US Patent Issued to ARCHER OILTOOLS AS on March 3 for "Swivel and circulation control valve tool" (Norwegian Inventor)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,817, issued on March 3, was assigned to ARCHER OILTOOLS AS (Stavanger, Norway).

"Swivel and circulation control valve tool" was invented by Atle Loland (Bryne, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A swivel and circulation control valve tool includes an upper mandrel housing telescopingly connected on a telescope rod axially fixed in a lower mandrel housing, all having a through central bore. The telescope rod is provided with axially directed radial spline lugs arranged for, in a first, non-collapsed position, engaging with corresponding axially inwardly directed splines in the upper mandrel housing, for torque transfer to the lower...