Recyclable ergonomic seat
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Solution Overview
Problem
Traditional seating furniture often uses non-recyclable materials, lacks modularity, and suffers from decreased comfort and support over time, leading to premature replacement and environmental waste.
Innovation Solution
A recyclable ergonomic seat with a modular design featuring a cushion structure composed of polyethylene foam and a removable outer covering, utilizing polyurethane foam or recycled denim batting, with a releasable fastener and non-slip surface, allowing for easy maintenance and recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional non-recyclable materials like polyurethane foam are used for cushioning, then comfort and support are provided, but environmental waste increases and sustainability is compromised
Solution Approach 1:
The patent changes the material parameter from traditional polyurethane foam to polyethylene foam, which has different chemical properties that enable recyclability while maintaining the required cushioning and support functions
Solution Approach 2:
The patent implements a design where the foam layers can be removed and recycled separately from the frame, allowing the cushioning material to be recovered and reused rather than discarded with the entire furniture piece
2Ease of manufacture
If traditional non-modular seat designs are used, then construction is simpler, but maintenance, cleaning, and replacement of components become challenging
Solution Approach 1:
The patent divides the seat into distinct modular components including removable foam layers, separable cushion covers, and an independent frame structure, allowing individual parts to be easily maintained, cleaned, or replaced without affecting the entire seat
3Reliability
If traditional fixed cushion designs are used, then initial comfort is provided, but cushions lose their shape and support over time necessitating premature replacement
Solution Approach 1:
The patent implements removable and reconfigurable foam layers that can be taken out, rotated, or flipped to distribute wear evenly, preventing permanent deformation and extending the functional life of the cushioning system
Solution Approach 2:
The patent designs the foam layers with built-in rotation capability, allowing users to periodically reverse the cushions to distribute mechanical stress and prevent premature loss of shape and support
4Ease of manufacture
If traditional integrated seat designs are used, then manufacturing is simpler, but recycling and component replacement become difficult
Solution Approach 1:
The patent separates the seat into distinct modules including the frame, foam layers, and covers that can be independently removed and recycled, transforming a traditionally integrated design into a modular system that maintains manufacturing simplicity while enabling recyclability
Data Source
AI summary
A seat includes a cushion structure having an inner foam layer including polyethylene foam and an outer cushion layer including polyurethane foam. A removable outer covering encases the cushion structure. The outer covering includes an upper section and a lower section joined by a releasable fastener. The lower section includes a non-slip surface that extends up a portion of the sides of the seat. The inner foam layer may include a plurality of foam layers stacked atop one another. The outer cushion layer may include a top layer, a bottom layer, and a sleeve that surrounds the sides of the inner foam layer. The sleeve may be formed from a rectangular sheet of polyurethane foam with opposed ends sealed together to form a continuous loop.