ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,649, issued on April 7, was assigned to MILWAUKEE ELECTRIC TOOL Corp. (Brookfield, Wis.).

"Tool bit" was invented by Matthew J. Fiddes (Milwaukee), Benjamin L. Miller (Milwaukee), James J. Van Essen (Hales Corners, Wis.) and Evan H. Fischer (Milwaukee).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tool bit including a drive portion having a first maximum outer dimension, a tip having a second maximum outer dimension, a shank extending between the drive portion and the tip, and a sleeve. The shank has a third maximum outer dimension that is less than first and second maximum outer dimensions. The sleeve extends from the drive portion to the tip and...