US Patent Issued to HYTEM on Jan. 28 for "Structure obtained by combining conveyor belt and shutter device, and shutter device" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,208,968, issued on Jan. 28, was assigned to HYTEM Co. LTD. (Kakamigahara, Japan).

"Structure obtained by combining conveyor belt and shutter device, and shutter device" was invented by Katsuhiko Yasuda (Gifu, Japan) and Yoshihito Osada (Gifu, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A shutter device, used to open and close an opening provided in a wall with a conveyor belt extending through the opening, includes a pair of posts, an upper shutter and a lower shutter that are movable up and down between the pair of posts, and a lifting-and-lowering mechanism that includes a feed screw having an upper external thread and a lower external thread...