Laminated visco-elastic support
US7507468B2 · kind B2 · utility
22Cited by
102References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2003 |
| Grant date | Mar 24, 2009 |
| Priority date | — |
| Expiry date | Mar 31, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/647
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A laminated support for pressure-relief comprising an upper layer of visco-elastic foam, a middle layer of visco-elastic foam having a greater hardness, and a bottom layer of highly resilient polyurethane foam. These layers are sandwiched between two layers of reticulated filter polyurethane foam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.