Mattresses with stabilized upper surfaces

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Solution Overview

Problem

Mattresses with primary cushions made of dense gel material tend to separate from side rails when placed on adjustable platforms, leading to premature wear due to the gel settling into concavely angled joints, which existing technologies fail to adequately prevent.

Innovation Solution

Incorporating strips of scrim fabric over the interfaces between the primary cushion and side rails, and optionally end rails, to secure them together with adhesive materials, ensuring the side rails remain flush with the primary cushion's surface even on contoured platforms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the mattress is placed on an adjustable platform with contoured surfaces, then the mattress can adapt to different sleeping positions and provide ergonomic support, but the primary cushion may separate from the side rails due to gravitational settling into concave joints

Engineering Contradiction:

Improvemattress adaptability to adjustable platform contoursVSAvoidstability of primary cushion-rail interface

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies preliminary action by pre-securing the primary cushion to the side rails using adhesive materials and scrim fabric before the mattress is placed on the adjustable platform. This preventive measure ensures that when the platform is adjusted to contoured positions, the cushion remains bonded to the rails and does not separate or settle into the concave joints, thus maintaining interface stability while allowing platform adaptability.

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If adhesive materials are used to bond the primary cushion to the side rails, then the cushion remains stable and prevents settling, but the adhesive may fail over time leading to premature wear

Engineering Contradiction:

Improvestability of primary cushion-rail interfaceVSAvoidlong-term reliability of adhesive bond

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The patent employs composite materials by combining the adhesive material with scrim fabric to create a hybrid bonding system. The scrim fabric serves as a reinforcement layer that distributes mechanical stresses across the bond line, reducing the burden on the adhesive alone. This composite approach enhances the long-term reliability of the interface by preventing adhesive failure and cushion separation, thereby extending the mattress service life.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The scrim fabric acts as a flexible thin film that conformally bonds to both the primary cushion and side rails, maintaining flexibility while providing structural reinforcement. This flexible film allows the interface to accommodate minor movements and platform adjustments without compromising the adhesive bond, thus improving long-term reliability while maintaining stability.

Inventive Principle:

Principle #30Flexible shells and thin films

3Strength

If the side rails are made from rigid polyurethane foam to maintain mattress periphery, then the rails can confine the primary cushion effectively, but the rigid structure may not conform to contoured platform surfaces

Engineering Contradiction:

Improvestructural strength of side railsVSAvoidconformability to platform contours

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by making the side rails dynamically adaptable through the addition of scrim fabric coverage. The scrim fabric allows the rigid foam rails to flex and conform to the contoured surfaces of the adjustable platform while maintaining their structural strength. This dynamic behavior enables the rails to simultaneously provide peripheral confinement and adapt to platform contours, resolving the contradiction between rigidity and conformability.

Inventive Principle:

Principle #15Dynamics

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 scrim fabric stabilizes the mattress surface, preventing the primary cushion from separating from the side rails, thereby reducing premature wear and maintaining the mattress's integrity on adjustable platforms.

Implementation Method 1

The scrim fabric may comprise a material that may receive (e.g., engage, be impregnated with, etc.) an adhesive material (e.g., a glue)

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS20240245225A1Mattresses with stabilized upper surfaces

Publication Date: 2024.07.25 PURPLE INNOVATION LLC

AI summary

A mattress assembly with a surface that is stabilized to prevent separation of rails (e.g., side rails, end rails) from edges of a primary cushion of the mattress assembly. A strip of scrim fabric may overlap each rail and an adjacent portion of the primary cushion to stabilize the interface or seam between an edge of the primary cushion and a rail positioned against that edge. Methods for stabilizing the upper surfaces of mattress assemblies are also disclosed, as are adjustable beds including mattresses with stabilized upper surfaces.