Fold-Out Phone Billfold With Hidden Card and Cash Storage

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Solution Overview

Problem

Carrying bulky wallets and cluttered purses is inconvenient, increasing the likelihood of item misplacement, and there is a need for a more convenient and secure way to carry credit cards and cash without them.

Innovation Solution

A cell phone accessory with a built-in billfold featuring a hidden compartment, credit card slots, and a mirror, integrated into the back of the phone, providing secure storage and easy access to essentials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If users carry bulky wallets and cluttered purses to store credit cards and cash, then storage capacity is sufficient, but convenience deteriorates and likelihood of misplacement increases

Engineering Contradiction:
Improvestorage capacityVSAvoidconvenience
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The patent combines the functions of a wallet (credit card slots, cash pocket) and a mirror into a single compact billfold accessory that attaches to the cell phone. This merging eliminates the need to carry separate bulky wallets and purses while maintaining storage capacity for essential items.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The billfold serves multiple functions: storing credit cards, holding cash, and providing a mirror for personal grooming. This multi-functionality consolidates what would traditionally require multiple separate items into one convenient accessory attached to the phone.

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

2Adaptability or versatility

If users carry multiple separate bags or purses for essentials, then storage organization is improved, but device complexity increases

Engineering Contradiction:
Improvestorage organizationVSAvoidnumber of items
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent merges multiple storage functions (credit card slots, cash pocket) and a mirror into a single integrated billfold accessory. This reduces the number of separate items users need to carry while maintaining organized storage for different essentials.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If a hidden compartment is added to the cell phone back, then security is improved, but manufacturing complexity increases

Engineering Contradiction:
ImprovesecurityVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The billfold is constructed as a separate accessory component that attaches to the cell phone rather than being integrated into the phone itself. This segmentation allows the hidden compartment functionality to be manufactured independently and then attached, reducing the manufacturing complexity of the cell phone while maintaining security benefits.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250344821A1Cellphone Billfold
Publication Date: 2025.11.13 KEYES LATOCIA
  • US20250344821A1 patent drawing
  • US20250344821A1 patent drawing

AI summary

A cell phone accessory includes a billfold attached to a back side of the cell phone and a fold along a long side of the cell phone separating two sections. A first section of the two sections includes a camera lens first cutout, an inside comprising multiple compartments and an outside. A second section of the two sections includes a camera lens second cutout, an inside and an outside. Embodiments of the disclosure include a pocket and a plurality of credit card slots. A mirror or a reflective surface is disposed on the inside of the second section. The paper currency pocket is usually parallel with the fold and the multiple credit card slots configured orthogonal to the paper currency pocket.