Conical Glass Breaking Cap for Flashlights and Batons
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Solution Overview
Problem
Law enforcement and emergency personnel face difficulties in breaking glass due to the unwieldiness and inefficiency of existing tools, such as hammers and batons, which require excessive force and are not effective underwater or when minimal movement is needed.
Innovation Solution
A glass breaking cap with a conical top having an included angle of 86° to 136°, preferably 116°, that can be attached to flashlights or batons, allowing for concentrated force application with minimal movement and reduced danger during handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a traditional baton with rounded edges is used to break glass, then the baton is safe to carry and handle, but excessive force and repeated strikes are required to break the glass
Solution Approach 1:
The baton is modified by adding a cap with a conical tip that has different properties than the main body. The tip region has a specific included angle (60-120 degrees) that concentrates force locally at the contact point with glass, while the rest of the baton maintains its original safe handling characteristics. This local modification allows the baton to efficiently break glass without making the entire tool dangerously sharp.
2Productivity
If axes or hammers are used to break glass, then glass can be broken effectively, but the tools are unwieldy and difficult to carry
Solution Approach 1:
The glass breaking capability is merged with the existing baton or flashlight tool that law enforcement personnel already carry. Instead of using a separate axe or hammer, the glass breaking function is integrated into the familiar tool through the attached cap, combining the portability advantages of the baton/flashlight with the glass breaking effectiveness of a concentrated impact tool.
Solution Approach 2:
The glass breaking function is segmented as a separate cap component that can be attached to or removed from the main tool. This segmentation allows the tool to maintain its original portability and handling characteristics while adding the glass breaking capability only when needed, rather than requiring the entire tool to be redesigned as a heavy axe or hammer.
3Ease of operation
If a very sharp point is used on the baton to break glass easily, then glass can be broken with minimal force, but the baton becomes dangerous to carry and requires additional diligence
Solution Approach 1:
The included angle of the conical tip is optimized within a specific range (60-120 degrees) to balance glass breaking efficiency with safety. This parameter optimization ensures the tip is sharp enough to concentrate force effectively on glass while maintaining an obtuse enough angle to prevent the tip from being excessively sharp and dangerous during ordinary handling. The specific angle range represents the optimal compromise between these two conflicting requirements.
4Productivity
If a baton is swung in an arc to break windows, then glass can be broken, but law enforcement personnel become vulnerable to attack
Solution Approach 1:
The glass breaking function is extracted as a separate cap component that can be attached to the baton, allowing the officer to use a pushing or stabbing motion rather than a swinging arc. This extraction enables the use of minimal movement and direct linear force application, improving officer safety by eliminating the vulnerability associated with wide swinging motions while maintaining glass breaking effectiveness through the concentrated tip geometry.
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 easy and efficient glass breaking with minimal force, suitable for use on vehicles and underwater scenarios, while being safe for handling and non-lethal when used against individuals.
Implementation Method 1
the conical top is sufficiently sharp as to concentrate force when a user directs the conical top against glass for breakage
Data Source
AI summary
A glass breaking cap for flashlights, batons and the like is provided. The glass breaking cap has a cylindrical sidewall and a conical top portion. The conical top portion has an apex having an included angle between 86° and 136°. More preferably, the apex has an included angle of 106° to 126° with a preferred included angle of about 116°. Preferably, the glass breaking cap has male or female threads for replacing threaded end caps found on traditional flashlights and batons.