Detachable Protective Earflap Unit for Helmet Storage
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Solution Overview
Problem
Firefighters face challenges in accessing and securely storing small personal items like eyewear and utility bags while wearing helmets, as existing designs require fumbling with internal pockets of their turnout coats or protective clothing.
Innovation Solution
A detachable protective earflap unit with a utility strap securement assembly is integrated into the helmet, allowing for convenient and immediate access to store items at the rear and below the rear brim, utilizing heat-resistant and flame-resistant materials like Nomex® and PBI/Kevlar®, with hook and loop closures or elastic bands for securement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If firefighters store personal items in internal pockets of turnout coats or protective clothing, then items are stored within the protective gear, but access to items requires fumbling and searching through clothing pockets which delays retrieval
Solution Approach 1:
The invention moves the storage location from the internal pockets of protective clothing (one dimension) to the external surface of the helmet earflap (another dimension). This external positioning on the helmet allows firefighters to access items by simply reaching to the side of their head, eliminating the need to search through multiple layers of protective clothing and significantly reducing retrieval time.
Solution Approach 2:
The utility strap securement assembly acts as an intermediary mechanism between the firefighter and personal items. The strap system with attachment points provides a dedicated interface for securing and quickly releasing items like eyewear, allowing firefighters to grab or release items with a simple motion without fumbling through clothing pockets.
2Ease of operation
If a detachable earflap unit with utility strap securement assembly is added to the helmet, then convenient and immediate access to personal items is achieved, but the helmet structure becomes more complex
Solution Approach 1:
The invention segments the helmet system by making the earflap unit detachable rather than permanently integrated. This allows the utility strap securement assembly to be added only when needed and removed when not required, maintaining the simplicity of the basic helmet structure while providing enhanced functionality when the earflap is attached.
Solution Approach 2:
The earflap unit serves multiple functions: it provides ear protection, attaches to the helmet, and incorporates a utility strap securement system for personal items. By combining these functions into a single detachable component, the invention avoids adding separate complex systems for each function while achieving convenience for item storage and retrieval.
3Reliability
If heat-resistant and flame-resistant materials are used for the earflap unit, then safety and fire protection are ensured, but the manufacturing cost and material selection complexity increase
Solution Approach 1:
The invention specifies particular material parameters (heat resistance and flame resistance) for the earflap unit without overly restricting the specific material composition. This allows manufacturers to work with established heat-resistant materials like Nomex or other flame-resistant fabrics that meet the required thermal performance parameters, balancing safety requirements with manufacturing feasibility.
Data Source
AI summary
During use of a firefighter helmet or a similar helmet, a detachable protective earflap unit can be used to provide convenient and easy storage of personal items for the firefighter or other helmet wearer secured at the back of the helmet and below the rear brim or rear lower edge of the helmet by a utility strap securement assembly. The protective earflap unit comprises an earflap having a utility strap securement assembly that selectively may encircle and retain eyewear, an eyewear case, a utility bag, or other small personal item.