Aeris Gmbh

Thomas Hermann Schröder

Josef Glöckl

Joint arrangement () has a hollow cylindrical receiving cylinder () that extends in a cylinder axis direction (Z) and receives one end of a chair column () of an active-dynamic wobble chair, the latter movably mounted in a substantially hollow cylindrical outer joint shell () composed of joint shell segments (). Movable mounting of receiving cylinder () is achieved by deformable elastic elements () arranged to be variable in shape and position in a bearing gap () between an outer wall portion () of the receiving cylinder () and an inner wall portion () of the joint shell (). Receiving cylinder () is actuated in a force-dependent manner, whereby shape and/or position of the elastic elements () change as viewed in a radial direction (Rs) from changing, preferably reducing, clearance of the bearing gap () when the receiving cylinder () is actuated in a cylinder axis direction (Z).

Chair and joint system for a chair or a seating apparatus

The invention relates to an active dynamic stool comprising the following: a seat part, a three-dimensional articulation system made up of at least three legs with foot parts at the lower end thereof, wherein the legs each have their upper end mounted on the seat part for movement on seat-part-mounted connecting articulations, such that the seat part can execute oscillating and circular movements in respect of its non-deflected rest position.

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Beaumont, TX, United States of America

Thomas Hermann Schröder