Safety Harness Handles for Seated Suspension Adjustment

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Solution Overview

Problem

Safety harnesses cause discomfort and potential health issues due to prolonged pressure on the femoral artery when a worker is suspended vertically after a fall, making it difficult to adjust to a seated position to relieve this pressure.

Innovation Solution

Incorporation of handles on safety harness leg straps that allow users to easily adjust from a vertical to a seated position by pulling the leg straps down, using a handle mechanism with attachment elements to facilitate this transition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the worker remains suspended vertically in the safety harness, then the lifeline can maintain continuous support, but the leg straps apply prolonged pressure to the femoral artery causing discomfort and health issues

Engineering Contradiction:

Improvecontinuous supportVSAvoidpressure on femoral artery

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a dynamic adjustment mechanism that allows the leg straps to transition from a fixed vertical position to an adjustable seated position. The handle and attachment elements enable the worker to reposition the leg straps, transforming the static suspension system into a dynamic one that can adapt to different body positions and relieve pressure on the femoral artery while maintaining continuous support.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If the worker adjusts to a seated position to relieve pressure on the femoral artery, then discomfort is reduced, but it becomes difficult to maintain the adjusted position without additional assistance

Engineering Contradiction:

Improvepressure on femoral arteryVSAvoidmaintaining adjusted position

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent designs a self-service adjustment mechanism where the worker can independently reposition the leg straps using the handle and attachment elements. The system enables the worker to adjust the leg straps to a seated position and maintain it without requiring external assistance, making the adjustment process autonomous and easily operable.

Inventive Principle:

Principle #25Self-service

3Device complexity

If traditional leg straps are used without handles, then the harness structure remains simple, but the worker cannot easily adjust the leg straps to change position

Engineering Contradiction:

Improveharness structureVSAvoidadjusting leg straps

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The patent segments the leg strap system by adding separate handle components and attachment elements that can be independently adjusted. This segmentation allows the leg straps to be manipulated and repositioned independently from the main harness structure, providing ease of operation while keeping the overall harness design relatively simple and modular.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20260027392A1Handles for safety harness and safety harness including the same

Publication Date: 2026.01.29 WERNER CO

AI summary

A handle for a safety harness includes a handle portion, a first leg portion extending from a first end of the handle portion, a second leg portion extending from the first end of the handle portion, a first attachment element attached to a portion of the handle portion distal from the first end of the handle portion, and a second attachment element attached to a portion of the first leg portion or the second leg portion distal from the first end of the handle portion, wherein the first attachment element is structured to selectively attach to the second attachment element.