ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,597, issued on Dec. 9, was assigned to Center Rock Inc. (Berlin, Pa.).
"Air rotary system for a down hole drill assembly" was invented by Daniel J. Reed (Alum Bank, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drill assembly is provided having a main housing. A tool mount housing is rotatably engaged to the main housing. An air motor is mounted within the main housing and includes an air motor drive shaft. The air motor drive shaft has an upper sun gear attached to it. The air motor drive shaft and upper sun gear are positioned within a first stage ring gear within the main housing. A second stage ring gear is similarly positioned within the ...