US Patent 10569120 Weight-balanced exercise apparatuses and methods of using same

A weight-balanced apparatus, comprising: a main body shaped substantially like a hollow sphere with spherical caps removed in a same central axis of the body to create two opposing openings sized to account for the natural motion of a user's arm during exercise and where the main body is balanced in each of at least three dimensions from a center point of the sphere, wherein each of the two opposing openings have a continuous, rotationally symmetric beveled edge around the opening; and, a hand hold traversing centrally through the hollow of the spherical main body through the center point and transverse to the central axis.