L-Track Fitting With Tactile Lock Indicator Under Contamination
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Solution Overview
Problem
Existing L-track systems for securing loads in transportation fail to provide reliable visual and tactile confirmation of the locking mechanism's engagement due to contamination or damage, and may require manual manipulation to verify proper engagement.
Innovation Solution
A track fitting with engagement flanges, a locking slide biased by a spring, locking lugs, and an indicator pin biased by a spring, providing both visual and tactile confirmation of the locked position, and optionally including electronic monitoring for enhanced status indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual indicators are used to indicate locked position, then locking status can be verified, but contamination or damage causes indicator failure
Solution Approach 1:
The patent introduces an intermediary mechanism (the indicator pin that extends through the locking slide and body) that physically connects the locking state to the indication state. This intermediary ensures that the indication is directly coupled to the actual locking condition, making it resistant to contamination and damage that would affect purely visual indicators.
Solution Approach 2:
The indicator pin automatically indicates the locking status through its own position relative to the body and locking slide, without requiring separate actuation or complex mechanisms. The system uses its own structural state to provide the indication, making it inherently reliable against contamination and damage.
2Strength
If manipulation such as latching or bolting is used to secure the locking mechanism, then the mechanism can be secured in place, but proper engagement cannot be indicated
Solution Approach 1:
The patent implements feedback by providing continuous visual and tactile information about the locking mechanism's engagement status through the indicator pin. The indicator pin's position provides real-time feedback on whether the locking mechanism is properly engaged, eliminating the information loss that occurs with simple latching or bolting mechanisms.
Solution Approach 2:
The patent replaces complex manipulation mechanisms (latching, bolting) with a simpler sliding mechanism that inherently provides engagement indication. The sliding action combined with the indicator pin eliminates the need for separate indication mechanisms, substituting a more efficient mechanical system.
3Device complexity
If a single indication method is used, then the system is simple, but it fails under contamination or damage conditions
Solution Approach 1:
The patent merges multiple indication methods (visual indication through the indicator pin extending above the body, and tactile indication through the groove in the indicator pin) into a single integrated mechanism. This combination provides redundant indication pathways within one component, maintaining simplicity while significantly improving reliability against contamination and damage.
Solution Approach 2:
The patent applies different qualities to different parts of the indicator pin - the upper portion provides visual indication when extending above the body, while the groove provides tactile indication. This local differentiation allows the single component to serve multiple indication functions, improving reliability without increasing overall system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures reliable visual, tactile, and audible confirmation of the locked state, functioning regardless of orientation and contamination, with optional electronic feedback for enhanced safety and reliability.
Implementation Method 1
A locking slide is slidably attached to the body and biased downward by a locking slide spring
Implementation Method 2
An indicator pin is slidably attached to the body and biased downward by an indicator pin spring
Data Source
AI summary
A track fitting comprising a body with a plurality of engagement flanges is disclosed. The engagement flanges extend laterally from the body to protrude below a top of an L-track. A locking slide is slidably attached to the body and biased downward by a locking slide spring. At least one locking lug extends down from the locking slide to engage with the L-track in a locking position. An indicator pin is slidably attached to the body and biased downward by an indicator pin spring.