Reversible Pocket With Interchangeable Surface Layers

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Solution Overview

Problem

Conventional pockets lack the ability to easily change their surface configuration, which can be undesirable for fashion or functional reasons, as they typically have predetermined inner and outer surfaces.

Innovation Solution

A pocket design featuring two layers with a zipper system that allows the user to interchange the major surfaces, enabling the exterior and interior surfaces to be swapped, thereby altering the pocket's appearance and functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a pocket has predetermined inner and outer surfaces, then the manufacturing is simple and structure is stable, but the user cannot change the surface configuration for fashion or functional reasons

Engineering Contradiction:
Improvesurface configuration changeabilityVSAvoidpocket structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The first wall is segmented into multiple layers (first layer and second layer) that can be independently moved relative to each other. Each layer has its own major surfaces, allowing the pocket to display different surface configurations by changing which layer's surfaces are exposed on the interior and exterior sides.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The pocket structure transitions from a static configuration to a dynamic one where the layers can be moved through the opening. The zipper connection allows the layers to be repositioned, enabling the user to interchange which surfaces form the interior and exterior surfaces of the pocket.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If the pocket allows surface interchange, then the adaptability and versatility are improved, but the device complexity increases due to multiple layers and zipper system

Engineering Contradiction:
Improvesurface interchange capabilityVSAvoidsurface changing operation
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The zipper acts as an intermediary mechanism that facilitates the movement and interchange of layers. The first part of the zipper is arranged at the interior surface while the second part is on the exterior surface, allowing the user to easily open and close the zipper to reposition layers and change surface configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The zipper serves multiple functions: it connects the first and second walls to form the pocket closure, and simultaneously enables the interchange of layer positions. This multi-functionality allows the same mechanism to both secure the pocket and enable surface reconfiguration.

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

Data Source

PatentEP4201250B1Reversible pocket
Publication Date: 2024.05.01 BECKMANN GMBH
  • EP4201250B1 patent drawingFigure 1~2
  • EP4201250B1 patent drawingFigure 3~4
  • EP4201250B1 patent drawingFigure 5a~5d

AI summary

The present disclosure relates to a pocket, whose surface may be altered. In some examples, the pocket may be attached to a backpack. Additionally, this disclosure relates to a method for altering a surface of the pocket.