Patent ID: 7618095

Claim:
A chair ( 1 ) comprising a seat ( 3 ), a backrest ( 2 ) and an armrest ( 6 ), the backrest being movable relative to the seat, the backrest ( 2 ) and the seat ( 3 ) being secured to each other by means of the armrest ( 6 ), the armrest being formed by a hinge consisting of two mutually movable parts ( 7 , 8 ), a first movable part being secured to the seat ( 3 ), a second movable part being secured to the backrest ( 2 ), the two mutually movable parts being configured as an inner ring ( 8 ) and an outer ring ( 7 ) which are disposed concentrically, an outer side of the inner ring engaging an inner side of the outer ring, such that as the backrest moves relative to the seat, the first movable part moves with the backrest, relative to the second movable part secured to the seat.