ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,111, issued on Dec. 30, was assigned to SHANGHAI SHIFT ELECTRICS Co. LTD. (Shanghai).
"Support structure" was invented by Xiaoguo Dai (Shanghai) and Zhenwu Xu (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A support structure for supporting a drive shaft that performs reciprocating motion in an electric cleaning care appliance. The support structure comprises an inner fixing ring of the support structure, at least one elastic member of the support structure, and an outer fixing ring of the support structure; the inner fixing ring is fastened on the drive shaft; the outer fixing ring is fastened on an inner wall of a lower device housing; t...