Convertible Field Transport System with Rapid Zipper Mechanism
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Solution Overview
Problem
Existing convertible gear bags are complex, costly, and time-consuming to convert between carrying gear and serving as a litter for injured personnel or bulky loads, necessitating a simpler, more economical solution that is quick to convert and reassemble.
Innovation Solution
A lightweight field transport system constructed from rip-stop nylon with a reinforced frame, flexible ribs, corner handles with pole pockets, and a novel zipper arrangement with hook-and-loop fasteners for rapid conversion between gear bag and litter configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing convertible gear bags are constructed with complex structures to enable conversion between gear bag and litter modes, then adaptability is improved, but device complexity and conversion time increase
Solution Approach 1:
The patent implements a single bag structure that serves multiple functions: it can be used as a gear bag for carrying equipment and as a litter for transporting injured personnel. The frame structure is designed to be collapsible and reconfigurable, allowing the same physical object to fulfill different roles without requiring separate items for each function.
Solution Approach 2:
The bag is divided into functional segments including a collapsible frame structure, removable corner handles, and separable fabric panels. This segmentation allows the structure to be disassembled and reconfigured quickly between gear bag and litter modes, reducing conversion time while maintaining structural integrity when needed.
2Adaptability or versatility
If existing convertible gear bags use complex construction methods to achieve conversion capability, then adaptability is improved, but manufacturing cost increases
Solution Approach 1:
The patent employs flexible fabric panels made from lightweight materials that can be easily sewn and assembled. The frame structure uses simple tubular elements that can be manufactured from standard materials. These choices prioritize ease of manufacture and cost-effectiveness while still achieving the required convertibility between gear bag and litter functions.
3Adaptability or versatility
If existing convertible gear bags require multiple conversion steps to change configuration, then adaptability is improved, but conversion time and operational difficulty increase
Solution Approach 1:
The frame structure is pre-configured with attachment points and connection mechanisms that are prepared in advance for quick assembly. Corner handles are pre-positioned on the frame with attachment mechanisms that allow rapid securing or removal. This preliminary preparation enables users to convert between gear bag and litter modes with minimal steps and effort.
Solution Approach 2:
The patent incorporates dynamic, movable components including a collapsible frame that can be easily expanded or folded, and corner handles that can be quickly attached or removed from the frame. These dynamic elements allow the structure to transition smoothly between different configurations, making the conversion process simple and intuitive for the user.
Data Source
AI summary
The present invention comprises a field transport system that converts readily from a litter or stretcher to a gear bag for carrying loose items. The invention includes a base layer strengthened and supported by a frame that permits the use of litter poles. The invention also includes a novel zipper arrangement whereby the litter can be quickly folded and zipped into a bag having a drawstring closure at a top end thereof.