Elasticized Fitted Top Sheet for Toe Comfort and Smooth Tucking
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Solution Overview
Problem
Existing bed sheets with elasticized pockets at the foot end cause undue pressure on toes and result in an unsightly wrinkled appearance when made up, making them unsuitable for commercial use.
Innovation Solution
A bed sheet with an elastic member only on the lip at the foot, running from one side of the mattress to the other, eliminating elastic material along the sides to prevent pressure and wrinkling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If elasticized material is provided around all edges of the pocket, then the bed sheet remains flat and tight to the mattress, but undue pressure is exerted on the sleeping individual's toes
Solution Approach 1:
The elasticized material is segmented and restricted to specific zones: the lip at the foot end and the side edges, while the center portion at the foot end is deliberately left non-elasticized to create a pressure-free zone for the toes
Solution Approach 2:
Different regions of the bed sheet are assigned different elastic properties: the lip and side edges have elasticized material for stability, while the central foot end region has no elastic material to avoid toe pressure
2Ease of operation
If the pocket aperture is enlarged to accommodate feet, then toes can extend above the mattress without sheet tension, but the sheet creates an unsightly wrinkled appearance
Solution Approach 1:
The foot end region is segmented into an elasticized lip portion for securing and a non-elasticized central portion for accommodating feet without creating wrinkles
Solution Approach 2:
The central foot end region is specifically designed as a non-elasticized zone with different material properties from the elasticized lip, allowing it to accommodate feet while maintaining a smooth appearance
3Stability of the object's composition
If elasticized material is provided around all edges of the pocket, then the bed sheet stays in place, but the amount of elasticized material prevents individuals from poking the bed sheet up when sleeping
Solution Approach 1:
The elasticized portions are segmented and separated from the non-elasticized central region, allowing the sheet to remain stable at the edges while flexible in the center for toe movement
Solution Approach 2:
Different regions have different mechanical properties: elasticized side edges and lip for stability, non-elasticized central foot end for flexibility and adaptability to toe movement
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
Enables easy and efficient bed making with a flat sheet that accommodates toes without pressure, maintaining a smooth appearance and commercial viability.
Implementation Method 1
an easy tuck bed sheet is provided with an elastic member only on a lip at foot of the sheet
Data Source
AI summary
A fitted top sheet is provided with a lip having an elastic member that runs side to side along at least a portion of the lip. This provides corners that grab the corners of the mattress for a form fit, while at the same time permitting movement of the sheet upwardly to accommodate an individual's toes without having to provide a so-called zone of expansion.