US Patent Issued to CACTUS WELLHEAD on June 24 for "Isolation sleeve" (Texas Inventors)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,703, issued on June 24, was assigned to CACTUS WELLHEAD LLC (Houston).

"Isolation sleeve" was invented by Martin Anthony Trumbull (Hockley, Texas) and Thomas Henry Holtkamp (Friendswood, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An isolation sleeve for a wellbore includes a sleeve body and a torque sleeve. The torque sleeve threadedly couples to the sleeve body. The torque sleeve includes a compression shoulder. The isolation sleeve includes a compression seal positioned about the torque sleeve between the compression shoulder and the sleeve body. The isolation sleeve also includes a lock ring coupled to the sleeve body that engages a pac...