form of spring braking means.
Claim 5
Dependent Claim
46 words
A motor vehicle security system as defined in claim 1 wherein the control means is coupled between the source of pressurized air, the braking means and the locking means to control the application of the pressurized air to the braking means and locking means substantially simultaneously.
Claim 6
Dependent Claim
46 words
A motor vehicle security system as defined in claim 1 including unlocking means coupled to said locking means and mounted to be accessible outside to the motor vehicle for controlling the application of pressurized air to the locking means to thereby unlock the motor vehicle door.
Claim 7
Dependent Claim
49 words
A motor vehicle security system as defined in claim 1 including manually controlled valve means connected to said source of pressurized air to receive the pressurized air readily accessible to the vehicle operator from his normal driving position to control the venting of pressurized air from said locking means.
Claim 8
Dependent Claim
34 words
A motor vehicle security system as defined in claim 1 wherein the motor vehicle is a tractor-trailer combination and the lockIng means is located inside the trailer for locking at least one trailer door.
Claim 9
Independent Claim
131 words
A method for securing motor vehicles to prevent the theft thereof, the motor vehicle being of the type having a tractor and at least one trailer coupled thereto, including the steps of providing at least the trailer of a tractor-trailer combination with mechanically powered brake setting means, manually operating the mechanically powered brake setting means to set the brakes on at least the trailer, securing the set brake setting means at the brake to prevent unauthorized resetting of the brake setting means, providing at least the door of the trailer of the tractortrailer with a pneumatically operated lock, decoupling the tractor from the trailer to leave the trailer in situ in the locked and secured condition, and setting the lock for the trailer door before decoupling the tractor from the trailer.
Claim 10
Independent Claim
131 words
A method for securing motor vehicles to prevent the theft thereof, the motor vehicle being of the type having a tractor and at least one trailer coupled thereto, including the steps of providing at least the trailer of a tractor-trailer combination with mechanically powered brake setting means, manually operating the mechanically powered brake setting means to set the brakes on at least the trailer, securing the set brake setting means at the brake to prevent unauthorized resetting of the brake setting means, providing at least the door of the trailer of the tractortrailer with a pneumatically operated lock, decoupling the tractor from the trailer to leave the trailer in situ in the locked and secured condition, and setting the lock for the trailer door before decoupling the tractor from the trailer.
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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |