Chair having back shell with selective stiffening

Details Chair having back shell with selective stiffening Chair having back shell with selective stiffening

1997-03-17

1998-09-15

Brown, Peter R.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

29728411, 2973021, 297312, A47C 1032

Patent

active

058069305

ABSTRACT:
A chair includes a base, a seat, a back pivoted to the base and an inner shell construction connecting a cushion assembly to the back. The shell includes a semi-rigid, flexible sheet having a back portion shaped to support a back area of an adult user. The back portion includes a central area and an upper area. A plurality of ribs are formed integrally with the sheet to stiffen the central area of the back portion for lumbar support yet permit the upper portion of the back portion to flex for improved freedom of movement of the upper back area of the user.

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