Air-over-foam mattress
US6212718A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/914
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A mattress structure (30) having a plurality of side-by-side lower support elements (50), a layer of material (54) underlying the lower support elements (50), and a plurality of side-by-side upper support elements (52) overlying and being supported by lower support elements (50) is described. The upper support elements (52) are connected by a plurality of tethers (128) to the layer of material (54), with the tethers (128) extending between adjacent lower support elements (50). Each of one of the upper support elements (52) and lower support elements (50) is an inflatable air bladder with specified sets of air bladders defining tube set zones (142, 144, 146). The pressure of the zones (142, 144, 146) is controlled by an air pressure system (170).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.