ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,272, issued on May 6, was assigned to FOSTER ELECTRIC COMPANY Ltd. (Tokyo).
"Oscillatory actuator" was invented by Ken Yamakami (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An oscillatory actuator 1 includes: an in-case electromagnetic driver 3; a mover 4; and a pair of leaf springs 5a and 5b for supporting the mover 4. The mover 4 includes a magnet 30, pole pieces 31a and 31b paired, and masses 32a and 32b paired. The in-case electromagnetic driver 3 includes coils 21a and 21b paired and a tubular yoke 20 radially outside the coils 21a and 21b, the yoke being made of a soft magnetic material and projecting outward beyond the coils 21a and ...