US Patent 10449404 Exercise apparatus

An exercise apparatus includes first, second, third and fourth elongated frame members respectively defining a first, second, third, and fourth frame portion each comprising interior and exterior perimeters. The first frame member can include first, second, third, and fourth segments. The first frame portion can encompass first and second open interior regions. The third frame member can adjoin the first frame member at spaced first and second points on the first frame member and span from the first point to the second point. The fourth frame member can adjoin the first frame member at spaced third and fourth points on the first frame member and span from the third point to the fourth point.