US Patent Issued to ROBIT on May 27 for "Drill assembly for percussive drilling, a drill bit and a drill string element" (Finnish Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,866, issued on May 27, was assigned to ROBIT PLC (Lempaala, Finland).

"Drill assembly for percussive drilling, a drill bit and a drill string element" was invented by Mika Koskinen (Tampere, Finland) and Kimmo Ala-Kanto (Tampere, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drill assembly for percussive drilling, includes a drill bit having a downhole portion and an attachment portion having a cylindrical male coupling thread, and a drill string element for transferring impacts from a percussion device to the drill bit and having a female coupling thread for threadedly coupling with the male coupling thread. The drill bit includes a firs...