Coupler Lockout Device for Trailer Theft Prevention
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Solution Overview
Problem
Heavy equipment and trailers with couplers are vulnerable to theft due to their size and weight, and existing security measures are inadequate to prevent unauthorized access and use.
Innovation Solution
A coupler lock assembly that includes a body with a coupler engagement portion and a movable coupler engagement member, secured by a locking mechanism, which can be adjusted to fit various coupler designs and sizes, preventing withdrawal of the coupler from the assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coupler is made larger and heavier, then it becomes less prone to theft, but it still remains vulnerable to theft by individuals with appropriate towing vehicles
Solution Approach 1:
The coupler system is divided into two functional parts: the coupler itself (which remains large and heavy for normal operation) and a separate lockout device (which provides security). The lockout device includes a body member, a movable engagement member, and a securing mechanism that can be independently controlled. This segmentation allows the coupler to maintain its theft-deterrent size while adding a separate security layer that prevents unauthorized access.
Solution Approach 2:
The lockout device acts as an intermediary between the coupler and any potential towing vehicle. Even if someone has a truck with a trailer hitch configured to connect with the coupler, the lockout device prevents connection by blocking the coupler's engagement surfaces. The intermediary device must be unlocked by authorized individuals before the coupler can be accessed or moved.
2Reliability
If a lockout device is added to secure the coupler, then unauthorized access is prevented, but the device complexity increases
Solution Approach 1:
The lockout device is segmented into three main components: a body member (which attaches to the coupler), a movable engagement member (which blocks access to the coupler), and a securing mechanism (which locks the engagement member in place). This segmentation allows each component to have a specific, simple function while collectively providing comprehensive security.
Solution Approach 2:
The engagement member is designed to be movable rather than fixed, allowing it to be positioned to block the coupler's engagement surfaces and then secured in that position. The movable design enables the same basic structure to adapt to different coupler types and sizes without requiring complex adjustment mechanisms, thereby maintaining simplicity while providing versatile security.
3Adaptability or versatility
If the lockout device is designed to accommodate various coupler designs and sizes, then versatility is improved, but the device complexity increases
Solution Approach 1:
The engagement member is designed to be movable along the body member, allowing it to be positioned at different locations to accommodate various coupler sizes and designs. The securing mechanism can lock the engagement member in multiple positions. This dynamic, adjustable design provides versatility without requiring multiple different lockout devices for different coupler types.
Solution Approach 2:
The lockout device is designed with universal features that allow it to work with various coupler types. The body member can attach to different coupler configurations, and the movable engagement member can be positioned to block different engagement surfaces. This multi-functional design allows a single lockout device to secure various coupler designs and sizes, eliminating the need for multiple specialized devices.
Data Source
AI summary
An assembly for restricting access to a coupler includes a body having a coupler engagement portion for engagement with a first surface of a coupler, a coupler engagement member laterally movable within a laterally extending slot in the body, with the coupler engagement member extending perpendicularly from the slot for engagement with a second surface of the coupler opposite the first surface. The assembly further includes a securing mechanism for selectively securing the coupler engagement member relative to the body against lateral movement away from the coupler engagement portion. When at least a portion of the coupler is received between the coupler engagement portion and the coupler engagement member and the coupler engagement member is secured in a coupler lockout position, at least one of the coupler engagement portion and the coupler engagement member prevents withdrawal of the coupler from the assembly.