Adjustable Bed Mattress Retention Using Flexible Tension Webs
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Solution Overview
Problem
Articulating beds face issues with mattress retention due to the rigidity of dense foam mattresses, which cause the mattress to lift and shift during articulation, making accurate positioning difficult and interfering with bedding application, especially with fitted sheets.
Innovation Solution
A mattress retention system using a tension web attached to the articulating support structure with a fastener moiety and a mating element on the mattress, providing both longitudinal and lateral restraint while allowing easy bedding application by incorporating flexible fasteners like zippers or Velcro.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid frame element is used to retain the mattress, then the mattress longitudinal and lateral position is maintained, but the device complexity increases and bedding application becomes difficult
Solution Approach 1:
The patent uses a flexible tension web instead of a rigid frame element. The tension web is attached to the foot support member and extends upward to engage the mattress, providing retention through a flexible, thin film structure that reduces device complexity while maintaining position stability.
Solution Approach 2:
The patent changes the physical state of the retention element from rigid to flexible. By using a tension web that can flex and stretch, the system maintains mattress retention capability while reducing structural complexity and improving ease of bedding application.
2Reliability
If a rigid frame element extends to the edge to retain the mattress, then the mattress is restrained, but it interferes with applying bedding particularly fitted sheets
Solution Approach 1:
The flexible tension web allows bedding to be easily applied over it without interference. Unlike a rigid frame that would block bedding application, the flexible web can be integrated into the bedding process, maintaining mattress retention while enabling easy fitted sheet application.
3Strength
If the mattress is made of dense foam for adequate support, then the support and comfort is improved, but the mattress tends to lift and shift during articulation
Solution Approach 1:
The tension web applies a preliminary restraining force to the mattress before articulation occurs. By being attached to the foot support member and engaging the mattress, it prevents the mattress from lifting and shifting during articulation movements, counteracting the effect of the dense foam's rigidity.
4Reliability
If the tension web is attached close to the edge of the support structure, then the mattress retention is effective, but the flexibility in attaching fasteners is reduced
Solution Approach 1:
The tension web is designed with flexibility to accommodate different fastener attachment positions. It can be attached at various distances from the edge of the support structure, allowing adaptation to different mattress and bed configurations while maintaining effective retention through its tensioning mechanism.
Data Source
AI summary
A mattress retention system for adjustable beds employs a tension web attached to a top surface of an element of an articulating support structure. The tension web is inset from a longitudinal edge and lateral edges of the articulating support structure element and incorporates a first fastener moiety on an extending edge. A mating element is attached to the bottom surface of a mattress adjacent an edge to be restrained. The mating element incorporates a second fastener moiety for operable connection to the first fastener moiety and includes a web section having a first edge attached to the bottom surface of the mattress and a second edge carrying the second fastener moiety for flexibility in attaching the fastener moieties.