Patent ID: 8025335

Claim:
A chair comprising: a seat, a base support and a backrest, wherein the seat is pivotably mounted on the base support and the backrest is pivotably mounted on the seat; a first spring system provided between the base support and the seat, and a second spring system provided between the seat and the backrest; wherein the pivoting movement of the backrest in relation to the seat is separate from the pivoting movement of the seat in relation to the base support; first and second adjusting means for respectively adjusting a spring behavior of the first and second spring systems so that the pivotability of the seat in relation to the base support and the pivotability of the backrest in relation to the seat can be adapted to different requirements, said first adjusting means for adjusting the spring behavior of the first spring system and said second adjusting means for adjusting the spring behavior of the second spring system being coupled together in such a way that an adjustment of the spring behavior of one of the first and second spring systems automatically effects adjustment of the spring behavior of the other of the first and second spring systems; and wherein the seat is pivotable about a first articulation axis in the region of the front end of the seat and the backrest is pivotable about a second articulation axis in the region of the rear end of the seat, with the two articulation axes being arranged so as to be displaceable relative to one another.