US Patent 11534652 Handheld exercise device and method for personal fitness training

A handheld exercise device includes an elongated handle and first and second stability heads. The stability heads are located at opposite ends of the handle, and each has a generally dome-shaped top side and generally planar underside. An arrangement of surface-engaging rollers projects from the planar underside of each stability head. The roller arrangement includes first and second inline rollers substantially aligned with a longitudinal axis of the handle, and a third roller laterally offset from the longitudinal axis of the handle.