Gutter Debris Cover with Dual-Mesh Segmentation

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Solution Overview

Problem

Open-mouth gutters tend to clog due to debris accumulation, and existing gutter cover solutions either lack effectiveness or require complex installation methods.

Innovation Solution

A gutter debris cover featuring an elongated screening element with open mesh openings and recurved attachment members that securely attach to the gutter without fasteners, utilizing two screening elements with progressively smaller mesh sizes to prevent debris entry, ensuring fluid flow while lodging in place.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a simple screen is used to cover the gutter, then the installation is simple, but the debris prevention effectiveness is insufficient

Engineering Contradiction:

Improveinstallation simplicityVSAvoiddebris prevention effectiveness

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The screen is divided into multiple layers with different mesh sizes. The first layer has larger openings for general debris prevention, while the second layer has smaller openings for finer debris filtration. This segmentation allows each layer to address specific debris sizes, improving overall effectiveness while maintaining installation simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the screen have different mesh densities. The first screen layer uses a coarser mesh pattern suitable for capturing larger debris, while the second screen layer uses a finer mesh pattern for capturing smaller debris. This local differentiation optimizes debris prevention effectiveness across different regions of the screen.

Inventive Principle:

Principle #3Local quality

2Reliability

If a rigid perforated cover is used, then the debris prevention is effective, but the installation complexity increases

Engineering Contradiction:

Improvedebris prevention effectivenessVSAvoidinstallation complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The screen employs flexible mesh materials that can be easily formed and installed. The mesh structure is inherently flexible, allowing it to conform to the gutter shape and be installed without complex rigid frameworks. This flexibility significantly reduces installation complexity while maintaining effective debris prevention through the mesh opening structure.

Inventive Principle:

Principle #30Flexible shells and thin films

3Device complexity

If a single screen layer is used, then the installation is simple, but the debris filtration capability is limited

Engineering Contradiction:

Improvescreen structure simplicityVSAvoiddebris filtration capability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The screen combines two different mesh materials with different opening sizes to create a composite structure. The first mesh layer uses a coarser material pattern, while the second mesh layer uses a finer material pattern. This composite approach enhances debris filtration capability by capturing both large and small debris particles effectively.

Inventive Principle:

Principle #40Composite materials

4Strength

If fasteners or adhesives are used to attach the cover, then the connection is secure, but the installation time and complexity increase

Engineering Contradiction:

Improveconnection securityVSAvoidinstallation time

Core Design Contradiction:

StrengthVSLoss of time

Solution Approach 1:

The screen features self-attaching capabilities where the screen material itself forms attachment structures that secure it to the gutter without requiring external fasteners or adhesives. The screen's own structural elements engage with the gutter edges, providing secure connection through the screen's design rather than through separate attachment mechanisms.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The attachment function is merged into the screen structure itself. The screen edges are formed with integrated attachment features that combine the screening function with the attachment function in a single component, eliminating the need for separate fasteners or adhesives and reducing installation time.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS7627991B1Gutter debris cover

Publication Date: 2009.12.08 FELDHAUS DANIEL E

AI summary

A gutter debris cover having an elongated screening element with openings for fluid flow therethrough. Attachment members are provided on either edge of the screening element, with each attachment member having a cross-sectional configuration. In one form, the cross-sectional configurations are mirror images of one another and are generally recurved to connect to gutter elements. In another form of the invention, only the second or rear cross sectional configuration is recurved.