Chair backrest is linked from rear mid point to seat rear point by flexible tongue

摘要

A chair (2) has a lower frame (4) supporting a horizontal seat (12) and upright backrest (14). The backrest is attached at a rigid point (18) to the rear of the horizontal frame and is able to rise and fall under load. The lower limit of travel is defined by a flexible tongue (34) extending from the backrest rear center section and in contact with the seat rear extremity (28).