Beds – Bedclothing – And means to facilitate changing thereof
Patent
1991-06-24
1993-03-23
Grosz, Alexander
Beds
Bedclothing
And means to facilitate changing thereof
5464, A47C 2708
Patent
active
051951967
ABSTRACT:
A waterbed mattress including an elongated top sheet having head and foot ends, a bottom sheet, and sidewalls defining a fluid-tight receptacle. The top sheet includes a plurality of elongated depressions and riser portions formed therein and arranged to impart extensibility to the top sheet. The depressions and riser portions are arranged in a non-uniform distribution across the surface of the top sheet so that the extensibility of the top sheet varies at different positions therealong.
REFERENCES:
patent: 3456270 (1969-07-01), Weinstein et al.
patent: 3849814 (1974-11-01), Ross
patent: 4534078 (1985-08-01), Viesturs et al.
Hall Charles P.
Johenning John B.
Grosz Alexander
Land and Sky Manufacturing, Inc.
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