A medical examination chair is used to seat a patient and move the patient
along three essentially-perpendicular planes over a wide range. The chair
includes a primary arc which is connected to a stationary column by a
horizontal shaft, forming a first axis of rotation. A second axis of
rotation, which is essentially perpendicular to the first, passes through
first and second ends of the primary arc. The chair also includes a
secondary arc which is equipped with a seat and which is disposed inside
the primary arc. Third and fourth ends of the secondary arc are connected
to the first and second ends of the primary arc by an upper shaft and a
lower shaft. The primary and secondary arcs can rotate around the first
and second axes of rotation respectively. The medical examination chair
further includes braking elements for suddenly stopping the rotational
movement.