ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,614, issued on July 21, was assigned to GEBR. REINFURT GMBH & Co. KG (Rimpar, Germany).
"Dental handpiece and axial groove ball bearing" was invented by Daniel Armani (Marktheidenfeld, Germany), Herbert Niedermeier (Poppenhausen, Germany) and Marcel Von Der Gonna (Marktheidenfeld, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The dental handpiece consists of a housing with a handle and a turbine that can be operated with compressed gas or compressed air. The rotational movement of the turbine driven by compressed gas is transmitted to the dental tool via a rotor shaft and a chuck. The rotor shaft is rotatably supported by at least one axial...