ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,796, issued on Sept. 8, was assigned to TDW Delaware Inc. (Wilmington, Del.).
"Single or multi-durometer elastomer, self-actuating, dynamic, stress suppressor for hot tapping tools" was invented by Roger L. Poe (Beggs, Okla.), Jon Maslen (Sand Springs, Okla.), Qi Li (Houston) and Kolton Landreth (Jenks, Okla.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of a plugging tool (10) of this disclosure a control bar head (20) and at least one sealing head (30, 40) pivotally connected to the control bar head, the control bar head including a stress suppressor (50) located at a lower end (25) of the control bar head, the stress suppressor inclu...