ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,897, issued on Oct. 28, was assigned to MAKITA Corp. (Anjo, Japan).
"Power tool" was invented by Akira Naito (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power tool is less likely to generate noise. A power tool includes a housing, a field fixed to the housing and including a field coil, an armature rotatable relative to the field and including a commutator, two brushes that come in contact with the commutator, and a brush holder unit holding the two brushes. The brush holder unit includes two contact rails electrically connectable to the field coil, two first terminals that each come in contact with either of the two contact rails,...