Inflatable mattress and method of making the same
US4624877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1983 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Nov 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249992
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A method of making a self-inflating air mattress comprising an open cell foam core enclosed within, and bonded to, upper and lower sheets. Each sheet is made by heat laminating to an outer substantially nonstretching fiber layer an intermediate solid polymer film layer to which is then heat laminated an inner solid polymer film layer having a melting temperature at which the intermediate film layer is structurally stable. The sheets are pressed against the foam core by heated platens, and afterwards cooled. These particular sheets form a reliable bond and alleviate a problem of creating air leaks through the intermediate film layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.