US Patent Issued to HUNAN SINOBOOM INTELLIGENT EQUIPMENT on May 27 for "Control method for controlling retraction of boom, mechanical device and storage medium" (Chinese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,219, issued on May 27, was assigned to HUNAN SINOBOOM INTELLIGENT EQUIPMENT Co. LTD. (Changsha, China).

"Control method for controlling retraction of boom, mechanical device and storage medium" was invented by Junhui Zou (Changsha, China), Guoliang Liu (Changsha, China) and Wei Shi (Changsha, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A control method for controlling retraction of a boom is applied to a hydraulic system which combines retraction of the boom by self-weight with retraction of the boom by pressure. The control method includes: when the boom is retracted, controlling the self-weight retraction proportional valve to be at a max...