Mattress

Details Mattress Mattress

1979-08-20

1981-07-07

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5DIG2, 297DIG1, A47C 2714, A47C 2715

Patent

active

042766664

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.

REFERENCES:
patent: 3026544 (1962-03-01), Persicke et al.
patent: 3049730 (1962-08-01), Wall et al.
patent: 3070402 (1962-12-01), Stanton
patent: 3133853 (1964-05-01), Knox
patent: 3197357 (1965-07-01), Schulpen
patent: 3222697 (1965-12-01), Scheermesser
patent: 3258791 (1966-07-01), Kaplan
patent: 3521311 (1970-07-01), Cohen
patent: 3939508 (1976-02-01), Mall et al.
patent: 4064578 (1977-12-01), Yamada

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