ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,472,612, issued on Nov. 18, was assigned to MAKITA Corp. (Anjo, Japan).
"Electric power tool" was invented by Kiyonobu Yoshikane (Anjo, Japan), Mizuki Yamamoto (Anjo, Japan), Yoshitaka Machida (Anjo, Japan) and Yusuke Takano (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hammer drill includes a boss sleeve rotatably and externally mounted to an intermediate shaft separately from the intermediate shaft. The boss sleeve includes a rod coupled to a rear end of a piston cylinder via a swash bearing. The boss sleeve is configured to rotate to convert a rotation of the intermediate shaft into a reciprocating motion in a front-rear direction of ...