ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,317, issued on Feb. 17, was assigned to Kazuyoshi Suzuki (Chiba, Japan).
"Dental handpiece" was invented by Kazuyoshi Suzuki (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wall portion of a dental handpiece accommodates a cam pin 111 with a cam hole 21 or a cam groove 211 designed so that the size of the cam hole 21 or the cam groove 211 is larger than the size of the cam pin 111 in each of the axial direction and the circumferential direction of a vibration cylinder 20. Therefore, a rotating member 110 is rotationally driven, and a vibrating force acts on the vibration cylinder 20 in the axial direction through the cam pin 111. In t...