Door Barricade Apparatus for Rapid Entry Resistance
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Solution Overview
Problem
Interior doors in residential and institutional facilities lack adequate security features to prevent entry by active shooters, who can quickly breach doors to cause harm, and existing security measures are often restricted by safety regulations such as fire codes.
Innovation Solution
A door barricade apparatus comprising a security bar and a cover that can be rapidly deployed to block a door from being opened, using frictional engagement and removable pins to prevent the door from being opened, without any permanent attachment to the door or surrounding structure, thereby providing maximum resistance to entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a door is equipped with a simple latch or locking mechanism, then the device complexity is reduced, but the resistance to entry by active shooters is insufficient
Solution Approach 1:
The security system is divided into separate functional components: a door closer for automatic door closure, a cover for protecting and securing the door closer, and a bar for physical blocking. This segmentation allows each component to perform its specific function independently, achieving high resistance to entry without requiring a single complex integrated system.
Solution Approach 2:
The patent combines multiple security functions into a unified barricade system where the cover secures the door closer and the bar blocks the door opening. This merging of functions (automatic closure, mechanical securing, and physical blocking) creates a synergistic effect that provides superior resistance to entry compared to individual components alone.
2Strength
If a door is secured with a lock or barricade, then the resistance to entry is improved, but the time required to secure the door increases
Solution Approach 1:
The door closer is pre-installed on the door, and the cover is designed to quickly secure the door closer in its closed position. The bar can be rapidly deployed to block the door opening. These preliminary preparations and simple mechanisms enable occupants to secure the door within seconds during an emergency, minimizing the time loss while maintaining strong resistance to entry.
3Reliability
If a barricade device is permanently attached to the door, then the reliability of security is improved, but the adaptability to different door types and locations is reduced
Solution Approach 1:
The cover and bar are designed as movable, non-permanent components that can be quickly installed and removed from various door types and locations. The cover can be positioned on different door closers, and the bar can be placed to block various door opening configurations. This dynamic design maintains high reliability during use while providing full adaptability to different deployment scenarios.
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 apparatus effectively prevents unauthorized access by providing maximum resistance to door opening, allowing occupants to safely barricade themselves during events like mass shootings, and can be deployed quickly without requiring substantial skill or permanent installation, adhering to safety regulations.
Implementation Method 1
The cover is placed over the door closer, and can be secured in place with frictional engagement with the sidewalls
Data Source
AI summary
A door security device for preventing opening of a door. A first device includes a bar that seats against a doorframe on opposite sides of the door and a clamp that clasps a door latch and applies a force to draw the bar against the doorframe while pulling the door latch toward the bar. The door cannot be opened away from the bar. A second device has a bar that seats against a doorframe at the floor with a two plates that extend beneath the door and around to opposite sides of the doorframe. Removable pins or other locks obstruct the plates from sliding along the bar. The bar is tall enough that the door cannot pass over the bar, thus obstructing the door from opening inwardly. A closer cover slides over a mechanical door closing mechanism to be used alone or with the other devices.