Sheet retainer
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Solution Overview
Problem
Existing solutions for maintaining a bed sheet on a mattress in a wrinkle-free or taut condition are either complex in construction or prone to damaging the sheet material, such as elastic bands and clips that can tear or rip the fabric.
Innovation Solution
A sheet retainer comprising a base member with a textured surface and a vertically extending rail member, made of silicone, which is placed beneath the mattress corner to secure the sheet in a taut position without causing damage, featuring a simple design for easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elastic bands or clips are used to hold the bed sheet, then the sheet can be secured to the mattress, but the sheet material may be torn or ripped
Solution Approach 1:
The patent introduces a sheet retainer as an intermediary device between the elastic band and the sheet. The retainer has a smooth inner surface that contacts the sheet, preventing direct damage from the elastic band's gripping force. The retainer acts as a mediator that distributes the holding force evenly across the sheet material without concentrated stress points that would cause tearing.
Solution Approach 2:
The patent changes the surface parameter of the retainer to have a smooth inner surface rather than a rough or gripping surface. This parameter change allows the retainer to glide over and protect the sheet fabric while still maintaining retention through the outer textured surface's interaction with the mattress corner, thus preventing fabric damage while preserving sheet security.
2Reliability
If clips with spring mechanisms are used to secure the sheet, then the sheet can be held firmly, but the construction becomes complex and expensive to manufacture
Solution Approach 1:
The patent extracts and eliminates the spring mechanism and complex clip structure from the design. Instead of using a mechanical spring-loaded clip, the invention uses a simple retainer body with an inner smooth surface and outer textured surface that relies on elastic band tension and friction against the mattress corner to achieve secure retention without any moving parts or complex mechanisms.
Solution Approach 2:
The patent changes the retention mechanism from active mechanical engagement (springs and clips) to passive friction-based retention. The textured outer surface provides sufficient friction against the mattress corner to hold the sheet firmly without requiring complex mechanical components, thereby simplifying the construction while maintaining reliability.
3Ease of manufacture
If a simple retainer design is used, then manufacturing is easier and cost-effective, but the sheet may not remain taut without additional mechanisms
Solution Approach 1:
The patent changes the surface texture parameter of the retainer's outer surface to be textured or ribbed, which significantly increases the friction coefficient between the retainer and the mattress corner. This parameter change allows the simple retainer design to generate sufficient frictional force to keep the sheet taut without requiring complex mechanical tensioning mechanisms, thus maintaining both manufacturing simplicity and sheet tautness.
Solution Approach 2:
The retainer is designed with a curved or contoured shape that conforms to the corner of the mattress. This curvature allows the retainer to wrap around and grip the mattress corner more effectively, increasing contact area and friction, thereby maintaining sheet tautness with a simple design that remains easy to manufacture.
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
The sheet retainer effectively maintains the bed sheet in a taut condition without damaging the fabric or mattress, providing a practical and economical solution for keeping bedclothes smoothly in place during use.
Implementation Method 1
a base member (12) having a textured surface (18)
Data Source
AI summary
A sheet retainer to retain a sheet fitted onto a bed in a wrinkle free or taut condition is disclosed herein. The sheet retainer includes a base member, a rail member, and a grip member. The rail member extends vertically from at least a portion of an end of the base member. The base member is placed beneath a corner edge of the mattress securing the bed sheet and pushed or butted against the rail member to maintain the bed sheet onto the mattress in a taut position. The base member includes a textured surface to retain the bed sheet fitted onto the mattress in the taut condition and prevent dislodging of bed sheet from the mattress. Advantageously, the sheet retainer holds the bed sheet tucked beneath the mattress in taut condition without causing damage to the bed sheet, or to the user during use.