ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,204, issued on Feb. 3, was assigned to Braun GmbH (Kronberg, Germany).
"Personal care device" was invented by Tobias Schwarz (Schmitten, Germany), Julius Hoppert (Kronberg, Germany), Riccardo Dessi (Frankfurt, Germany) and Christian Ellsaesser (Kelkheim, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A personal care device, such as an electric toothbrush, has a handle having a longitudinal axis and a treatment head connected to a carrier. The carrier extends within the handle and is mounted at the handle for pivoting motion around a pivot axis against a restoring spring force. A drive unit, such as a linear actuator, is mounted on the carrier...