Mattress
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United States of America Patent
Stats
-
Jul 7, 1981
Grant Date -
N/A
app pub date -
Aug 20, 1979
filing date -
Dec 12, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mattress is composed of a sponge like material which compresses by 65% of the thickness thereof under a load of 30 Kg per 314 cm.sup.2. The mattress is treated so that it subsequently is compressed by 65% of the thickness thereof under a load of 25 Kg per 314 cm.sup.2. The treatment consists of providing the upper surface of the mattress with a plurality of protuberances. The mattress may be composed of several layers of such material, each having such a plurality of protuberances on one surface. The mattress may be encased by elastic netting.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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