Modular Metal Wallet Structure for Compact Secure Storage

Solution Overview

Problem

Existing wallets face challenges in providing durable, compact designs that securely store cash and cards while allowing easy access, incorporating additional features, and offering aesthetic appeal.

Innovation Solution

A wallet design featuring a durable, compact structure with interchangeable sidewalls and removable components, including an RFID barrier, spring plate for securing items, and attachable external clip, along with utility features like a bottle opener and attachment points for accessories.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the wallet includes additional features and accessories, then the functionality and versatility are improved, but the size and compactness deteriorate

Engineering Contradiction:

ImprovefunctionalityVSAvoidsize

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The wallet incorporates nested compartments and storage sections where smaller storage spaces are placed within larger ones. The interior cavity contains multiple nested compartments for organizing different items, allowing the wallet to accommodate various accessories and belongings while maintaining a compact external dimensions.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The wallet utilizes three-dimensional space efficiently by creating multi-level interior cavities and vertical stacking of storage compartments. This dimensional organization allows maximum storage capacity within a limited footprint, enabling the wallet to be both compact and highly functional.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the wallet is made more compact, then the portability is improved, but the storage capacity deteriorates

Engineering Contradiction:

ImprovesizeVSAvoidstorage capacity

Core Design Contradiction:

Volume of moving objectVSQuantity of substance

Solution Approach 1:

The wallet incorporates nested compartments and storage sections where smaller storage spaces are placed within larger ones. The interior cavity contains multiple nested compartments for organizing different items, allowing the wallet to accommodate various accessories and belongings while maintaining a compact external dimensions.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The wallet interior is divided into multiple segmented compartments and sections, each designed to hold specific items. This segmentation allows efficient use of space by organizing items in dedicated areas, maximizing storage capacity without increasing overall wallet size.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If the wallet includes multiple compartments and features, then the organization capability is improved, but the device complexity increases

Engineering Contradiction:

Improveorganization capabilityVSAvoidstructural complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The wallet interior is divided into multiple segmented compartments and sections, each designed to hold specific items. This segmentation allows efficient use of space by organizing items in dedicated areas, maximizing storage capacity without increasing overall wallet size.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wallet design incorporates universal attachment mechanisms and perforations that can accommodate various accessories and configurations. The sidewalls can be interchanged or modified to add different features, allowing the basic wallet structure to serve multiple functions without requiring complex dedicated components for each feature.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Reliability

If the wallet uses durable materials, then the reliability is improved, but the weight increases

Engineering Contradiction:

ImprovedurabilityVSAvoidweight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The wallet is constructed using composite materials that combine durability with lightweight properties. The body utilizes materials that provide structural strength and protection for stored items while minimizing weight, achieving a balance between reliability and portability.

Inventive Principle:

Principle #40Composite materials

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 wallet ensures secure storage with easy access, durability, and versatility in design and functionality, accommodating various accessories and aesthetic preferences.

Implementation Method 1

spring plate for securing items

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

RFID (radio-frequency identification) tag

Methodology Applied

Scientific EffectRFID barrier: Electromagnetic Induction

Data Source

PatentUS12593902B2Versatile wallet

Publication Date: 2026.04.07 SAMSON MFG CORP

AI summary

A versatile wallet includes a metal body formed from a front face plate connected to a rear face plate and forming a cavity therebetween. The front and rear face plates define sidewalls on three separate sides of the body, and an opening on a fourth side of the body. The front face plate and rear face plate include aligned perforations extending around their perimeter. A plurality of rivets extend between aligned perforations in the front face plate and the rear face plate. Each rivet is anchored to the rear face plate by a stud and staked within the perforations of the front face plate. The wallet can include removable side panels allowing for quickly changing the appearance of sidewalls, or for the attachment of functional features.