Water mattress bag, and a method for producing the same

Details Water mattress bag, and a method for producing the same Water mattress bag, and a method for producing the same

1987-04-01

1988-12-27

Grosz, Alexander

Beds

Bedclothing

And means to facilitate changing thereof

5450, 156217, 1563084, A47C 2708

Patent

active

047930136

ABSTRACT:
A water mattress bag (1) of a watertight resilient material with tensile strength is provided with a valve for filling/draining water and is intended for use together with a main mattress member (3) of a resilient, flexible foamed plastic or the like, which is provided with a recess (4) in its upper face extending over a substantial portion of its length (L) and width (B). The bottom (1a) of the bag (1) is shaped with a bulge (1a') for cooperation with recess (4), and the top (1d) of the bag (1) has a length and width approximately equal to the length (L) and width (B).
Water mattress (10) comprises the above mentioned components and a flexible sheet (15) on top of water mattress bag (1) and a mattress cover (16). Water mattress bag (1) is partly filled with water and extends outwards to the lateral edges (3a) of main mattress member (3) and covers the flat edges (3b) of main mattress member (3) around recess (4). Sheet (15) is a weight distributing sheet and shaped complementary with the opening of recess (4), and has a thickness (a) causing the top (15a) of weight distributing sheet (15) to project higher than said flat edges (3b) of main mattress member (3) in a non-loaded state. Mattress cover (16) is stretched around main mattress member (3) with components (1,15) to provide a bias/increase of pressure of the water in water mattress bag (1) in an un-loaded state of the mattress (10).

REFERENCES:
patent: Re32420 (1987-09-01), Autry et al.
patent: 3789442 (1974-02-01), Tobinick
patent: 3815165 (1974-06-01), Tobinick et al.
patent: 4186455 (1980-02-01), Fox et al.
patent: 4187566 (1980-02-01), Peterson
patent: 4354289 (1982-10-01), Richards et al.

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