Deck Safety Barrier With High-Tensile Mesh and Spline Retention
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Solution Overview
Problem
Existing deck and porch guardrail infill solutions, such as pickets, obstruct views and are inconvenient to maintain, while mesh screening is inadequate for preventing falls due to potential tearing or disengagement under lateral impact.
Innovation Solution
A safety barrier using high-tensile strength mesh screening, such as nylon, securely attached to framing with flat splines and a metal plate washer system, which resists lateral forces without the need for pickets, allowing for aesthetic treatments of the infill area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pickets are used to prevent falls from the deck, then safety is improved, but view obstruction and maintenance inconvenience increase
Solution Approach 1:
The patent replaces rigid pickets with a flexible mesh screen that provides fall protection while maintaining visual transparency. The mesh screen is secured to the guardrail framing and extends downward to prevent falls, yet allows views through the infill area without the obstructions caused by solid pickets.
Solution Approach 2:
The mesh screen creates a porous barrier that prevents falls while allowing visual penetration. The open structure of the mesh provides safety coverage without the solid obstruction of pickets, enabling both safety and aesthetic requirements to be met simultaneously.
2Ease of operation
If mesh screening is used instead of pickets, then view obstruction is reduced, but safety reliability decreases due to potential tearing or disengagement
Solution Approach 1:
The patent changes the material parameter of the mesh from conventional fiberglass to high-tensile strength nylon or polyester. This parameter change increases the tensile strength and durability of the mesh, preventing tearing and disengagement under lateral impact while maintaining the view clarity benefits of mesh over pickets.
Solution Approach 2:
The patent employs a composite construction combining the mesh screen with a specialized base structure that has a splined groove and overhang. This composite design integrates the tensile strength material with a mechanical retention system that prevents disengagement, providing both safety and aesthetic advantages.
3Shape
If conventional mesh screening is used, then aesthetic appearance is improved, but resistance to lateral impact decreases
Solution Approach 1:
The patent changes the material parameters of the mesh from conventional fiberglass to high-tensile strength nylon or polyester, increasing the strength-to-weight ratio. This allows the mesh to maintain its aesthetic appearance while providing superior resistance to lateral impact forces.
Solution Approach 2:
The patent adds a dimensional component by creating a base structure with a splined groove and overhang that extends beyond the mesh attachment plane. This additional dimension provides mechanical retention and distributes lateral impact forces, enhancing strength without compromising the aesthetic appearance of the mesh screen.
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 solution effectively prevents falls by withstanding lateral forces and meeting code requirements without obstructing views or requiring pickets, enabling a safer and more visually appealing deck or porch design.
Implementation Method 1
The material is selected to have a greater tensile strength than conventional screening material
Implementation Method 2
the spline groove is larger in its interior than at its entrance. There is thus an overhang at the entrance and the entrance is just large enough for the edge of the spline groove to be inserted and then rotate so that it is pressed against the overhang
Data Source
AI summary
A safety barrier is formed of framing, including a guard rail that defines the infill below the rail without the use of pickets. The infill is covered with mesh screen, which may be made of nylon which has greater tensile strength than conventional fiberglass. The mesh screen is held to the framing by an extruded base. The base has a central channel between two flat spline grooves. Flat splines hold mesh screen in their respective grooves more securely than conventional friction-based channel splines. A metal plate is positioned in the central channel to enables screws that secure the base to be tightened to hold it to the framing better. The elimination of pickets in the infill leaves the view unobstructed and allows other treatments of that portion of a deck or porch that are more aesthetically pleasing without compromising safety.