Patent ID: 8888184

Claim:
A tilting device for a chair, the chair comprising a base with a gas spring that extends vertically in upward direction and further comprising a seat plate, the tilting device arranged between the base and the seat plate, the tilting device comprising: an elastic body having a bottom side and a top side, wherein said bottom side and said top side are parallel to each other and wherein said bottom side and said top side extend substantially horizontally in a horizontal direction relative to a vertical center axis of said elastic body; a first rigid plate having a first plate section that is connected to said bottom side and that extends substantially horizontally; a second rigid plate having a second plate section that is connected to said top side and that extends parallel to said first plate section, wherein said elastic body is axially sandwiched between said first and second plate sections; said first rigid plate having a bulge extending vertically in upward direction, wherein said bulge is configured to be pushed onto an upper end of the gas spring to secure the tilting device on the gas spring; said second rigid plate configured to directly attach to the seat plate.