Magnetic Windshield Cleaning for Interior Light Scattering Film

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Solution Overview

Problem

Existing devices for removing light scattering film (LSF) from vehicle windshields are cumbersome, ineffective, and costly, leading to safety risks due to driver distraction and glare, as they often leave streaks and are not easily transportable or reusable.

Innovation Solution

A lightweight, reusable magnetic cleaning system using rare earth magnets arranged in a linear array across the windshield, coupled with a cleaning cloth or material, that is attached to the wiper assembly to effectively remove LSF with minimal effort and reduce streaking.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If angled wiping tools are used to reach sloped surfaces, then cleaning effectiveness is improved, but device complexity and ease of operation deteriorate

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidease of operation

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent replaces complex mechanical angled wiping tools with a magnetic field-based system. Magnets mounted on the windshield interior automatically attract and hold cleaning elements against the sloped surface without requiring mechanical adjustment or complex tooling, thereby maintaining cleaning effectiveness while dramatically improving ease of operation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic cleaning system is self-adjusting to the windshield's slope. The magnetic attraction force automatically positions the cleaning elements against the glass at the correct angle, eliminating the need for manual positioning or complex mechanical adjustment mechanisms, thus improving both ease of operation and cleaning effectiveness.

Inventive Principle:

Principle #25Self-service

2Device complexity

If manual cleaning methods are used, then device complexity is reduced, but productivity and reliability deteriorate

Engineering Contradiction:

Improvedevice complexityVSAvoidproductivity

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent replaces manual mechanical cleaning with a magnetic field-based system that automatically holds cleaning elements against the windshield. This simple magnetic system dramatically improves cleaning productivity and reliability while maintaining low device complexity, as it requires no power source, motors, or complex mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The magnetic field acts as an intermediary force that transmits holding power from the magnets to the cleaning elements through the windshield glass. This allows the system to achieve high productivity and reliability through a simple magnetic interaction rather than complex mechanical or powered systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If chemical cleaning agents are used, then cleaning effectiveness is improved, but object-generated harmful factors worsen

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidharmful factors

Core Design Contradiction:

Manufacturing precisionVSObject-generated harmful factors

Solution Approach 1:

The patent employs disposable or reusable dry cleaning elements (such as paper towels, cloths, or nonwoven materials) that are attracted to magnets on the windshield interior. These elements physically absorb and remove LSF without introducing chemical contaminants, thereby maintaining cleaning effectiveness while eliminating the harmful effects of chemical residues.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent converts the magnetic attraction force, which could potentially hold contaminants against the glass, into a beneficial mechanism that presses clean drying elements against the windshield interior. This magnetic pressure enhances the physical absorption and removal of LSF without requiring chemicals, thereby eliminating harmful chemical factors while maintaining cleaning effectiveness.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

The system efficiently removes LSF with minimal effort, reducing safety hazards by allowing periodic cleaning without distracting the driver and minimizing streaks, while being economical and easily storable.

Implementation Method 1

a magnetically associated cleaning element that is moved across the interior surface of a windshield by an interactive magnetic force transmitted through the windshield, with magnets associated with the wiper assembly on the other side of the glass

Methodology Applied

Scientific EffectMagnetic field: Magnetic Field

Data Source

PatentUS20260061969A1Method for Cleaning Light Scattering Film From the Interior of a Windshield of a Vehicle

Publication Date: 2026.03.05 KOVARIK JOSEPH E

AI summary

The present invention discloses a system and method for cleaning the light scattering film (LSF) from the surface of a windshield in a vehicle, and more particularly, is directed to a magnetically associated cleaning element that is moved across the interior surface of a windshield by an interactive magnetic force transmitted through the windshield, with magnets associated with the wiper assembly on the other side of the glass.