ALEXANDRIA, Va., March 31 -- United States Patent no. 12,588,745, issued on March 31, was assigned to Shenzhen Fenda Technology Co. Ltd. (Shenzhen, China).

"Roller structure with adjustable diameter and hair-tangling prevention function, and hair curler thereof" was invented by Mianjia Wei (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a roller structure with an adjustable diameter and a hair-tangling prevention function, including an end support and at least two heat conduction plates, where the end support is connected to end parts of the heat conduction plates, and a plurality of the heat conduction plates can be all moved radially relative to the end support in a radial dire...