Abstract: A radiant resistant closure assembly is described for joining a door and its frame including a resilient contact retained in position by a holding plate attached to the frame of the door. The contact extends into a slot along the edge of the frame and receives a blade-like rigid contact mounted to the door. The door is closed in a manner whereby the rigid contact blade-like member enters into the slot, is frictionally engaged by the resilient finger contact, and is held in position. For insuring further radiation resistance, an RF shielding mesh may be placed down in the bottom of the slot. The resilient contact encountered by the blade may include two offset bowed finger-like members, the second being retained on the opposite side of the slot from the first by means of a retaining clip friction fitted into the slot itself.

Abstract: A door closure mechanism provided with a frame and a door adapted to be closed into the frame in a manner so as to provide RF shielding. The door is provided with a closure mechanism having a motor-driven threaded shaft mounted on a floating platform adapted to have several degrees of freedom with respect to the plane defined by the door. The frame includes a threaded receptacle adapted to receive the threaded shaft. Electrical switches are provided with respect to the door such that the threaded shaft will rotate uon reaching proximity with the threaded receptacle, thereby securing the door to the frame.