Pocket Spring Mattress With Segmented Cushion Pockets
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Solution Overview
Problem
Conventional pocket coil mattresses suffer from indentation issues due to lateral force transmission, trampoline effect of cushioning materials, premature degradation of sheet foam, heat retention, and health hazards from dust and microorganisms, leading to discomfort, reduced lifespan, and increased costs.
Innovation Solution
The mattress design incorporates individually encased foam cushion pockets directly above and below coil pockets, eliminating sheet cushioning layers, enhancing air circulation, and allowing for selective softness control, thereby reducing indentation, improving comfort, and extending lifespan while minimizing material usage and health risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sheet cushioning material is used above pocket coil springs, then initial loading softness and body contour conforming are improved, but lateral force transmission causes indentation wells that draw the sleeper into the mattress core
Solution Approach 1:
The sheet cushioning material is divided into individually spaced cushion pockets rather than a continuous sheet. Each cushion pocket is separated from adjacent pockets by gaps, preventing lateral force transmission while maintaining vertical cushioning support for sleeper comfort
Solution Approach 2:
The continuous sheet cushioning material is removed and replaced with discrete cushion pockets positioned only above the coil springs. This extraction eliminates the lateral force transmission plane that causes indentation wells while preserving the beneficial vertical cushioning effect
2Strength
If sheet cushioning material is held in place above uncompressed pocket coil springs, then structural support is provided, but tensile strength creates a trampoline effect that resists downward deflection and reduces initial softness
Solution Approach 1:
The continuous sheet cushioning is segmented into individually spaced cushion pockets. Each pocket is supported only by its underlying coil spring, eliminating the continuous tensile strength network that creates the trampoline effect while maintaining adequate support through proper pocket spacing and coil spring configuration
Solution Approach 2:
Cushioning support is localized to specific positions above each coil spring rather than distributed across a continuous sheet. This local quality approach provides support where needed while eliminating the lateral tensile strength that causes the trampoline effect
3Ease of operation
If continuous sheet cushioning material is used, then complete coverage and comfort are provided, but it traps dust, dust mites, and microorganisms creating health hazards
Solution Approach 1:
The continuous sheet cushioning material is divided into individually spaced cushion pockets separated by gaps. These gaps allow air circulation and reduce the trapping of dust, dust mites, and microorganisms while maintaining comfort coverage through the distributed cushion pockets
Solution Approach 2:
The spaced cushion pocket configuration creates a porous structure with air gaps between pockets. This porous arrangement facilitates air circulation that prevents the accumulation of dust and microorganisms while still providing adequate comfort coverage
4Ease of operation
If sheet cushioning material is used to reduce localized high pressure interface points, then patient comfort is improved, but the trampoline effect increases mattress interface pressures that can cause decubitus ulcers
Solution Approach 1:
The continuous sheet cushioning is segmented into individually spaced cushion pockets, each supported by its own coil spring. This segmentation eliminates the trampoline effect while maintaining pressure distribution through the distributed pockets, reducing the risk of decubitus ulcers
Solution Approach 2:
The cushioning system parameters are changed from a continuous tensile strength network to discrete, independently supported pockets. This parameter change eliminates the trampoline effect that increases interface pressures while maintaining the pressure distribution benefit through proper pocket spacing and coil spring selection
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
This design significantly reduces indentation formation, enhances cooling through improved air circulation, allows for customizable firmness, extends mattress life by eliminating shear force-induced degradation, and reduces health hazards and material costs by minimizing cushioning material usage.
Implementation Method 1
a coil spring disposed in said pocket
Implementation Method 2
Marshall Type Spring is a coil spring encased in a material pocket
Implementation Method 3
a resilient member disposed in said first cushion pocket
Data Source
AI summary
The present invention is a mattress comprising a plurality of pocket springs. Each of the pocket springs comprise a coil pocket and a first cushion pocket. The coil pocket comprises a pocket and a coil spring disposed therein. The first cushion pocket comprises a pocket and a resilient member disposed therein. The first cushion pocket is disposed above and acts directly upon the coil pocket. The mattress may further comprise a second cushion pocket disposed below the coil pocket. The second cushion pocket comprises a pocket and a resilient member disposed therein. The second cushion pocket is engaged with and acts directly upon the coil pocket.