Easy Fit Fitted Bed Sheet
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Solution Overview
Problem
Existing fitted bed sheets with 90-degree corners at the mattress edges are difficult to apply to deeper and heavier mattresses, often resulting in a baggy, saggy appearance when cut to exact or larger dimensions, and require significant effort to secure, leading to an uncomfortable sleeping experience.
Innovation Solution
A fitted bottom bed sheet with mitered corners cut at an acute angle, forming side and end panels that converge to a point and are sewn together to create a longer outer edge for easier application and a snug fit, allowing for greater ease of use and a neat appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the sheet is made smaller than the mattress dimensions to achieve a neat appearance, then the aesthetic quality is improved, but the ease of application deteriorates as considerable effort is required to lift and secure the sheet
Solution Approach 1:
The patent transitions from a two-dimensional flat sheet to a three-dimensional construction by folding the sheet at diagonal lines to form box-like corners. This dimensional change allows the sheet to accommodate deeper mattresses while maintaining a neat appearance and reducing application effort, as the folded structure naturally conforms to the mattress depth.
2Ease of operation
If the sheet is cut to exact or greater dimensions to ease application, then the ease of operation is improved, but the aesthetic quality deteriorates resulting in a baggy, saggy appearance
Solution Approach 1:
The patent divides the corner regions of the sheet into separate folded sections created by diagonal fold lines. This segmentation allows the sheet to have extra material for easy application while the folded segments consolidate the excess material into a neat, structured form that prevents bagginess and sagging.
3Reliability
If the sheet is made to fit deeper mattresses securely, then the reliability of fit is improved, but the ease of operation deteriorates requiring significant effort to lift and secure the sheet
Solution Approach 1:
The patent creates a dynamic, multi-level folded structure at each corner that can adapt to different mattress depths. The box-like construction formed by diagonal folds provides a secure fit for deeper mattresses while the flexible folded design allows easier manipulation and application compared to a rigid, tightly fitted sheet.
Data Source
AI summary
A fitted bottom bed sheet formed from a fabric sheet that includes corner cutouts, from each corner of the fabric sheet, wherein the corner cutouts form side panels and end panels, which terminate in longitudinal cut edges and lateral cut edges that each converge to a point. The longitudinal cut edges and the lateral cut edges are sewn together to form mitered corner edges that are formed at an acute angle or at an angle that is 1 or more degrees from a line extending from the point and are orthogonal to a plane of the fabric sheet.