ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,415,259, issued on Sept. 16, was assigned to Black & Decker Inc. (New Britain, Conn.).
"Impact power tool and impact mechanism" was invented by Peter Wadeson (Silver Spring, Md.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rotary impact tool includes a motor and an impact mechanism. The impact mechanism includes a cam shaft with a first cam groove rotatably driven by the motor, a cam ring received over the cam shaft with a second cam groove on its inner surface and a third cam groove on its outer surface, a hammer received over the cam ring with a fourth cam groove on its inner surface, an anvil with an output shaft and configured to be selectively...