ALEXANDRIA, Va., March 5 -- United States Patent no. 12,239,872, issued on March 4, was assigned to iFIT Inc. (Logan, Utah).

"Safety mechanism for an adjustable dumbbell" was invented by Kent M. Smith (Nibley, Utah).

According to the abstract* released by the U.S. Patent & Trademark Office: "An adjustable kettlebell includes a cradle safety mechanism and a kettlebell safety mechanism. The cradle safety mechanism includes a position sensor that detects whether the kettlebell is in the cradled position and prevents a motor from rotating to change the weight of the kettlebell if the kettlebell is in the uncradled position. The kettlebell safety mechanism includes a dial retractable into the handle of the kettlebell. When the dial is retracte...