Wheelbarrow Bumper with Side Wheels for Curb Navigation
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Solution Overview
Problem
Existing wheelbarrows often cause damage to surfaces when tilted forward and moved backwards down curbs or stairs, leading to potential damage and safety hazards due to the lack of effective protection and stability during unloading and maneuvering.
Innovation Solution
A wheelbarrow with a bumper or bight featuring wheels located on either side of a weight-bearing wheel, which provides protection by preventing contact with surfaces and enhancing stability through additional gripping features, allowing for efficient unloading and maneuvering without causing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the wheelbarrow is tilted forward and pushed to unload contents, then unloading efficiency is improved, but damage to surfaces or structures occurs
Solution Approach 1:
The patent introduces a front bumper as an intermediary protective element between the wheelbarrow frame and the surface. This bumper absorbs the contact force when the wheelbarrow is tilted forward, preventing direct damage to the wheelbarrow frame and the surface while enabling efficient unloading.
Solution Approach 2:
The front bumper serves as a pre-installed protective cushion that anticipates potential damage during forward tilting operations. By positioning this protective element at the front of the wheelbarrow frame, the design prepares for and mitigates surface contact damage before it occurs to the main structure.
2Ease of operation
If the wheelbarrow is steered backwards down stairs or curbs, then maneuverability is improved, but damage to surfaces and safety hazards occur
Solution Approach 1:
The side bumpers act as intermediary protective elements that contact surfaces first when the wheelbarrow is steered backwards down stairs or curbs. This prevents the main wheelbarrow frame from directly contacting and damaging the surfaces, while still allowing the user to maintain control and maneuverability.
Solution Approach 2:
The side bumpers provide pre-positioned protective cushioning at the vulnerable front corners of the wheelbarrow. This anticipates potential contact when maneuvering backwards down stairs or curbs, absorbing impact forces before they can damage the wheelbarrow frame or cause safety hazards.
3Stability of the object's composition
If the front portion catches on a surface during use, then stability may be improved, but premature dumping and user injury occur
Solution Approach 1:
The bumpers serve as intermediary elements that control and manage contact with surfaces. Instead of the wheelbarrow frame catching unpredictably on surfaces, the bumpers are designed to contact surfaces in a controlled manner, preventing premature dumping and reducing the risk of user injury while maintaining operational stability.
Data Source
AI summary
Embodiments of the invention are designed to be improvements over existing wheelbarrows. Certain embodiments comprise a frame, one or more weight-bearing wheels, and a pan. In certain embodiments, a wheelbarrow comprises a bight or a bumper having wheels. The wheels on the bight or bumper are located to the sides of a weight-bearing wheel. In certain embodiments, wheels located on each side of a bight or bumper portion allow a user to maneuver a wheelbarrow up or down a curb, or navigate stairs without causing damage to surfaces. Certain embodiments of the invention allow more efficient unloading of the contents of a wheelbarrow bed. Certain embodiments are designed to retrofit on existing wheelbarrows.