ALEXANDRIA, Va., March 24 -- United States Patent no. 12,582,993, issued on March 24, was assigned to MAKITA Corp. (Anjo, Japan).
"Electrically-driven stone material crushing tool" was invented by Koichi Yakabe (Anjo, Japan), Hiroki Ikuta (Anjo, Japan) and Toshihito Yabunaka (Anjo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a construction technique of a stone material crushing tool which can prevent complication of working environment. An electrically-driven stone material crushing tool including a motor having an output shaft, a motion converting mechanism to convert a rotating movement from the output shaft to a linear movement, and a crushing member to crush the stone material by clam...