Chairs and seats – Bottom or back – Framework
Patent
1984-11-08
1987-02-17
McCall, James T.
Chairs and seats
Bottom or back
Framework
5436, 297DIG1, 297DIG2, 297DIG4, A47C 702
Patent
active
046434810
ABSTRACT:
A seat system comprised of a base and cushion. The base has a specially contoured support surface including a forward section and a rearward section. The rearward section has a pair of wings surrounding a void over which the user's ischia and coccyx are to be positioned. The void is mushroomed in its cross-sectional shape because the rearmost portion of the wings contain enlargements for providing support to the buttock at the rear. A sloped forward support surface rises forwardly of the void and tapers into a single ridge which continues forwardly to separate a pair of troughs. This forward support surface, together with the wings and rear support surfaces form a "bucket" or bowl-shaped portion of the total seating surface for proper positioning of the ischia and coccyx over the void. The cushion has a peripheral shape matching that of the base, including a void which is mushroomed in cross-sectional shape. Means are provided for securing the cushion to the base with the void of each in approximate registration. The wings of the cushion may be secured in a plurality of positions relatively closer to or further away from one another, thus providing a precise adjustment to the needs of a particular user.
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Saloff David
Saloff William S.
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