Ergonomic chair backrest

Details Ergonomic chair backrest Ergonomic chair backrest

A - Human Necessities

47

C

A47C 7/40 (2006.01) A47C 1/02 (2006.01)

Patent

CA 2565557

A "task" chair intended primarily for a person working at a computer terminal has a back provided with a pair of upright struts that incorporate respective parallelogram linkages operative to increase the curvature of the lumbar region of the seat back while at least substantially maintaining the contour of the upper region of the backrest when a person leans back in the chair.

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