Surge dampened water bed mattress
US4292702A · kind A · utility
Inventor
Key dates
| Filing date | Jul 20, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Jul 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86212
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An elongate flotation mattress having horizontal top and bottom walls, vertical side and end walls, a plurality of vertical, laterally spaced, longitudinally extending partitions between the top and bottom walls and coextensive with the major central portion of the mattress and defining longitudinally extending fluid conducting tunnels; and a fluid medium slackly filling the mattress structure; the partitions are serpentine and are arranged whereby each tunnel defines a plurality of longitudinally spaced flow restricting venturi and circulating chambers between the venturi to slow and dampen surging and residual wave action of fluid when fluid within the mattress is displaced by forces directed onto the top wall; the mattress further includes apertured flow-controlling diaphragms at the ends of the tunnels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.