Beds and mattresses

Details Beds and mattresses Beds and mattresses

1978-03-27

1980-03-18

Nunberg, Casmir A.

Beds

Bedclothing

And means to facilitate changing thereof

5450, 5453, 5456, 128 38, A61H 100, A61G 710

Patent

active

041931491

ABSTRACT:
A multi-layer mattress comprises inflatable tubes each of which extends across a dimension of the mattress and form part of one of a number of arrays extending through each layer. All the tubes of any one array of which there are optimally three, are inflatable in common and are arranged in substantial vertical alignment with a corresponding array in another layer. Sequential inflation and deflation of each array causes ripples to travel along the mattress so that a patient lying on it has his weight-supporting areas continually changed. A preferred embodiment has two layers of tubes, each tube of which extends across a width of the mattress.

REFERENCES:
patent: 2998817 (1961-09-01), Armstrong
patent: 3492988 (1970-02-01), De Mare
patent: 3631438 (1971-12-01), Lewin
patent: 3674019 (1972-07-01), Grant
patent: 3678520 (1972-07-01), Evans

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