Axle-Mounted Chalk Holder for Tool-Free Bicycle Setup

Solution Overview

Problem

Many children and adults in the U.S. fail to meet physical activity guidelines, leading to obesity and related health issues, as existing outdoor activities are often boring or require lengthy setup times with tools.

Innovation Solution

A chalk holding device for bicycles, scooters, and skateboards that securely attaches chalk, allowing for easy setup and use without tools, enabling users to draw trails and track exercise progress, thereby enhancing engagement and duration of outdoor activities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional outdoor activities are used, then physical exercise can be achieved, but the activities are boring and require lengthy setup times with tools

Engineering Contradiction:
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The invention extracts the chalk holder from the bicycle structure and attaches it to the axle, eliminating the need for separate tools and reducing setup complexity. The chalk holder is a standalone component that can be easily attached and removed without requiring additional tools or complex assembly procedures.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The chalk holder is divided into separate components including the holder body, axle attachment mechanism, and chalk storage section. This segmentation allows for easy assembly and disassembly without tools, enabling quick setup and teardown while maintaining structural integrity during use.

Inventive Principle:
Principle #1Segmentation

2Reliability

If chalk is held securely during exercise, then tracking accuracy is improved, but the device may become more complex requiring tools for attachment

Engineering Contradiction:
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The chalk holder is merged with the axle attachment mechanism into a single integrated component. This combination ensures secure chalk holding while eliminating the need for separate attachment tools, as the same axle mechanism that secures the wheel also secures the chalk holder.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The axle attachment mechanism serves dual purposes: it secures the wheel to the bicycle and simultaneously attaches the chalk holder. This self-service approach allows the same structural element to perform multiple functions without requiring additional tools or complex assembly procedures.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS8684243B1Chalk holding devices for bicycles, scooters and skateboards
Publication Date: 2014.04.01
  • US8684243B1 patent drawing
  • US8684243B1 patent drawing
  • US8684243B1 patent drawing

AI summary

Chalk holding devices for bicycles, scooters, skateboards and other wheeled apparatuses are provided. One exemplary embodiment includes a chalk holding device for attachment to a bicycle having a wheel and an axle with a first end and a second end. The chalk holding device has a chalk-receiving member for receiving chalk therein. The chalk holding devices also has first and second arms that extend from the chalk-receiving member towards the axle. The first arm has a first axle cup for receiving a first end of the axle and the second arm has a second axle cup for receiving a second end of the axle.