ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,544,844, issued on Feb. 10, was assigned to RTX Corp. (Farmington, Conn.).
"Thread repair tool" was invented by Zachary Joseph Martinelli (Bristol, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A thread repair tool for rethreading a blind tapped hole having damaged threads above undamaged threads of the hole, including: a shaft having a plurality of curved surfaces that extend from a top end of the shaft to a bottom end of the shaft, the plurality of curved surfaces being concave with respect to an exterior perimeter of the shaft; and wherein the shaft has a plurality of corner portions, each one of the plurality of corner portions being located ...