ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,871, issued on July 15, was assigned to Kormel LLC (Vernon Hills, Ill.).

"Abdominal exercise device with tether assembly for connection to a resistance assembly" was invented by Michael Kordecki (Vernon Hills, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides an exercise device used by a person to perform abdominal exercises, where the device comprises a weighted ball designed such that the user U can "single-hand drive" the ball through both the concentric portion and eccentric portion of the exercise movement without experiencing unwanted twisting motion of the ball while it is being held during performance of the abdomina...