Patent ID: 7316404

Claim:
A drill/driver chuck including: cylindrical member having a central axis bore and a plurality of further bores such that the plurality of further bores are slanted with respect to the axis of the cylindrical member; a plurality of jaws, each jaw being associated with a respective one of the further bores and moveable therewith; a conical jaw actuator, coupled to each of the jaws of the plurality, for moving the jaws within their respective further bores, the jaw actuator having a conical shape with walls of the cone having a plurality of slots formed therein such that each slot co-operates with a respective one of the plurality of jaws and wherein movement of the conical jaw actuator is non-rotational in a direction along the axis of the cylindrical member which causes concomitant movement of the jaws within their respective slots in a radial direction with respect to the axis of the cylindrical member; and an activation element, said activation element non-rotatably movable along the longitudinal axis for applying movement force to said conical jaw actuator so that no rotational movement occurs in said activation element relative to said cylindrical member, plurality of jaws and conical jaw actuator during transitional movement of said plurality of jaws along the axis.