Armless chair, has bending arm partially extending toward seat, and lever arm comprising short length when support is in top position with respect to seat and long length when support is in bottom position with respect to seat

摘要

The chair has a support and a height adjustable abutment (131) mounted on the support. The support includes an end (134) connected to a seat (12) and a free end (136) defining a bending arm (138) to permit an inclination of a backrest (13) with respect to the seat. The arm partially extends toward the seat, and a top position of the abutment on the support defines a lever arm (139) on the bending arm. The lever arm has short length when the support is in a top position with respect to the seat, and long length when the support is in a bottom position with respect to the seat.