ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,770, issued on Nov. 18, was assigned to Gree Electric Appliances Inc. of Zhuhai (Guangdong, China).
"Automatic door opening and closing mechanism and refrigerator" was invented by Aoxiang Zhang (Guangdong, China), Shanshan Huang (Guangdong, China), Zhe Sun (Guangdong, China) and Jinchao Yan (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic door opening and closing mechanism and a refrigerator. The automatic door opening and closing mechanism includes a power assembly, configured to provide a driving force; a driving gear, being drivingly connected to the power assembly and provided with a first meshing tooth; a driven gea...