Creeper Wheel Layout for Tight-Space Steering and Stability

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Solution Overview

Problem

Existing creepers lack enhanced mobility, particularly in navigating tight spaces and uneven terrain.

Innovation Solution

A creeper design featuring larger non-swivel wheels in the upper-middle section and a smaller swivel caster in the lower section, allowing for pivoting and steering in tight spaces and traversing uneven terrain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a creeper uses only fixed wheels for movement, then it provides stability, but it cannot pivot or steer effectively in tight spaces

Engineering Contradiction:

Improvemobility in tight spacesVSAvoidwheel assembly complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The wheel assembly is segmented into two distinct types: non-swivel wheels for stability and swivel caster wheels for pivoting. This segmentation allows each wheel type to perform its specialized function, enabling the creeper to navigate tight spaces while maintaining overall stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The creeper transitions from a static wheel arrangement to a dynamic one by incorporating swivel caster wheels that can rotate independently. This dynamic capability allows the creeper to pivot and steer in tight spaces while the non-swivel wheels maintain structural stability.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If a creeper uses only caster wheels for movement, then it can pivot and steer easily, but it becomes unstable over cracks and uneven terrain

Engineering Contradiction:

Improvepivoting and steering capabilityVSAvoidstability over uneven terrain

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The wheel assembly is segmented into non-swivel wheels for stability and swivel caster wheels for pivoting. The non-swivel wheels provide a stable platform over cracks and uneven terrain, while the swivel caster wheels enable easy pivoting and steering when needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the wheel assembly have different properties: non-swivel wheels provide stability and resistance to lateral movement over uneven terrain, while swivel caster wheels provide pivoting capability. Each wheel type is positioned to perform its specific function optimally.

Inventive Principle:

Principle #3Local quality

3Ease of operation

If a creeper uses large diameter wheels, then it moves smoothly over uneven terrain, but it cannot maneuver in tight spaces

Engineering Contradiction:

Improvemaneuverability in tight spacesVSAvoidmovement speed over terrain

Core Design Contradiction:

Ease of operationVSSpeed

Solution Approach 1:

The wheel assembly segments functionality between non-swivel wheels (for terrain movement) and swivel caster wheels (for tight space maneuvering). The non-swivel wheels provide smooth movement over terrain, while the small-diameter caster wheels enable tight space maneuvering due to their smaller turning radius.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The solution moves from a single-dimension wheel size consideration to a multi-dimensional approach involving both wheel diameter and swivel capability. The non-swivel wheels handle terrain traversal while the swivel caster wheels handle directional changes in tight spaces, combining both dimensions of movement capability.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12611763B2Creeper with enhanced mobility

Publication Date: 2026.04.28 WHITESIDE MANUFACTURING CO

AI summary

A creeper provides improved mobility and includes a frame including longitudinally extending side rails and latitudinally extending cross-rails extending between the side rails, the cross-rails supporting a body pad, an upper-middle portion of the side rails including non-swivel wheels, a lower portion of the creeper including a caster assembly, the non-swivel wheels having a diameter at least one-and-a-half times a diameter of a wheel of the caster assembly.