ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,637, issued on Sept. 30, was assigned to MAKITA Corp. (Anjo, Japan).
"Impact tool" was invented by Tomoro Aoyama (Anjo, Japan) and Takeshi Kamiya (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To reduce size increase, an impact tool includes a motor, a spindle located frontward from the motor, rotatable by the motor, and having a support hole extending rearward from a front end of the spindle, a hammer supported by the spindle, a ball between the spindle and the hammer, and an anvil received in the support hole and strikable by the hammer in a rotation direction. The anvil has a rear end located rearward from the ball."
The patent was...