ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,721,249, issued on Sept. 1.
"Ripper shank, shank holder, and ground engaging implement for using the same" was invented by Theodore H. Corriher (Terrell, N.C.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An attachment for an industrial or farm vehicle is designed to engage, carry, cut, disturb and/or level dirt at a ground surface, such as a box blade, rake or bucket. Ripper shanks may be adjustably mounted to the attachment, so that a depth of loosening of the ground surface may be controlled. Each ripper shank includes a generally flat metal plate having a rectangular portion, a curved portion, and a triangular portion. A dirt lifting slide is attac...