ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,034, issued on Nov. 25, was assigned to Hilti AG (Schaan, Liechtenstein).
"Device for transmitting torque from a drill to a drill bit" was invented by Florian Goetz (Frastanz, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for transmitting a torque produced by a drill to a drill bit includes a shank and a tool fitting. The shank has a first outer conical region, a groove region, and a second outer conical region and has longitudinal grooves. The tool fitting has a basic body which has a rotary driving region with outer rotary driving grooves, an intermediate element which has an inner driver region with inner rotary drivers and an o...