Lock with bolt element movable between locked and unlocked condition for door

摘要

The bolt element (2,3) of the lock is retained in its locked position by a stop unit (16, 17), so that the bolt element then moves to the released condition, due to the preloading force.The preloading unit (10, 11) is operable manually, pref. by means of a push button or a key, in order that the lock is brought to the preloaded condition. The preloading unit has an operating unit which brings in automatically in to a preloaded condition with the closing of the door.