Contoured seat base

Details Contoured seat base Contoured seat base

1988-11-03

1990-09-04

Brown, Peter R.

Chairs and seats

Bottom or back

Framework

297DIG2, 297DIG4, 5446, A47C 716, A47C 762

Patent

active

049539132

ABSTRACT:
A seat base is interposed between a supporting surface, such as the sling-type seat of a wheelchair, and a cushion or even the user, it having a lower contour which generally matches the contour of the supporting surface and a upper contour which provides a comfortable seating surface or gives a desired shape to an overlying cushion. The lower contour is established by a plurality of transversely directed ribs, whereas the upper contour is established by transversely directed panels located between the ribs. The polymer material from which the seat base is formed has uniform thickness and as a consequence the ribs create grooves that open out of the upper surface to separate the panels.

REFERENCES:
patent: 3463547 (1969-08-01), Brennan et al.
patent: 3503649 (1970-03-01), Johnson
patent: 4726624 (1988-02-01), Jay
patent: 4753480 (1988-06-01), Morell
patent: 4819286 (1989-04-01), Beauchamp

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