(under the class definition) Subject matter wherein a holding device is either (a) provided with a driving section which is disconnectable from the holding device when a twisting force in excess of a predetermined limit is applied thereto or (b) yieldably urged into engagement with a cooperating element and moves into a noncooperating position upon the application of excessive torque.
SEE OR SEARCH THIS CLASS, SUBCLASS:
402+, for externally threaded fasteners (e.g., screws and bolts, etc.) having specific head driving structure.
