ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,468, issued on Feb. 3, was assigned to MAKITA Corp. (Anjo, Japan).
"Power tool" was invented by Katsuyuki Niinomi (Anjo, Japan), Takaya Yamada (Anjo, Japan) and Kengo Umemura (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool includes a motor and a housing. The motor includes a rotor rotatable in one direction about a motor rotation axis and including a rotor shaft to which a fan and a commutator are fixed, a stator surrounding the rotor, and a carbon brush in contact with the commutator. The housing supports the stator and includes a cylinder, a bottom connected to the cylinder, a vent in the bottom, and a rib protruding from t...