ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,157, issued on Feb. 10, was assigned to Xiaolong Technology (Shenzhen) Co. Ltd. (Shenzhen, China).
"Pet movable door and cat litter box" was invented by Peixin Xiao (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pet movable door and a cat litter box. The pet movable door includes: a door panel, a clutch structure, and a drive unit. The drive unit is connected to the door panel in a transmission manner via the clutch structure, so as to drive the door panel to move in a predetermined direction. The clutch structure is configured to separate from each other when a force acting in a direction opposite to the predetermined direction ...