ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,214, issued on April 7, was assigned to Shenzhen Future Atom Tree Technology Co. Ltd. (Shenzhen, China).

"Double-eccentric-wheel-driven massager with replaceable coplanar massage heads" was invented by Tiansheng Yang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A double-eccentric-wheel-driven massager with replaceable coplanar massage heads includes: a housing including an upper cover and a lower cover; a drive mechanism disposed in the housing and provided with a drive shaft; centrosymmetrical connecting rods, where the centrosymmetrical connecting rods each include an input portion at a middle and symmetrical vertical rods exten...