Arbor for mounting tools in a chuck

Abstract

The disclosure concerns an arbor for securing a tool, or other rotating device to a chuck of a drill or the like. The arbor comprises a stamped member folded to have an upper wall with an opening therein to receive a screw in order to secure the tool to the upper wall, and side wings from opposite sides of the upper wall are bent down toward each other. The portions of the wings adjacent the upper wall are flat for being grasped by a tool, like a wrench. The upper portions of the wings further from the upper wall are curved to receive and guide the shaft of an inserted tool fastening screw. The lower portions of the wings shaped so that they meet each other along the lateral edges and so that they provide a chuck engaging member of hexagonal cross-section. The upper wall is cambered for driving the lower portions of wings together as the tool is tightened onto the arbor.

Dependencies are inferred from the claim text.