ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,528,222, issued on Jan. 20, was assigned to MAKITA Corp. (Anjo, Japan).
"Working machine" was invented by Shunsuke Yamanishi (Anjo, Japan) and Sho Tsuda (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A working machine may include a rotary blade, an output shaft, a prime mover, a working machine body, a blade cover, and a cover retainment mechanism rotatably supporting the blade cover about a cover rotation axis. The cover retainment mechanism may include a first member including a first cylindrical portion enclosing the output shaft, an outer thread defined in an outer circumferential surface of the first cylindrical portion, and a first co...