Sliding Foundation Vent Frame for Mortar-Resistant Airflow Control
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Solution Overview
Problem
Current foundation vents are unstable, prone to mortar buildup, and poorly functional due to improper installation and incompatibility with standard brick sizes, leading to blocked airflow and operational issues.
Innovation Solution
A boxed plastic slider vent with a locking mortar track and oval finger grips, designed to be durable and compatible with standard brick sizes, featuring a u-shaped channel for secure mortar locking and easy sliding operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If thin plastic or aluminum slider vents are used, then the vent material is lightweight and easy to install, but the vent becomes unstable and prone to bending, rusting, and mortar buildup blocking airflow
Solution Approach 1:
The patent uses a composite material structure combining a rigid frame (aluminum or vinyl) with a durable plastic shutter assembly. The frame provides structural stability and resistance to bending, while the plastic components provide corrosion resistance and ease of operation. This composite construction resolves the contradiction by achieving both light weight and high reliability through material synergies.
Solution Approach 2:
The patent incorporates rounded corners and curved edges on the vent frame and shutter components. This curvature design eliminates sharp corners where mortar can accumulate and block airflow, while also strengthening the overall structure by distributing stress more evenly. The curved design prevents mortar buildup without requiring heavier materials.
2Ease of manufacture
If the vent is made thin and lightweight, then installation is easier, but mortar builds up around the opening blocking air flow and preventing the slider from sliding
Solution Approach 1:
The patent features rounded corners and curved edges on the vent frame and shutter components. This curvature design eliminates sharp corners where mortar can accumulate and block airflow, while also strengthening the overall structure by distributing stress more evenly. The curved design prevents mortar buildup without requiring heavier materials.
Solution Approach 2:
The patent applies different surface qualities to different parts of the vent. The sliding surfaces are made smooth and slightly rounded to prevent mortar adhesion, while the frame structure provides rigidity. The shutter edges are rounded to prevent mortar buildup, while the finger grips provide enhanced grip for operation. This localized quality differentiation resolves the contradiction between ease of installation and ease of operation.
3Adaptability or versatility
If standard brick sizes are used, then construction is conventional and cost-effective, but the vent does not course out with the majority of brick sizes sold residentially
Solution Approach 1:
The patent designs the vent frame with adjustable dimensions and modular components that can accommodate multiple brick sizes (common brick, modular brick, and block). The frame includes adjustment mechanisms and comes in multiple standard sizes to match different brick coursing patterns. This universality allows the same vent design to work with various conventional brick sizes without requiring custom manufacturing for each brick type.
4Reliability
If the vent frame is fully boxed with exterior panels, then stability is enhanced and mortar buildup is prevented, but device complexity increases
Solution Approach 1:
The patent divides the vent into distinct functional segments: a stable boxed frame structure, a separate sliding shutter assembly, and individual rounded corner protectors. This segmentation allows each component to be optimized independently - the frame provides stability through its boxed construction, while the shutter provides airflow control. The segmented design actually reduces overall complexity by allowing modular assembly and independent optimization of each component.
Data Source
AI summary
A foundation vent includes four panels arranged to form a box-shaped vent frame. Ten frame vanes are attached to the box-shaped frame. A vent shutter having ten shutter vanes with elongated oval-shaped finger grips positioned centrally on the shutter vanes is held in a slider channel positioned on the box-shaped vent frame. The slider channel is formed by a series of six tabs centrally positioned in an opening between two adjacent frame vanes. The vent shutter is held in the slider channel so that it slides with respect to the box-shaped vent frame to selectively expose openings in between the frame vanes. A locking mortar track in provided on all four panels of the box-shaped frame to securely hold it in place. The vent is preferably constructed from polypropylene copolymer that is talc reinforced and sized to evenly course with a standard size brick.