ALEXANDRIA, Va., June 16 -- United States Patent no. 12,654,996, issued on June 16, was assigned to Otis Elevator Co. (Farmington, Conn.).

"Automatic conveying device, method for determining the presence of external objects, and automatic start method" was invented by Wentong Liu (Hangzhou, China), Lifei Cheng (Hangzhou, China) and Zhaoxia Hu (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "An automatic conveying device, a method for determining the presence of an external object, and an automatic start method. The automatic conveying device includes a first end and a second end opposite to each other; and a middle section between the first end and the second end; the automatic conveying devic...