Improved chair with convex upper backrest and forward seat surfa

Details Improved chair with convex upper backrest and forward seat surfa Improved chair with convex upper backrest and forward seat surfa

1987-05-11

1988-11-08

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

297304, 297361, 297459, A47C 300

Patent

active

047831219

ABSTRACT:
An improved chair (10) having convex back rest portions (11a) and a convex seat front portion (13) is described. The seat is designed to externally rotate the hip joints (P.sub.7 and P.sub.8) of a seated person P towards the floor or other support surface. The convex back rest portions and seat rest portions preferably include flexible segments (A and E) for increased support. The chair provides greater comfort and body support.

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H. Dreyfuss, Architectural Graphic Standards, Am. Institute of Architects, Ramsey/Sleeper 7th Ed., (1981).
Grandjean et al., Ergonomics, vol. 12, No. 2, 307-315, (1969).

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