Exterior Cladding Panel with Irregular Shingle Gaps

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Solution Overview

Problem

Conventional exterior cladding systems, such as polymer-based siding, often result in excessive waste and undesirable patterns due to the repetition of single-course panels, and thermal expansion leads to noticeable changes in gap widths, disrupting the simulated wood surface appearance.

Innovation Solution

An exterior cladding panel with a series of simulated shingles featuring irregular gap widths between adjacent shingles, which are designed to create a randomized pattern and mask thermal expansion changes, incorporating locking clips and legs for easy installation and structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If single-course siding panels are used to reduce waste in gable end applications, then material waste is reduced, but undesirable repetitive patterns appear on the exterior surface

Engineering Contradiction:
Improvematerial wasteVSAvoidexterior pattern appearance
Core Design Contradiction:
Loss of substanceVSShape

Solution Approach 1:

The patent applies asymmetry by creating irregular gap widths between simulated shingles within each panel. The gaps vary in size and distribution, preventing uniform repetitive patterns while maintaining the single-course panel configuration. This asymmetric gap pattern masks the repetition that would otherwise occur with uniform panels.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent implements local quality by varying the gap characteristics at different locations within the panel. Each gap between adjacent shingles has different width and positioning, creating local variations that collectively mask the overall repetitive pattern. This allows the panel to maintain a natural, non-uniform appearance despite the regular panel installation pattern.

Inventive Principle:
Principle #3Local quality

2Manufacturing precision

If uniform gap widths are used between simulated shingles, then manufacturing precision is improved, but thermal expansion changes become noticeable and disrupt the wood surface appearance

Engineering Contradiction:
Improvegap width uniformityVSAvoidsimulated wood surface appearance
Core Design Contradiction:
Manufacturing precisionVSShape

Solution Approach 1:

The patent deliberately introduces asymmetry in gap widths between simulated shingles. Instead of uniform gaps, the design incorporates varying gap sizes that create an irregular pattern. This asymmetric configuration masks the visual impact of thermal expansion, as the variations in gap width are already present and do not create noticeable changes when panels expand or contract.

Inventive Principle:
Principle #4Asymmetry

Solution Approach 2:

The patent converts the potential harm of visible gap changes due to thermal expansion into a benefit by pre-introducing gap variations. The irregular gap pattern, which could be seen as a manufacturing deviation, actually serves to mask thermal expansion effects, making the siding appear more natural and less affected by temperature changes.

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

3Shape

If irregular gap widths are used between simulated shingles, then thermal expansion effects are masked, but manufacturing complexity increases

Engineering Contradiction:
Improvethermal expansion maskingVSAvoidpanel manufacturing complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent applies parameter changes by varying the gap width parameter between adjacent simulated shingles. During the molding process, different gap widths are introduced at different locations, creating the irregular pattern that masks thermal expansion. This is achieved through controlled variations in the molding parameters rather than complex post-processing.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent segments the panel into multiple simulated shingles with varying gap characteristics between them. By dividing the panel into discrete shingle elements with different gap widths, the complexity is distributed across multiple simple components rather than requiring complex overall panel design. Each shingle remains relatively simple, but their arrangement creates the desired irregular pattern.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS11220825B2Single course exterior cladding panel
Publication Date: 2022.01.11 CERTAINTEED LLC
  • US11220825B2 patent drawing
  • US11220825B2 patent drawing
  • US11220825B2 patent drawing

AI summary

One aspect of the disclosure is an exterior cladding panel including a first end, a second end, and a series of locking clips extending from a front face of the exterior cladding panel and positioned along the first end of the exterior cladding panel. The exterior cladding panel also includes a locking leg extending from a rear face of the exterior cladding panel and positioned along a middle portion between the first end and the second end. The exterior cladding panel also includes a series of simulated shingles positioned in a single course between the first end and the second end, including a series of gaps separating adjacent shingles. Each gap extends lengthwise from the second end to the middle portion of the exterior cladding panel, and includes a first width that differs from a second width of at least one adjacent gap in the series of gaps.