schubumkehrvorrichtung, also in case of damage against accidental opening is secured

摘要

The system consists of a fixed structure (2) and a series of apertures (10) closed by hinged flaps (11). The flaps are held in the closed position by locks (25), each with a bolt (27) engaging with the free end (36) of a bracket (35) fixed to the flap. The assembly incorporates a hook (45) formed by the fixed structure and lock and fitting round the free end of the bracket when the flap is closed. The hook has an aperture (50) through which the bracket end passes as the flap is closed, the aperture being covered by the bolt (27) of the lock to retain the bracket and hold the flap shut. The lock is self-actuating, and the bottom of the hook is situated at the end of the travel of the bracket.