ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,116, issued on June 10, was assigned to Caterpillar Inc. (Peoria, Ill.).
"Greaseless hydraulic hammer" was invented by Cody Moore (Robinson, Texas), Curtis A. Henning (Dunlap, Ill.) and John Kevin Clemons (Wamego, Kan.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydraulic hammer includes a housing and a plurality of splines. The housing defines a chamber extending along a longitudinal axis configured to receive a tool. The splines are disposed on an inner surface of the chamber and extend parallel to the longitudinal axis. Each of the splines has a contact surface configured to slidably guide the tool when disposed within the chamber. A treated...