Base Slat Pry Stopper for Rolling Shutter Security

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Solution Overview

Problem

Rolling shutter assemblies are vulnerable to pry bar attacks due to the flexibility of the base slat, which can be pried up, compromising security and allowing ingress through the opening.

Innovation Solution

A base slat locking bracket is mounted to the opening bottom wall, allowing the base slat to move upward and downward past it, engaging the base slat to prevent deflection away from the opening bottom wall when a force is applied, thereby preventing pry bar attacks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the base slat is made flexible to accommodate width variations, then the shutter curtain can cover different opening sizes, but the security is compromised as the flexible base slat can be pried up by a pry bar

Engineering Contradiction:
Improveability to cover different opening sizesVSAvoidsecurity against pry bar attacks
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The base slat is divided into multiple segments or sections that can flex relative to each other, allowing the overall structure to adapt to different opening widths while maintaining rigidity in each segment to resist pry bar attacks. The hinges connecting segments provide controlled flexibility without compromising security.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The base slat is pre-configured with expansion joints or telescoping sections that can extend or retract to accommodate different opening sizes before the pry bar attack occurs. This preliminary adaptability design ensures security is maintained across various configurations.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the base slat is made rigid to prevent prying, then security is improved, but the shutter curtain cannot accommodate variations in opening width

Engineering Contradiction:
Improvesecurity against pry bar attacksVSAvoidability to cover different opening sizes
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The base slat incorporates dynamic elements such as adjustable rigid sections or movable support points that can be repositioned to accommodate different opening widths. Each section remains rigid for security, but the overall configuration can dynamically adapt to various sizes.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the base slat is widened to increase security, then resistance to pry bar attacks improves, but the flexibility and ease of installation are reduced

Engineering Contradiction:
Improvesecurity against pry bar attacksVSAvoidease of installation and flexibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The base slat is segmented into multiple narrower rigid sections connected by flexible joints. Each section maintains sufficient width for security, while the connections provide the necessary flexibility and ease of installation, combining the benefits of both wide and narrow designs.

Inventive Principle:
Principle #1Segmentation

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

Enhances the security of rolling shutter assemblies by preventing upward deflection of the base slat, even when subjected to external forces, thus maintaining the integrity of the shutter curtain and preventing unauthorized access.

Implementation Method 1

the base slat locking bracket receives and engages the base slat to prevent the base slat from deflecting upward away from the opening bottom wall when a force applied from an exterior side of the shutter curtain causes the base slat to deflect toward the interior side of the structure and the shutter curtain

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS11536086B2Base slat pry stopper
Publication Date: 2022.12.27 QUALITAS MFG INC
  • US11536086B2 patent drawing
  • US11536086B2 patent drawing
  • US11536086B2 patent drawing

AI summary

A base slat pry stopper, such as a base slat locking bracket, for locking a rolling shutter curtain covering an opening of a structure is disclosed. The base slat pry stopper may include a bracket base plate mounted to an opening bottom wall on an interior side of the shutter curtain, and a base slat engagement portion extending upward from the bracket base plate and above a top surface of the opening bottom wall. When the shutter curtain is unrolled to cover the opening, the base slat engagement portion engages the base slat to prevent the base slat from deflecting upward away from the opening bottom wall when a force applied from an exterior side of the shutter curtain causes the base slat to deflect toward the interior side of the structure and the shutter curtain. The base slat pry stopper may be permanently or removably installed.