ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,941, issued on June 30.

"Ratchet wrench" was invented by Yu Zhang (Longyou County, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ratchet wrench includes a wrench body, a ratchet wheel, a first restriction member, a second restriction member, a pawl member, a direction control unit, and a first snap ring. The wrench body has a first receiving recess, a second receiving recess, and a third receiving recess. The ratchet wheel has a ratchet portion, a mounting portion, a first pivot portion, a first annular groove, a second pivot portion, and a rotation portion. The first restriction member has a first resting portion. The second restriction me...