Wave dampened watermattress with tubes and lumbar support
US5077848A · kind A · utility
11Cited by
4References
22Claims
0Family size
Inventors
Key dates
| Filing date | Jul 25, 1991 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Jul 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A tube-type watermattress has a plurality of elongated tubes disposed in a head-to-toe direction in the mattress. A wave dampening insert enclosed in each tube has a center portion which is substantially thicker than the rest of the insert to provide additional firmness and "lumbar" support in the area of the mattress where the lower back or "lumbar" of a person resting on the mattress is usually disposed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.