Hinge-Mountable Handle Assembly for Ergonomic Door Lifting

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Solution Overview

Problem

Manual handling of door and window assemblies is challenging due to their size, weight, irregular shape, and lack of grip points, leading to ergonomic issues, increased risk of damage, and workplace injuries, with existing handling aids often being unsuitable for tight spaces or uneven terrain.

Innovation Solution

A handle assembly that mounts to a door or window hinge, featuring grip portions and hinge-receiving cavities, allowing secure attachment and ergonomic lifting by grasping the grip portions, with adjustable and pivotable body portions for stability and ease of use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual handling of door assemblies is performed, then workers can move door assemblies in various settings, but significant ergonomic challenges and physical strain occur due to size, weight, and lack of grip points

Engineering Contradiction:

Improvemanual handlingVSAvoidergonomic challenges

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The handle assembly serves as an intermediary tool between the worker and the door assembly. It provides a dedicated gripping interface that mediates the interaction, allowing workers to safely handle the heavy door without direct contact with its delicate surfaces or requiring awkward postures.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The handle assembly is segmented into distinct functional components: hinge-receiving cavities for attachment, grip portions for hand placement, and body portions for structural support. This segmentation allows each component to be optimized for its specific function while collectively solving the ergonomic challenges of door handling.

Inventive Principle:

Principle #1Segmentation

2Force

If general-purpose material handling aids such as hand trucks and dollies are used, then lifting capability is provided, but they are often too large or rigid to be used effectively in tight spaces or on irregular terrain

Engineering Contradiction:

Improvelifting capabilityVSAvoidadaptability to tight spaces

Core Design Contradiction:

ForceVSAdaptability or versatility

Solution Approach 1:

The handle assembly incorporates movable and adjustable components, including pivotable body portions and flexible mounting mechanisms. These dynamic elements allow the handle to adapt its configuration to tight spaces and irregular terrain while maintaining sufficient lifting capability through mechanical advantage.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The handle assembly applies local quality by concentrating lifting force at specific attachment points (hinge-receiving cavities) while maintaining flexibility and adaptability in other areas. The grip portions and body portions are designed with localized properties that enable safe handling in constrained environments.

Inventive Principle:

Principle #3Local quality

3Productivity

If door assemblies are carried through narrow hallways and up stairs, then transport is required, but the risk of dropping or damaging the door increases due to limited access and uneven ground

Engineering Contradiction:

Improvetransport efficiencyVSAvoidrisk of damage

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The handle assembly acts as a protective intermediary that distributes the weight of the door assembly and provides stable grip points. This reduces the risk of dropping or damaging the door during transport through narrow hallways and up stairs, while maintaining transport efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The handle assembly is designed with built-in stability features and secure attachment mechanisms that prevent sudden shifts or drops during transport. The hinge-receiving cavities and grip portions are positioned to provide beforehand cushioning against the risks of uneven ground and limited access.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Ease of operation

If irregular weight distribution in door assemblies is present, then lifting becomes difficult and imbalance occurs, but workers may resort to makeshift methods that are unsafe or unreliable

Engineering Contradiction:

Improvelifting easeVSAvoidsafety of lifting method

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The handle assembly counteracts the irregular weight distribution of the door assembly by providing balanced grip points and stable attachment to the hinges. The body portions and grip portions are configured to distribute lifting forces evenly, eliminating the need for unsafe makeshift methods while maintaining lifting ease.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

Data Source

PatentUS12577051B1Hinge-mountable handle assembly

Publication Date: 2026.03.17 VINCIGUERRA MARK T

AI summary

A handle assembly, mountable to a door assembly or another structure to facilitate carrying the structure, includes a main body having one or more grip portions and one or more hinge-receiving cavities. Each hinge-receiving cavity is elongately formed and configured to receive and retain a hinge barrel portion of a hinge of the structure. The handle assembly may adopt a working configuration in which the main body is mounted to the hinge of the structure by the hinge barrel portion being received and retained within a hinge-receiving cavity, and in which a grip portion is arranged outside and spaced apart from the structure allowing a hand of a user to grasp the grip portion and manually lift the structure via the handle assembly.