ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,554,094, issued on Feb. 17, was assigned to Kowa Co. Ltd. (Nagoya, Japan).
"Lens barrel and knob falling-off prevention member" was invented by Jun Takayama (Soka, Japan) and Syuichi Tominaga (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "According to one or more embodiments of the disclosure, a lens barrel includes an operation member and a knob. The operation member is disposed to be rotatable in a circumferential direction with respect to a lens barrel body. The knob is restricting and fixing rotation of the operation member in the circumferential direction. The lens barrel further includes a knob falling-off prevention member capable ...