Aircraft Wheel Hub Protector With Internal T-Bar Guide

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Solution Overview

Problem

Existing aircraft wheel protectors do not adequately protect the internal components, such as wheel bearings, from damage during shipping and installation, as they do not have features to prevent misalignment and dislodgment of unretained bearings, and the T-bar can cause scratches and grease transfer during installation.

Innovation Solution

The design incorporates internal protective protrusions that guide the T-bar during installation, preventing it from contacting the wheel bearings and ensuring proper alignment, thus protecting the internal surfaces and preventing dislodgment of unretained bearings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the T-bar is used to tie both halves of the cover together, then the cover is secured in place, but the metal T-bar contacts the internal metal surfaces of the aircraft wheel causing nicks or scratches and transferring grease

Engineering Contradiction:
Improvecover securingVSAvoidsurface damage and grease transfer
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary component (protective cover extension or guide feature) between the T-bar and the wheel's internal surfaces. This intermediary prevents direct contact between the metal T-bar and the wheel bearing surfaces, eliminating the harmful effects of nicks, scratches, and grease transfer while still allowing the T-bar to perform its securing function

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies preliminary protective measures by designing the cover to extend or feature guide elements before the T-bar installation process begins. This preliminary configuration prevents the T-bar from contacting sensitive surfaces during the securing operation, addressing the potential damage before it can occur

Inventive Principle:
Principle #9Preliminary anti-action

2Object-affected harmful factors

If the protective cover extends over internal and external surfaces, then external protection is provided, but the internal components are not directly protected from the T-bar

Engineering Contradiction:
Improveexternal surface protectionVSAvoidinternal component protection
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent extends the protective cover into the internal dimension of the wheel assembly, specifically adding features that protrude inward toward the bearing surfaces. This dimensional extension allows the cover to provide direct protection to internal components from the T-bar, complementing the existing external surface protection

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If unretained bearings rely on proper wheel installation, then bearing retention is achieved, but misalignment or dislodgment can occur during cover installation

Engineering Contradiction:
Improvebearing retention mechanismVSAvoidbearing position stability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent incorporates guide features or alignment elements in advance of the T-bar installation process. These preliminary guide features ensure that the T-bar is properly aligned before contact with the bearings occurs, preventing misalignment and dislodgment of unretained bearings during the cover installation process

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12162310B2Aircraft wheel and bearing protectors with integrated internal protection protrusion and fastening member guide and method of using same
Publication Date: 2024.12.10 BILL THOMAS ASSOCIATES INC
  • US12162310B2 patent drawing
  • US12162310B2 patent drawing
  • US12162310B2 patent drawing

AI summary

An aircraft wheel hub protector is adapted to engage an aircraft wheel including an aircraft tire on a rim. The aircraft wheel hub protector having two or more cover sections with a protective protrusion and coupling mechanism guide extending from the a first cover section and passing through a bearing race and internal surface within a hub of the rim of the aircraft wheel in such a fashion so as to provide a void within the protective protrusion. The second cover section is engaged with an opposed side of the aircraft wheel from the first cover section. A coupling mechanism passes through the void in the protective protrusion without having contact with the bearing race and internal surfaces within the hub of the rim and coupling the first cover section and securing the aircraft wheel hub protector to the aircraft wheel.