ALEXANDRIA, Va., July 9 -- United States Patent no. 12,355,304, issued on July 8, was assigned to Mirka Ltd (Jepua, Finland).
"Brushless direct current electric motor and handheld tool" was invented by Tobias Holmqvist (Korsholm, Finland), Simon Back (Vora, Finland) and Tomas Sodergard (Nykarleby, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided be a brushless direct current, BLDC, electric motor. The BLDC electric motor comprises a rotor comprising a rotor shaft and a stator arranged around the rotor shaft. The stator comprises a stator hub comprising electromagnets, and cooling channels extending in a direction that is parallel to a longitudinal direction of the rotor shaft and the ...