ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,084, issued on Nov. 4, was assigned to Koki Holdings Co. Ltd. (Tokyo).
"Working device" was invented by Kengo Tamura (Ibaraki, Japan), Junichi Toukairin (Ibaraki, Japan) and Shota Takeuchi (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a working device, a cover added outside an enclosure portion is used to utilize vibration of the working device during an operation thereof to cool the enclosure portion. The working device has: a motor; a speed reduction mechanism for decelerating rotation of the motor; a striking mechanism; an enclosure portion (main body housing, hammer case 5) accommodating them; and a cover covering at least a p...