Water mattress with dampening construction
US4168555A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Apr 6, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/085
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A water mattress having a portion of its volume occupied by air or gas filled bodies lowers the total mattress weight without sacrificing its desirable characteristics. The gas filled bodies comprise independent, elongate, parallel chambers having sidewall members which are secured to the bottom panel of the mattress. The chambers are positioned at approximately the horizontal midplane of the mattress such that it exhibits the conventional uniform weight distribution characteristics found desirable in such devices. Air is supplied to or released from the chambers through access fittings on the chambers and water mattress. The water filled mattress weighs substantially less than a conventional mattress having the same external volume. Furthermore, the chambers tend to inhibit the sloshing and highly under-damped natural harmonic motion typical of conventional water mattresses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.