Patent ID: 7017468

Claim:
A pneumatically actuated pivot device for a component capable of pivoting about a joint and fixed to a structural element, the pneumatically active part comprising: a set of airtight hoses with valves, the airtight hoses being arranged between parts which belong to the structural element or to a pivotal component; wherein the hoses when pressurized, introduce torques into plates; wherein the hoses are connected to at least one web, wherein the at least one web is fixed over its entire length close to the joint causing the hoses to fill only a curved part of a volume of a circular segment with an opening angle α and with the hinged joint at an apex, such that the volume to be pressurized can be minimized; wherein the pneumatically actuated pivot device further includes a locking device with which the hoses unpressurized allow a torque acting on the pivotal component to be transmitted directly to the structural element; and wherein the pneumatically actuated pivot device further includes a valve system, wherein the valve system connects the locking device and the set of hoses in a way such that pressure is admitted to the hoses only when the pivotal component is being moved.