Mattress structure having a foam mattress core
US5802646A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | May 24, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G7/05776
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An elongated mattress core for a mattress structure includes a foam core having an upwardly-facing top surface, a bottom surface spaced apart from the top surface, and first and second elongated sides connecting the top and bottom surfaces. The foam core is formed to include a plurality of longitudinally spaced apart transverse slits extending downwardly from the top surface. Each slit terminates at a lower end spaced apart from the bottom surface by a first distance and extending transversely from a first slit end spaced apart from the first side of the foam core to a second slit end spaced apart from the second side of the foam core. Each adjacent pair of slits defines a foam column so that the foam core has a plurality of longitudinally spaced apart and transversely extending foam columns. Each foam column has a pair of generally vertical column side walls defining the slits. Each column side wall includes a shear coating having a low coefficient of friction so that each column can compress and decompress without drag forces resulting from frictional engagement with adjacent column side walls interfering with the compression and decompression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.