US Patent Issued to Hunan Sinoboom Intelligent Equipment on Dec. 16 for "Protective apparatus and aerial work device" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,813, issued on Dec. 16, was assigned to Hunan Sinoboom Intelligent Equipment Co. Ltd (Changsha, China).

"Protective apparatus and aerial work device" was invented by Xiping Li (Hunan, China), Guoliang Liu (Hunan, China) and Jiping Zheng (Hunan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A protective apparatus and an aerial work device are disclosed. The protective apparatus comprises a bracket (1) and a cover (2); the upper side of the cover (2) is hinged to the upper side of the bracket (1); the protective apparatus further comprises a pull-down apparatus (4); the pull-down apparatus (4) comprises a fixed pulley (403), a movable pulley (4...