Handheld Traction Measurement Device with Calibrated Load
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Solution Overview
Problem
Current devices for measuring traction are large, bulky, complex, and expensive, making them difficult to operate and not suitable for portable use.
Innovation Solution
A lightweight, hand-held device that applies a calibrated load to a pad using a translating assembly and measures the peak break-away torque to determine available traction between a body and a surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large, heavy apparatus is used to measure traction, then measurement capability is achieved, but portability and ease of operation deteriorate
Solution Approach 1:
The patent extracts the essential measurement function from the complex towing/rolling apparatus and implements it in a simplified hand-held device. The core function of measuring break-away torque is isolated and implemented using minimal components: a pad, torque measurement mechanism, and hand-held housing, eliminating unnecessary hydraulic, electrical, and electronic systems while maintaining measurement capability.
Solution Approach 2:
The patent creates a simplified copy of the traction measurement function that doesn't require the full complexity of traditional systems. Instead of copying the entire towing apparatus, it replicates only the essential measurement principle (break-away torque) using a much lighter, portable implementation that achieves the same measurement objective.
2Measurement precision
If a complex apparatus with hydraulic and electrical systems is used, then traction measurement is achieved, but device complexity and cost increase
Solution Approach 1:
The patent removes all hydraulic, electrical, and electronic systems from the measurement apparatus, retaining only the essential mechanical components needed to measure break-away torque. This extraction of the core measurement function eliminates complex subsystems while maintaining the ability to determine traction values.
Solution Approach 2:
The device uses passive mechanical means to achieve measurement without requiring external power sources, control systems, or complex instrumentation. The spring-loaded pad and torque measurement mechanism operate autonomously through mechanical interaction with the surface, eliminating the need for external systems.
3Measurement precision
If a large apparatus is used, then measurement accuracy is achieved, but ease of operation and portability worsen
Solution Approach 1:
Instead of having the apparatus move over the surface (towing/rolling), the patent inverts the approach by placing the measurement pad directly on the surface and applying force through the hand-held device. This inversion simplifies operation from complex navigation and towing to simple manual application and reading.
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
Enables accurate and repeatable measurement of traction with a portable device, overcoming the limitations of existing systems by providing a user-friendly and cost-effective solution.
Implementation Method 1
a spring that is biased against the pad so as to apply a calibrated load to the pad
Implementation Method 2
traction is most commonly defined as adhesive, static or, generally, any friction between a body and a surface on which the body is to move
Data Source
AI summary
A method and apparatus for determining a value that correlates to available traction that is a lightweight, hand-held, portable apparatus that may include a pad of material, a translating assembly, a load assembly, a first device to move the pad and a second device that measures a peak amount of break-away torque. The load assembly facilitates application of a calibrated load to the pad as a result of but regardless of a force applied to the apparatus.