| 摘要 |
A water mattress which can be adjusted to all intermediate degrees of softness between hard and completely soft. The water mattress consisting of water container, open upwards and with a bottom shaped to contain a minimum of water. A flexible elastic watertight cover fastened watertightly to the side walls of the container and a flexible raising and lowering supporting arrangement placed inside said container and an inflatable airmattress placed between said supporting arrangement and the upper cover. The raising and lowering operation and inflation operation being controlled from outside said container.
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