Door sensor for a trailer
First Claim
Patent Images
1. A system comprising:
- a trailer, said trailer having a door and a locking mechanism for securing said door when said door is in a closed position, said locking mechanism having a plurality of components; and
sensing means for sensing the presence of one of said components of said locking mechanism when said trailer door is in the secured and closed position.
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Accused Products
Abstract
A system is provided for sensing the presence of a standard component of a locking mechanism of a door of a trailer when the door is moved to the closed position and is secured. A sensor is provided on the trailer proximate to the locking mechanism. The sensor automatically reacts when a ferrous target comes within its sensing range. Control circuitry on the trailer processes and uses signals from the sensor to perform various functions.
53 Citations
14 Claims
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1. A system comprising:
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a trailer, said trailer having a door and a locking mechanism for securing said door when said door is in a closed position, said locking mechanism having a plurality of components; and
sensing means for sensing the presence of one of said components of said locking mechanism when said trailer door is in the secured and closed position. - View Dependent Claims (2, 3, 4)
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5. A system comprising:
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a trailer, said trailer having a door and a locking mechanism for securing said door when said door is in a closed position, said locking mechanism including a lockrod which extends along the length of said door and has opposite ends, a cam provided on at least one end of said lockrod, and a keeper mounted on said trailer, said cam being releasably engageable with said keeper such that when said cam is engaged with said keeper, said door is secured; and
sensing means for sensing the presence of said cam when said cam is engaged with said keeper when said trailer door is in the secured and closed position. - View Dependent Claims (6, 7, 8)
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9. A method comprising the steps of:
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providing a trailer having a door and a locking mechanism for securing said door when said door is in a closed position, said locking mechanism having a plurality of components, and control circuitry provided on said trailer;
providing sensing means for sensing the presence of one of said components of said locking mechanism;
using said sensing means to sense whether one of said components of said locking mechanism is within a sensing range of said sensing means and sending a signal to said control circuitry; and
said control circuitry determining whether said door is closed and secured or open and unsecured. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification