Cushioning system with parallel sheets having opposing indentions for linear deflection under load
US7574760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Jun 18, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/144
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cushion comprises a first surface made of flexible high polymer resin; a second surface made of flexible high polymer resin, in at least partially coextensive relation to the first surface to define a cavity therebetween, the coextensive relation defining opposing corresponding portions of the first and second surfaces; a plurality of support members comprising inwardly directed indentations in both of the first and second surfaces extending into the cavity, a plurality of the indentations in each of the first and second surfaces having a square shape and an outwardly facing recess, a plurality of the indentations in the first surface abutting the indentations in the second surface; a layer of viscoelastic foam substantially overlying the first surface; and, a fabric enclosure surrounding the first surface, the second surface and the foam layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.