Self-supporting Gutter Guard with Girder Framework
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Solution Overview
Problem
Existing gutter guard systems face challenges in maintaining effectiveness while being self-supporting, durable, easy to install, and requiring minimal maintenance, especially in heavy weather conditions.
Innovation Solution
A self-supporting gutter guard device utilizing a one-piece formed perforated sheet material with a girder framework, eliminating the need for separate framed supports or attachment brackets, and featuring a bridge member with a decking material and a plurality of orifices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a traditional gutter guard system is used, then debris prevention is achieved, but the system requires separate framed supports and attachment brackets increasing device complexity
Solution Approach 1:
The patent combines the bridge member, girder framework, and attachment brackets into a single integrated component. The bridge member includes built-in attachment brackets at its ends that directly engage with the gutter, eliminating the need for separate support structures. This merging of functions into one piece reduces assembly steps and structural complexity while maintaining self-supporting capability.
Solution Approach 2:
The bridge member serves multiple functions simultaneously: it acts as a debris barrier, provides structural support through its girder framework, and facilitates attachment to the gutter through integrated brackets. This multi-functionality eliminates the need for separate components, reducing overall device complexity while ensuring reliable self-supporting performance.
2Ease of manufacture
If a one-piece formed perforated sheet material is used, then manufacturing cost and fabrication complexity are reduced, but structural strength may be compromised
Solution Approach 1:
The bridge member is segmented into distinct functional zones: perforated sheet material sections for debris filtration and rigid girder framework sections for structural support. The girders are positioned at critical locations (ends and mid-span) to provide maximum strength where needed while maintaining the overall one-piece constructed simplicity and manufacturing efficiency.
Solution Approach 2:
The bridge member combines different material properties within a single constructed piece: flexible perforated sheet material for water permeability and debris prevention, paired with rigid metal girders for structural strength. This composite construction achieves both ease of manufacture as a one-piece unit and sufficient structural strength for heavy weather conditions.
3Reliability
If the bridge member spans the gutter opening, then debris prevention is effective, but water flow capability must be maintained
Solution Approach 1:
The bridge member utilizes perforated sheet material with strategically placed openings that allow water to pass through while blocking debris. The perforations are sized and distributed to maintain adequate water flow capacity across the gutter opening while effectively preventing leaves and other debris from entering the gutter system.
Solution Approach 2:
The bridge member has different local qualities: the perforated sheet material provides water permeability and debris blocking in the deck area, while the solid girders provide structural support at specific locations. This local differentiation allows the structure to span the gutter opening effectively while maintaining water flow through the perforated sections.
Data Source
AI summary
A gutter guard device is described comprising a bridge member composed of a decking material having a plurality of orifices, and having a roof side and an opposing gutter lip side, at least one girder spanning a bottom surface of the bridge member from a proximal end of the bridge member's roof side to a proximal end of the bridge member's gutter lip side, a roof attachment member configured to attach to the roof side of the bridge member, and a gutter attachment member configured to attach to the gutter lip side of the bridge member, wherein the roof attachment member, the bridge member and the gutter attachment member are a single piece of material and the device is self-supporting.