ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,850, issued on May 12, was assigned to DAIFUKU Co. LTD. (Osaka, Japan).

"Traveling vehicle and transfer system" was invented by Yasushi Morikawa (Shiga, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a ceiling traveling vehicle that travels on a track including a pair of travel rails and including an upper guide rail in a branching portion, the traveling vehicle including: a body portion; a pair of travel wheels each configured to roll on a corresponding one of the travel rails; an upper guide roller configured to roll in contact with the upper guide rail; and a cam configured to adjust a position of the upper guide roller in a righ...