ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,587, issued on Sept. 30, was assigned to Robert Bosch GmbH (Stuttgart, Germany).
"Wood drill" was invented by Stefan Christen (Langendorf, Switzerland) and Lorenz Kaeser (Ruttenen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wood drill includes a clamping portion for connecting, for conjoint rotation, to a tool fitting of a portable power tool, and a head portion which is provided with a centering geometry. The clamping portion is formed at a first end, remote from a workpiece, and the head portion is formed at a second end, close to a workpiece, of the wood drill. The clamping portion is connected to the head portion via a shank p...