Beds – Bedclothing – And means to facilitate changing thereof
Patent
1987-08-04
1989-04-11
Grosz, Alexander
Beds
Bedclothing
And means to facilitate changing thereof
297DIG1, 297458, 5464, A47C 2715
Patent
active
048192880
ABSTRACT:
A foamed elastomeric seat cushion (10), especially for a wheelchair, has an overall upper part (20) supported by a lower part (30), the lower part rear portion (40) being formed by two like transversely spaced blocks (40a,40b), each block being of sandwich construction with front-to-rear upright layers, and higher density in an intermediate layer than the associated outer layers. These blocks extend forwardly to about the cushion middle, they extend similarly upwardly, they have about equal width with their mutual spacing, and they have layers of about equal thickness. The lower part front portion (50) can be formed with similar blocks (50a,50b), but with transversely directed layers and a smaller block spacing. The upper part can also be of multiple layers (21,22,23) with an increase in density for downwardly successive layers up to no more than the minimum density in the lower part.
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Grosz Alexander
National Research Development Corporation
Nicholson Eric K.
LandOfFree
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