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US 5,311,623 AGranted
Hydropneumatic mattress
OwnerElias A. M. Hendiinventor
Life of this patent
Estimating the term…
Abstract
A hydropneumatic mattress with upper water containing tubes and lower air containing tubes is disclosed. The upper and lower tubes are supported by a layer. The tubes are individually removable for replacement. The mattress construction is especially desirable because it is articulatable along its length.
Claims2
A hydropneumatic mattress having a length and a width and with the length being greater than the width, said hydropneumatic mattress comprising:
- a top layer;
- an intermediate flexible impervious layer
- a bottom layer;
- a plurality of air containing tubes situated between said bottom and intermediate layers, said air containing tubes extending transversely of the mattress across its width;
- a plurality of water containing tubes situated between said intermediate and top layers, said water containing tubes extending transversely of the mattress across its width;
- each said water containing tube being positioned directly above an air containing tube;
- each said water containing tube and each said air containing tube being individually removable from said mattress;
- each said air containing tube having a valve to enable adjustment of the amount of air in each said air containing tube;
- each said water containing tube having a valve to enable adjustment of the amount of water in each said water containing tube;
- and
- said mattress when in use being articulatable along its length.
8 more elements
Dependencies are inferred from the claim text.