ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,738, issued on March 25, was assigned to ESCO GROUP LLC (Portland, Ore.).

"Wear element having a lock including a pin and seal" was invented by Bruce C. Bingham (West Linn, Ore.), Michael B. Roska (Portland, Ore.), Darrin Harding (Newberg, Ore.), Mark T. Beatley (Saint Helens, Ore.) and Cornelius J. Brockman (Swakopmund, Namibia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A lock that includes a pin and a collar. At least one of the pin and collar include a circular seal and a recess to store the seal. When the pin and collar are engaged in a locking manner, the surfaces of the pin and collar compress the seal such that a barrier is formed to lim...