(under subclass 23) Devices (other than mere closure sealing mechanisms) wherein means is provided to prevent a successful attack upon a safe by means of an explosive. The explosive is normally inserted between the closure and jamb, and the device may either impede the entry, convey the explosive away from the place inserted, or may absorb or release the explosive forces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
75, for mere sealing mechanisms for this and other purposes.
79, for joints and connections peculiarly constructed to stand an explosion or to relieve the pressure of one.