US Patent Issued to JOHNSON ELECTRIC INTERNATIONAL on Sept. 23 for "Electric power tool, motor, and rotor thereof" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,890, issued on Sept. 23, was assigned to JOHNSON ELECTRIC INTERNATIONAL AG (Murten, Switzerland).

"Electric power tool, motor, and rotor thereof" was invented by Quantong Ma (Shenzhen, China), Mingwai Chau (Hong Kong), Allan Madrid (Hong Kong) and Anping Zhao (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a power tool, a motor and a rotor thereof. The rotor includes a housing, a rotating shaft fixed on the housing, a yoke accommodated in the housing, and permanent magnets mounted on the yoke. The housing includes a bottom wall and a sidewall extending from an outer periphery of the bottom wall in an axial dir...