ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,428,906, issued on Sept. 30, was assigned to Ningbo Zhenfei Decorated Curtain Co. Ltd. (Yuyao, China).

"Self-stopping roller blind mechanism with spring integrated in roller shaft and hand-held curtain" was invented by Jiefei Lu (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to the field of curtain technology and discloses a self-stopping roller blind mechanism with spring integrated in roller shaft and a hand-held curtain. The self-stopping roller blind mechanism with spring integrated in roller shaft includes a mounting bracket, a winding device, and a roller shaft connected to the winding device. The winding d...