Rescue Strap Cam Buckle Adjustment for Firefighter Transport
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Solution Overview
Problem
Existing fire rescue straps are cumbersome, lack versatility, and have complex attachment mechanisms, making them inefficient and difficult to use in emergency situations, particularly in adapting to different body sizes and rescue conditions.
Innovation Solution
A fire rescue strap with user-friendly handles, carabiners, a cam buckle, and an O-Ring pull-ring for secure attachment, adjustable length, and easy connection/disconnection, enhancing adaptability and efficiency during rescue operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intricate configurations and complex attachment mechanisms are used in existing rescue straps, then the attachment strength and security are improved, but the ease of operation and deployment speed deteriorate
Solution Approach 1:
The rescue strap is divided into distinct functional segments: a strap body, separate carabiner attachments, and an independent cam buckle system. This segmentation allows each component to be optimized independently - the carabiners provide secure mechanical attachment while the cam buckle enables rapid adjustment, resolving the contradiction between security and ease of operation
Solution Approach 2:
The cam buckle mechanism is designed to be self-adjusting and self-locking. The user simply pulls the free end of the strap through the cam buckle to tighten or loosen it, and the cam action automatically locks in place without requiring complex tools or procedures. This self-service mechanism dramatically simplifies operation while maintaining secure attachment
2Ease of manufacture
If fixed-length straps are used, then the manufacturing simplicity is improved, but the adaptability to different body sizes and rescue conditions deteriorates
Solution Approach 1:
The strap transitions from a fixed-length design to a dynamically adjustable length through the cam buckle mechanism. The strap can be quickly extended or shortened by pulling or releasing the cam buckle, allowing the same strap to adapt to various body sizes and rescue scenarios without requiring multiple different strap lengths, thus maintaining manufacturing simplicity while achieving versatility
Solution Approach 2:
The adjustable cam buckle allows continuous change of the effective strap length parameter. By rotating the cam, the strap length can be precisely adjusted to accommodate different thigh circumferences, body sizes, and rescue requirements, transforming a static parameter into a dynamic one that adapts to various conditions
3Adaptability or versatility
If multiple attachment points and adjustment mechanisms are added, then the versatility for different rescue scenarios is improved, but the device complexity increases
Solution Approach 1:
The rescue strap is designed with universal applicability through standardized carabiner attachments that can connect to various rescue systems and equipment. The same basic strap design with cam buckle adjustment serves multiple functions - thigh stabilization, leg lifting, and positioning - across different rescue scenarios without requiring complex specialized mechanisms for each application
Solution Approach 2:
Complex adjustment mechanisms are extracted and replaced with a simple cam buckle system. Rather than incorporating multiple pulleys, ropes, and locking mechanisms, the invention extracts only the essential adjustment function and implements it through a single, simple cam buckle that provides both adjustment and locking in one component, reducing overall device complexity while maintaining versatility
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 strap simplifies rescue operations by providing quick and secure attachment, adaptable to various body sizes and conditions, reducing operational time and improving safety and effectiveness in emergency scenarios.
Implementation Method 1
The strap also features a cam buckle, allowing for easy adjustment of its length
Data Source
AI summary
A rescue strap composed of an elongated strap wherein the distal ends of said strap, each include a handle. The elongated strap may be composed of two separate straps wherein each strap is adjustably coupled via a cam buckle that provides a user to adjust the length of the elongated strap. To aid in the process of adjusting the length, the rescue strap further includes a pull ring for users to easily grab the end of the strap. Additionally, the rescue strap includes a plurality of carabiners to attach the rescue strap to the SCBA shoulder straps of a downed firefighter, thus enabling the user to easily transport the downed firefighter, without risk of the downed firefighter disengaging with the rescue strap.