Solid Vacuum Wheel Tire Assembly Adheres Rim

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Solution Overview

Problem

Conventional pneumatic tires are prone to flat tires and blowouts, require constant air pressure maintenance, and can be heavy and inefficient, while solid tires are large and rigid, limiting high-speed operation and load-bearing capacity.

Innovation Solution

A solid vacuum wheel and tire assembly with a vacuum seal that adheres the tire directly to the wheel rim, eliminating the possibility of flat tires or blowouts, reducing weight and maintenance needs, and maintaining constant pressure and rigidity through a flexible core and steel belt, with optional concave tread for increased stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If pneumatic tires are used, then the tire can be inflated to provide cushioning and shock absorption, but the tire is prone to flat tires and blowouts requiring constant maintenance

Engineering Contradiction:
Improvetire reliabilityVSAvoidmaintenance requirement
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent removes the air chamber from the tire structure, extracting the source of potential failure (air that can leak or explode) while retaining the essential function of the tire. The solid vacuum tire eliminates the pneumatic cavity that causes flat tires and blowouts, replacing it with a vacuum-sealed solid structure that cannot suffer from air pressure-related failures.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the pressure parameter from positive (inflated air pressure) to negative (vacuum pressure). By creating a vacuum environment inside the tire instead of filling it with air, the system achieves a state where the tire cannot go flat or blow out, fundamentally altering the pressure state to eliminate maintenance issues.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If solid tires are used, then the tire cannot go flat or blow out, but the tire becomes large, rigid and heavy limiting high-speed operation

Engineering Contradiction:
Improvetire reliabilityVSAvoidtire weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The patent employs a flexible outer shell that maintains the tire's structural integrity while allowing for lightweight construction. The solid vacuum tire uses a thin-walled flexible structure that can deform elastically under load without requiring heavy reinforcement, enabling high-speed operation while maintaining reliability.

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent utilizes composite material construction combining lightweight materials with high strength-to-weight ratio. The solid vacuum tire incorporates composite structures that provide necessary rigidity and strength without excessive weight, allowing the tire to be both reliable and suitable for high-speed applications.

Inventive Principle:
Principle #40Composite materials

3Reliability

If solid tires are used, then the tire cannot go flat, but the tire becomes large and rigid requiring attachment to wheel frame

Engineering Contradiction:
Improvetire reliabilityVSAvoidattachment requirement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent inverts the conventional approach by using vacuum pressure instead of mechanical attachment or air pressure to secure the tire to the wheel rim. Instead of attaching the tire to prevent it from moving, the vacuum pressure holds the tire in place through pressure differential, simplifying the attachment mechanism.

Inventive Principle:
Principle #13The other way round (Inversion)

4Ease of operation

If pneumatic tires are used, then the tire can provide cushioning, but the tire requires constant air pressure maintenance and fuel efficiency is reduced

Engineering Contradiction:
Improvecushioning capabilityVSAvoidfuel efficiency
Core Design Contradiction:
Ease of operationVSUse of energy by moving object

Solution Approach 1:

The patent changes the internal pressure parameter from positive (air-filled) to negative (vacuum), eliminating the need for continuous air pressure maintenance. The vacuum-sealed structure maintains its cushioning properties without requiring periodic inflation or pressure checks, improving fuel efficiency by eliminating the energy losses associated with maintaining pneumatic pressure.

Inventive Principle:
Principle #35Parameter changes

5Ease of operation

If pneumatic tires are used, then the tire can be inflated to operate, but moisture inside causes corrosion over time

Engineering Contradiction:
Improveoperational capabilityVSAvoidcorrosion
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent creates a vacuum environment inside the tire, which is inherently free from moisture and corrosive elements. By removing the atmosphere entirely (creating vacuum), the system eliminates the source of corrosion that plagues pneumatic tires, as there is no air or moisture present to cause rust or degradation of metal components.

Inventive Principle:
Principle #39Inert atmosphere (Inert environment)

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 solid vacuum tire assembly provides a safer, more efficient, and reliable operation with increased load-bearing capacity, improved fuel efficiency, and reduced risk of corrosion and thermal expansion, while eliminating the need for spare tires and maintenance checks.

Implementation Method 1

The present invention incorporates a solid vacuum wheel and tire assembly that can overcome the disadvantages in conventional pneumatic tires while retaining the advantages of solid tires. The solid vacuum wheel and tire assembly is the first of its kind to incorporate a vacuum seal to adhere the tire directly against the wheel rim

Methodology Applied
Scientific EffectVacuum seal: Vacuum

Implementation Method 2

With a vacuum applied to the wheel, the tire core contracts and adheres directly onto the wheel assembly rim for operation by filling a concave void between the wheel and the rim that is present before a vacuum is applied

Methodology Applied
Scientific EffectVacuum: Vacuum

Data Source

PatentUS8978723B2Solid vacuum wheel and tire assembly
Publication Date: 2015.03.17 MCCULLEY MICHAEL MARION
  • US8978723B2 patent drawing
  • US8978723B2 patent drawing
  • US8978723B2 patent drawing

AI summary

A solid vacuum wheel and tire assembly incorporating a vacuum to adhere a solid tire in place against a wheel rim, allowing for safe and reliable operation. The assembly incorporates a flexible solid tire core which contracts into place after a vacuum is applied, contracting and adhering directly onto the wheel rim and filling a void between the rim and tire, having no air pressure to go flat or release if punctured. Vacuum channels installed along the wheel rim direct a vacuum seal to the tire core. A vacuum valve is installed into a vacuum chamber, which acts as a conduit to direct the vacuum throughout the assembly. The solid tire incorporates a possible concave shaped tire tread configuration, tire tread rubber and a steel belt. The solid tire core material comprising of solid or porous rubber, jell or a combination of each provides a solid flexible non-pneumatic core structure.