ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,597, issued on Nov. 25, was assigned to ZHEJIANG SANHUA COMMERCIAL REFRIGERATION CONTROLS Co. LTD (Zhejiang, China).
"Electric valve" was invented by Minghui Xu (Zhejiang, China) and Hanqi Wu (Zhejiang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an electric valve provided by the present invention, a gear reduction mechanism comprises a first ring gear, a second ring gear as well as an upper planetary gear assembly and a lower planetary gear assembly arranged in the longitudinal direction of the electric valve; at least part of the first ring gear is located in an inner cavity of a rotor member; an input gear part of the rotor member mes...