Seating furniture i.e. swivel chair, has additional support point that is locked in operating position and arranged in or above support point plane in idle position and below plane in operating position

摘要

The furniture (1) has an upper part (3) including a seat surface (4) and fastened to a base part (2). The base part has three support points (9) that are spaced apart from each other in different directions in a support point plane (10). The base part is supported on the support points at the ground. An adjustable additional support point (12) is provided between an idle position and an operating position at the base part. The additional support point is locked in the operating position, and is arranged in or above the plane in the idle position and below the plane in the operating position.