ALEXANDRIA, Va., June 9 -- United States Patent no. 12,287,603, issued on April 29, was assigned to Canon K.K. (Tokyo).
"Drum unit, cartridge and coupling member" was invented by Tetsuo Uesugi (Suntou-gun, Japan), Makoto Hayashida (Namazu, Japan), Koji Yamaguchi (Namazu, Japan) and Takashi Yano (Mishima, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cartridge includes a coupling positioned at an end of a photosensitive drum, with the coupling including (i) a cylindrical main body positioned coaxially with the photosensitive drum and open to outside of the cartridge and (ii) a projection positioned in the cylindrical main body. The projection is movable relative to the cylindrical main body between a...