Mattress core and mattress providing pressure relief and minimizing body pressure
US6782575B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2003 |
| Grant date | Aug 31, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/15
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A mattress core is defined by a base core to which is bonded upper and lower corrugated outer layers each having oppositely directed corrugations, and side rails bonded to at least sides of the base core. The side rails have a height corresponding to the distance between valleys of opposite corrugated outer layers. The mattress core and mattress have an ILD range of substantially 26 ILD to 50 ILD for the side rails, 24 to 40 ILD for the base core and 12 to 45 ILD for each of the corrugated outer layers. The base core and the outer layers also collectively define a torso firmness zone and opposite head and foot firmness zones with the torso firmness zone being substantially between 20% to 30% more dense than the head and foot firmness zones. Ends of the mattress core and mattress are devoid of end rails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.