Curving Wedge Breaching Tool for Door Frame Separation
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Solution Overview
Problem
Current breaching tools for forced entry are not efficient or versatile enough for quickly and effectively opening various types of doors, particularly metal and security doors, as they lack features that reduce breaking force and facilitate access to lock cylinders.
Innovation Solution
A breaching tool with a high-strength steel head featuring a curving wedge shape and knurled surfaces for stabilization, combined with a chisel end that doubles as a nail puller, allowing for efficient separation of doors from their frames and quick access, along with a looping handle for enhanced leverage and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If traditional breaching tools are used, then the tool structure is simple, but the breaking force is high and entry is slow
Solution Approach 1:
The tool is divided into distinct functional segments: a head portion for prying and separating door from frame, a shaft for leverage, and a tail end with multiple functions (chisel, nail puller, screw extractor). This segmentation allows each part to optimize its specific function while working together to reduce overall breaking force requirements and increase entry speed.
Solution Approach 2:
The head of the tool features a curved or angled surface that facilitates insertion between the door and frame. This curvature allows the tool to engage with the door edge and apply prying force more effectively, reducing the breaking force needed while maintaining rapid entry capability.
2Adaptability or versatility
If the tool is designed for specific door types, then the tool structure is simple, but the versatility is low
Solution Approach 1:
The tail end of the tool integrates multiple functions into a single component: chisel for scraping, nail puller for removing fasteners, and screw extractor for retrieving screws. This multi-functionality allows the tool to handle various door types (wood, metal, security doors) and different entry scenarios without requiring multiple separate tools, thereby increasing versatility while managing structural complexity.
Solution Approach 2:
Multiple functional elements are merged into the tail end of the tool, combining the chisel, nail puller, and screw extractor into one integrated component. This merging allows the tool to adapt to different door types and entry requirements while maintaining a relatively simple overall structure.
3Force
If the tool head is heavy, then the leverage is high, but the tool weight increases
Solution Approach 1:
The head of the tool is designed with localized quality - it is heavier and more robust in the specific areas that require high leverage (the prying surface and engagement zones), while the rest of the tool remains relatively lightweight. This localized mass distribution provides high prying force where needed without excessively increasing the overall tool weight.
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 tool reduces the breaking force required to open doors by separating them from their frames, allowing for quicker access to lock cylinders and enabling the use of both inward and outward swinging doors, while also providing a versatile feature set for various door types, including metal and security doors.
Implementation Method 1
The front and back sides 21 and 22 of the tool's head are knurled, preferably with parallel grooves as shown, to stabilize the tool as it is being inserted
Implementation Method 2
the head has a specific curving wedge shape, so that when the tool is pressed between a door and frame, the door and frame are pressed apart
Implementation Method 3
a looping bar handle 18 that extends out from the shaft 16 preferably as shown, which can be in a trapezoid configuration with the handle 16
Data Source
AI summary
A breaching tool for use by law enforcement or emergency personnel has a curving, tapered wedge at a first end, extending approximately perpendicularly from a tool handle, and providing a striking surface for driving the wedge between a door and door frame, for example. At an opposite end is a tapered chisel tail end, preferably with a claw for pulling nails or other fasteners. The tool may include a loop handle, generally in a trapezoid configuration connected to the main tool shaft, for manipulating the tool in service.