ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,416, issued on Feb. 10, was assigned to Mueller International LLC (Atlanta).

"Toothed gripper with variable height teeth" was invented by Jason Michael Hackbarth (Chattanooga, Tenn.) and Ryan Fairchild Larson (Decatur, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a gripper comprising a gripper body with an inner surface defining a tooth plane. The gripper includes a front tooth extending from the tooth plane with a front height, a middle tooth extending from the tooth plane with a middle height, and a back tooth extending from the tooth plane with a back height. The front height is equal to the back height, whi...