ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,416,203, issued on Sept. 16, was assigned to Condon-Johnson & Associates Inc. (Oakland, Calif.).
"Casing driver and method" was invented by Jeremy Condon (Oakland, Calif.) and George Burrough (Oakland, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus and method are provided for using a rotary drive of a drilling rig to drive both the drill stem and the casing simultaneously, by connecting the drill stem to the casing using a drive head. Subsequently, after drilling a first length of bore, the drive head may be removed and the drill stem driven by the rotary drive independently from the casing, allowing the bore to be extended further ...