Automated Friction Coating System for Roadway Uniformity

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Solution Overview

Problem

Conventional methods for applying friction-modifying coatings to roadways are labor-intensive, imprecise, and result in non-uniform coatings, leading to reduced safety and increased maintenance costs due to variability in binder-to-filler ratios, application thickness, and curing times.

Innovation Solution

An automated system mounted on a mobile platform applies binder and filler simultaneously, ensuring precise control over coating thickness and ratios through mechanical metering and inline mixing, reducing manual labor and increasing application efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual methods are used to apply friction-modifying coatings, then flexibility and adaptability are maintained, but labor intensity increases and coating uniformity deteriorates

Engineering Contradiction:

Improvemanual operation flexibilityVSAvoidapplication rate

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent replaces manual mechanical operations with an automated mobile coating system that uses mechanical delivery mechanisms, pumps, and spreaders to apply binder and filler materials. This substitution maintains operational control while dramatically increasing application rate and reducing labor intensity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The mobile coating system is designed to be self-contained with all necessary components (binder storage, filler storage, delivery mechanisms, spreaders) integrated into a single automated unit that can operate independently without continuous manual intervention, thereby increasing productivity while maintaining ease of operation through centralized control.

Inventive Principle:

Principle #25Self-service

2Device complexity

If manual mixing and application methods are used, then equipment complexity is reduced, but manufacturing precision of coating ratios deteriorates

Engineering Contradiction:

Improveapplication system complexityVSAvoidbinder-to-filler ratio control

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces manual mixing and application with automated mechanical systems including pumps with flow meters, inline mixers, and controlled delivery mechanisms. These mechanical systems provide precise metering and mixing of binder and filler materials, ensuring consistent binder-to-filler ratios while the overall system remains relatively simple in design.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If conventional manual application methods are used, then equipment cost is reduced, but coating uniformity and durability deteriorate

Engineering Contradiction:

Improvesystem simplicityVSAvoidcoating durability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The mobile coating system utilizes hydraulic or pneumatic pumps to deliver binder and filler materials at controlled rates, ensuring uniform application thickness and consistent mixing ratios. This hydraulic/pneumatic delivery mechanism provides reliable and durable coating application while maintaining relatively simple equipment design.

Inventive Principle:

Principle #29Pneumatics and hydraulics

4Loss of time

If manual coating application is used, then setup time is reduced, but loss of time due to labor intensity increases

Engineering Contradiction:

Improveapplication time per areaVSAvoidoverall application efficiency

Core Design Contradiction:

Loss of timeVSProductivity

Solution Approach 1:

The mobile coating system enables continuous application of binder and filler materials as it moves along the substrate, eliminating the start-stop nature of manual application. The system maintains continuous delivery and mixing operations, dramatically reducing the time required to cover large areas while improving overall application efficiency through sustained productive action.

Inventive Principle:

Principle #20Continuity of useful action

5Productivity

If automated systems are introduced to increase productivity, then application rate improves, but device complexity increases

Engineering Contradiction:

Improveapplication rateVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The mobile coating system is designed as a multi-functional integrated unit that combines binder storage and delivery, filler storage and delivery, mixing capabilities, and application mechanisms all in one mobile platform. This universal design increases application rate and productivity while avoiding the complexity of multiple separate systems by consolidating functions into a single coordinated unit.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10316478B2Systems and methods for automating the application of friction-modifying coatings

Publication Date: 2019.06.11 THE TRUESDELL CORP

AI summary

A system and method for the application of friction-modifying coatings to roadways, walkways, pathways and other areas subject to vehicular, human or animal traffic, the system and method comprising the controlled, simultaneous application of binder and filler to a surface of a substrate, using a mobile device which passes over the substrate as the binder and filler are being applied. The system includes a frame coupled to a vehicle. A spray bar is mounted on the frame and includes an array of spray nozzles coupled to a resin container. An air knife is mounted on the frame and coupled to an air compressor for generating an air curtain. An aggregate dispenser bar including at least one aggregate dispenser is coupled to an aggregate bin and mounted on the frame for dispensing aggregate.