Theft protection device for a wheeled trailers
First Claim
1. In a wheeled load carrier or lorry provided with spring-closed pneumatically-opened brakes, said carrier being connectable to a motorized truck section, an anti-theft protection apparatus that when deployed inhibits the unlocking of air-release spring-operated wheel brakes of said carrier, said apparatus comprising:
- a lockable air valve able to be inserted into a compressed air line connecting a source of compressed air to said brakes, wherein closure of said valve prevents air passage for release of said brakes and wherein opening of said valve allows passage for compressed air to release said brakes.
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Accused Products
Abstract
The invention relates to vehicle theft prevention. The invention provides a pneumatic method of preventing the theft of drawn load carriers such as wagons/trailers and semitrailers. Some embodiments of invention comprise a wheeled load carrier of the type fitted with spring-closed pneumatically-opened brakes, the carrier being connectable to a motorized truck section, the carrier having an anti-theft protection device, which when deployed inhibits the unlocking of air-release spring-operated wheel brakes of the carrier, the device including a lockable air valve inserted into a compressed air line connecting a source of compressed air to the brakes, closure of the valve preventing air passage for release of the brakes and opening of the valve allowing passage for compressed air to release the brakes.
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Citations
11 Claims
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1. In a wheeled load carrier or lorry provided with spring-closed pneumatically-opened brakes, said carrier being connectable to a motorized truck section, an anti-theft protection apparatus that when deployed inhibits the unlocking of air-release spring-operated wheel brakes of said carrier, said apparatus comprising:
a lockable air valve able to be inserted into a compressed air line connecting a source of compressed air to said brakes, wherein closure of said valve prevents air passage for release of said brakes and wherein opening of said valve allows passage for compressed air to release said brakes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A conversion kit for retrofitting an anti-theft protection device to a carrier, said kit comprising:
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a two-way lockable air valve with valve attachment hardware;
tubing for connecting said air valve between an existing air inlet fitting and pneumatically operated brakes of said carrier;
tube fitting hardware; and
installation instructions.
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11. A conversion kit for retrofitting an anti-theft protection device to a carrier, said kit comprising:
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an openable, lockable steel case attachable to said carrier;
a two-way air valve contained in said case;
two tubing lengths extending through said case each ready connected at one end to said air valve;
tube fitting hardware; and
installation instructions.
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Specification