Pivoting Door-Opening Shaft for Silent Panic-Bar Access
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Solution Overview
Problem
Existing devices for opening doors with panic bars from the outside are time-consuming, noisy, and require precise manipulation, often failing due to space restrictions or needing additional tools, which can alert intruders and hinder emergency access.
Innovation Solution
A door-opening device with a stiff, elongated shaft that selectively bends to a 90-degree angle, featuring a spring-loaded mechanism to easily insert through door apertures and actuate panic hardware silently, accompanied by a kit including a step drill bit for precise hole drilling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a J-hook shaped device is used to actuate panic hardware, then the door can be opened from the outside, but the manipulation time increases and the device becomes harder to insert
Solution Approach 1:
The device is divided into two functional sections: a straight rod portion for insertion through door apertures and a bent portion for actuating the panic hardware. This segmentation allows each part to be optimized for its specific function, reducing overall manipulation time while maintaining door opening capability.
Solution Approach 2:
The device transitions from a static J-hook shape to a dynamic configuration where the bent portion can be selectively deployed. The straight rod remains rigid for insertion, while the bent portion flexes or extends only when needed to contact the panic hardware, reducing insertion difficulty and manipulation time.
2Productivity
If brute-force forced-entry devices are used, then the door can be opened quickly, but noise is produced that alerts the intruder
Solution Approach 1:
The device uses the existing panic hardware mechanism as an intermediary to open the door. By actuating the panic bar through the aperture, the device leverages the door's own locking mechanism rather than forcing entry, achieving quick opening without the noise associated with brute-force methods.
3Adaptability or versatility
If devices are slid underneath the door, then the door can be opened, but the device is restricted by space between door bottom and ground
Solution Approach 1:
Instead of approaching the door from below by sliding devices underneath, the invention approaches from the opposite direction—through the apertures in the door. This inverted approach eliminates constraints related to ground clearance and allows the device to access the panic hardware directly through the door's existing openings.
4Ease of operation
If a straight rod is used for insertion, then insertion is easier, but the device cannot contact the panic hardware effectively
Solution Approach 1:
The device is segmented into a straight rod portion optimized for easy insertion through apertures and a separate bent portion optimized for contacting and actuating the panic hardware. This segmentation resolves the contradiction by allowing each segment to excel at its specific function.
Solution Approach 2:
The bent portion acts as an intermediary element that transfers the insertion motion through the straight rod to the panic hardware. It converts the linear insertion motion into the appropriate mechanical action needed to release the panic bar mechanism.
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
Enables quick, silent, and efficient breach of locked doors with panic bars, minimizing damage and ensuring rapid emergency access without alerting intruders, while allowing easy repair and compliance with ADA codes.
Implementation Method 1
featuring a spring-loaded mechanism to easily insert through door apertures and actuate panic hardware silently
Data Source
AI summary
A door-opening device for use when breeching public doors with interior panic bars during an emergency, the device comprising an elongated pivotable shaft having a handle with a trigger disposed at a first end and a tip disposed at a second end, the pivotable shaft comprising: a proximal section connected to the handle and having an internal cavity; and, a distal section having the tip, the proximal section hingedly connected to the distal section opposite the handle and the distal section hingedly connected to the proximal section opposite the tip, a plunger arranged within the internal cavity and connected to the trigger, the trigger adapted to selectively translate the plunger within the internal cavity to engage or disengage the distal section to allow the distal section to pivot about the proximal section. A kit comprising the door-opening device and a method of use is also disclosed.