US Patent Issued to EPIROC ROCK DRILLS AKTIEBOLAG on June 16 for "Method and system for detecting a state of a joint of a drill string" (Swedish Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,655,744, issued on June 16, was assigned to EPIROC ROCK DRILLS AKTIEBOLAG (Orebro, Sweden).

"Method and system for detecting a state of a joint of a drill string" was invented by Mattias Gothberg (Orebro, Sweden) and Samuel Enblom (Orebro, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for determining state of at least one joint of a drill string of a drill rig, the drill rig including a percussion device for inducing shock waves into the drill string, and a sensor for sensing stress waves in the drill string caused by impacts of the percussive device, the method comprising, when a stress wave is induced ...