ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,968, issued on March 31.
"Dental handpeice" was invented by Kazuyoshi Suzuki (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an air turbine type dental handpiece capable of reducing a generated sound volume. An air turbine 2 is rotationally driven by compressed air that is supplied to the internal space of a housing 11, and the treatment such as cutting of the tooth of a patient is performed by a cutting tool 4. A blade 22 is a toroidal type blade (a blade having a shape in which a first blade portion 221 and a second blade portion 222 are continuous with each other at a bridge portion 224). Therefore, the generation of a l...