Removable Sheet Duvet Cover for Easier Laundering

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Solution Overview

Problem

Traditional duvet covers are difficult to use due to challenges in aligning corners, require frequent alignment and shaking out, and lack effective protection from soiling, with existing solutions providing inadequate protection and cumbersome insertion/removal processes.

Innovation Solution

A duvet cover design featuring an envelope portion with a removable sheet portion that attaches underneath to shield from soiling, using press studs for easy attachment and detachment, allowing for contrasting colors and patterns, and a fold-back portion for additional protection and aesthetics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional duvet cover with permanently fastened panels is used, then the duvet is protected from soiling, but inserting and removing the duvet becomes difficult and time-consuming

Engineering Contradiction:
Improveprotection from soilingVSAvoidinserting and removing duvet
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The duvet cover is divided into a removable envelope portion and a separate sheet portion. The envelope portion can be detached from the sheet portion, allowing the duvet to be easily inserted into the envelope without the constraint of permanently attached sheets. This segmentation enables independent handling of each component, simplifying the insertion and removal process while maintaining protection functionality.

Inventive Principle:
Principle #1Segmentation

2Reliability

If the duvet cover is designed as a single integrated piece, then it provides complete protection, but laundering becomes difficult and time-consuming

Engineering Contradiction:
Improvecomplete protectionVSAvoidlaundering time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The duvet cover is segmented into two separable components: the envelope portion that contacts the duvet and the sheet portion that provides additional protection. These portions can be detached via releasable fasteners, allowing users to launder only the sheet portion frequently while the envelope portion is laundered less often, significantly reducing overall laundering time and effort.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Different parts of the duvet cover have different laundering requirements. The sheet portion, which is more exposed to soiling, can be removed and laundered separately and more frequently. The envelope portion, which has the duvet insert, requires less frequent laundering. This local differentiation of maintenance requirements optimizes the laundering process.

Inventive Principle:
Principle #3Local quality

3Stability of the object's composition

If the envelope portion is permanently fastened to the sheet portion, then the structure is stable, but the sheet portion cannot be separately removed for laundering

Engineering Contradiction:
Improvestructural stabilityVSAvoidseparate removal of sheet portion
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The fastening system transitions from permanent to dynamic/releasable. Releasable fasteners (such as zippers, buttons, or magnetic closures) are used to connect the envelope portion and sheet portion. These fasteners provide stable attachment during use while allowing easy separation when needed for laundering, enabling the structure to adapt between stable and separable states as required.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8646133B2Duvet cover
Publication Date: 2014.02.11 TEPPER HELEN JANE
  • US8646133B2 patent drawing
  • US8646133B2 patent drawing
  • US8646133B2 patent drawing

AI summary

A duvet cover (10) including an envelope portion (20) substantially closable for enveloping a duvet to shield the duvet from soiling. The envelope portion (120) is removable from the duvet for laundering. The duvet cover further includes a sheet portion (30) attachable to the envelope portion (20) to underlie the envelope portion (20) to shield the underside (21) of the envelope portion (20) from soiling. The sheet portion (30) is removable from the envelope portion (20) for laundering. There is also provided a method of minimizing duvet cover laundering requirements.