Beach wagon

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Solution Overview

Problem

Visiting the beach presents challenges such as carrying multiple items, finding a clean spot to sit, and obtaining shade on sunny days.

Innovation Solution

A multifunctional beach wagon that can transform into a chair, equipped with a foldable frame, wide sand tires, modular wheels, and an umbrella attachment, providing a beach chair and umbrella combo, along with features like cup holders and easy storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple separate beach items (wagon, chair, umbrella) are carried, then functionality is sufficient, but portability and convenience deteriorate

Engineering Contradiction:
ImprovefunctionalityVSAvoidportability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent combines a wagon, beach chair, and umbrella into a single integrated structure. The frame serves dual purposes as both wagon support and chair support, while the umbrella attachment provides shade functionality. This merging eliminates the need to transport multiple separate items while maintaining all desired beach functionalities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The beach wagon is designed with universal functionality to serve multiple purposes: it can function as a cargo wagon for carrying beach items, transform into a beach chair for seating, and provide umbrella attachment for shade. This multi-functionality resolves the contradiction by providing diverse beach needs through a single portable unit.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If a foldable frame is used for easy storage, then storage convenience is improved, but structural stability may deteriorate

Engineering Contradiction:
Improvestorage convenienceVSAvoidstructural stability
Core Design Contradiction:
Ease of operationVSStability of the object's composition

Solution Approach 1:

The frame is designed with dynamic characteristics, allowing it to be folded for compact storage and extended for stable use. The foldable joints and extendable components enable the structure to adapt between a compact folded state for storage and a stable expanded state for carrying or sitting, resolving the contradiction between storage convenience and structural stability.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If wide sand tires are added for beach terrain capability, then mobility on sand is improved, but device complexity increases

Engineering Contradiction:
Improvemobility on sandVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The wagon is equipped with wide sand tires specifically at the contact points with the beach terrain, providing enhanced mobility on sand without requiring the entire structure to be complex. The wide tires are strategically placed only where needed for terrain interaction, maintaining simplicity in other parts of the device while achieving improved sand mobility.

Inventive Principle:
Principle #3Local quality

Data Source

PatentEP4031436B1Beach wagon
Publication Date: 2025.07.02 KELLY PHILLIP EARL
  • EP4031436B1 patent drawingFigure 1
  • EP4031436B1 patent drawingFigure 2
  • EP4031436B1 patent drawingFigure 3

AI summary

An objective of the beach wagon is to provide users with a 3-in-1 outdoor accessory. In order to accomplish this, the beach wagon provides a multifunctional structure which can be utilized as a normal wagon as well as a beach chair. The beach umbrella configuration of the beach wagon further enables the attachment of an umbrella to provide a beach chair and umbrella combo. The structure of the beach wagon provides a foldable frame which can be configured into a wagon configuration or a chair configuration. Further, the foldable frame of the beach wagon enables easy and compact storage in the back of a vehicle. Additionally, the beach wagon is equipped with wide sand tires, and accommodates various secondary attachments such as cup holders, coolers etc. Furthermore, a modular wheel system of the beach wagon allows users to use different size and type of wheels.