Patent ID: 7909289

Claim:
A system for opening and closing a structural part arranged on a support structure, the system comprising: at least one hinged joint device for flexibly connecting the structural part to the support structure; the at least one hinged joint device being arranged inside the support structure and having an axis of rotation about which the structural part can be pivoted relative to the support structure during opening and closing; and a locking arrangement structured and arranged to connect the structural part to the support structure in a form-locking manner when the structural part is in a closed position, in the closed position, the locking arrangement being arranged inside the support structure and is arranged to relieve the at least one hinged joint device; the locking arrangement comprising a chain or belt arrangement structured and arranged to lock a first flange of the structural part to a second flange of the support structure; and a tightening mechanism for radially expanding and contracting the chain or belt arrangement, wherein the tightening mechanism comprises an inflatable hose arranged between clamp elements and a contact surface which is spaced from the clamping elements.