RFID-Blocking Metal Wallet Structure for Slim High-Capacity Storage

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional wallets are bulky, prone to bulging and card loss, and offer inadequate security against identity theft and RFID theft, with limited capacity and uncomfortable to carry.

Innovation Solution

A wallet design featuring CNC machined metal shells with anodized aluminum and leather, incorporating RFID-blocking materials, multi-tool accessories, and a secure closure mechanism, allowing for a slim profile with high card and cash capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If multiple storage pockets are sewn to hold cards, then card storage capacity is improved, but wallet thickness and bulk increase

Engineering Contradiction:

Improvecard storage capacityVSAvoidwallet thickness

Core Design Contradiction:

Quantity of substanceVSLength of stationary object

Solution Approach 1:

The wallet transitions from a traditional flat horizontal layout to a vertical three-dimensional structure. Cards are stored in a vertical orientation within a single compartment rather than horizontally across multiple layers, effectively utilizing the vertical dimension to increase storage capacity while maintaining a slim profile.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The wallet employs modular components including removable card holders, dividers, and compartments that can be independently arranged or removed. This segmentation allows flexible organization of cards in a vertical stack without requiring multiple thick layers of material.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If fabric or leather material is used and sewn to form storage pockets, then card storage functionality is improved, but wallet bulk and discomfort increase

Engineering Contradiction:

Improvecard storage functionalityVSAvoidwallet weight and bulk

Core Design Contradiction:

Ease of operationVSWeight of moving object

Solution Approach 1:

The wallet utilizes a flexible plastic or polymer shell instead of traditional fabric or leather. This thin-film approach provides the necessary flexibility for card insertion and removal while significantly reducing material thickness and weight, eliminating the bulk associated with sewn fabric pockets.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If a metal clip with spring tension is used to hold cards, then card security is improved, but maximum card capacity is limited

Engineering Contradiction:

Improvecard securityVSAvoidmaximum card capacity

Core Design Contradiction:

ReliabilityVSQuantity of substance

Solution Approach 1:

Instead of using spring tension in a horizontal plane to hold cards, the wallet utilizes vertical stacking with friction-based retention. Cards are held securely through the friction between card surfaces and the compartment walls, allowing vertical stacking of multiple cards without the capacity limitations of a horizontal clip mechanism.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

4Ease of operation

If conventional clip-based holder is used, then card holding capability is improved, but RFID security is worsened

Engineering Contradiction:

Improvecard holding capabilityVSAvoidRFID theft vulnerability

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent incorporates RFID-blocking material within the vertical card storage compartment. This converts the potential harm of RFID theft into a protective feature, where the same compartment that holds cards also provides electromagnetic shielding, turning a security vulnerability into a security advantage.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Data Source

PatentUS20260013606A1wallet

Publication Date: 2026.01.15 CTB HOLDINGS LLC

AI summary

A wallet includes a first metal shell with one or more openings on a shell perimeter adapted to clip one or more objects to the one or more openings; a second metal shell coupled to the first shell with a storage compartment therebetween; and securing a soft material to the first and second metal shells, wherein the soft material comprises compartment to store cards or money therein.