US Patent Issued to MAKITA on March 3 for "Ratchet wrench" (Japanese Inventor)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,564,932, issued on March 3, was assigned to MAKITA Corp. (Anjo, Japan).

"Ratchet wrench" was invented by Ding Zhao (Anjo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electric ratchet wrench as one example of the ratchet wrench includes an electric motor, a holder that rotatably holds a socket via a one-way clutch mechanism, and a spindle configured to convert a driving force from the motor into a reciprocating rotation motion of the holder. A space is provided between the socket and the holder. The space includes large interval portions and small interval portions. The small interval portions are adjacent to the large interval portions in a ...