ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,872, issued on June 23, was assigned to NINGBO SUNFREE MOTOR TECHNOLOGY COMPANY Ltd. (Ningbo City, China).
"Electric curtain" was invented by Chun Jiang (Ningbo City, China) and Baoguo Tan (Ningbo City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric curtain is provided which comprises a top rail, a bottom bar, a curtain body, a rope winding assembly, a drive device and an end seal; the top rail and the bottom bar are disposed in parallel up and down with the curtain body in between; the top rail is provided with opposed first end and second end; the end seal is disposed at the first end of the top rail and the drive device at the s...