US Patent 9132315 Multifunctional arms and wrists trainer

The present invention discloses a multifunctional arms and wrists trainer which is a bar assembled by a shaft and two handles. An interior of the bar is provided with an elastomer formed by a torsion spring or torsion leaf in a shape of ⊖. When two handles are held with two hands of a user and twisted against each other, muscle groups of arms are exercised by torsion resulted from the elastomer when the handles are twisted leftward and rightward. A handle bracket inside the handle can be also connected with a rotating dish which can be used as a roller for exercising abdominal muscles, in addition to being used to exercise the muscle groups of the arms by twisting the rotating dishes at a side.