Beds – Bedclothing – And means to facilitate changing thereof
Patent
1990-08-29
1991-04-09
Grosz, Alexander
Beds
Bedclothing
And means to facilitate changing thereof
5464, A47C 2710
Patent
active
050052381
ABSTRACT:
A water bed mattress comprises a rectangular compressible plastic foam sheet containing a plurality of uniformly dispersed cylindrical cutouts across the surface area of the compressible sheet. A separate water cushion is located in each of the cutout areas. The water cushion comprises a hollow, flexible enclosure made of a cylindrical closed ended flexible plastic material. Water is contained within the interior of each flexible plastic enclosure. In one embodiment, the plastic water-filled cushion fills approximately the upper two-thirds of each cylindrical cutout, and the lower one-third portion of the cylindrical cutout is filled by a compressible plastic foam disc. A cardboard ring having an inner diameter approximately equal to the diameter of the cylindrical cutout is located on the upper surface of the rectangular compressible plastic foam sheet and concentric with the cylindrical cutouts. A plastic cylindrical cutout liner covers and is heat sealed to the cardboard ring. The cylindrical cutout liner lines the interior portion of the cylindrical cutout and acts as a retaining barrier in case of any water cushion leakage. A heat reflective tufted quilt covers, and is removable mounted to the upper surface of the compressible plastic foam sheet. Because of the uniform dispersion of the water cushions, the wave action of the mattress is contained in both latitudinal and longitudinal directions. When pressure is applied downwardly on any of the water cushions, the sides of the plastic enclosure spread outwardly into the adjacent foam pad to absorb the downward pressure.
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patent: 4912789 (1990-04-01), Maxwell
patent: 4947500 (1990-08-01), Seiler
Grosz Alexander
Nature Sleep Corporation
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