ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,642, issued on Sept. 29.
"Ratchet wrench" was invented by Pang-Lin Shih (Taichung City, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A ratchet wrench includes a wrench body, a ratchet wheel, a first ring, a pawl member, a direction control unit, a cover, and a snap ring. The wrench body is provided with a first receiving recess, a second receiving recess, two first side faces, a third receiving recess, a fourth receiving recess, a closed end, and two resting faces. The ratchet wheel is provided with a ratchet portion and a mounting portion. The pawl member is provided with an engaging portion, a cavity, a projection, and two second side fa...