US Patent 9821186 Multifunctional kinetic mechanism

A multifunctional kinetic mechanism includes a base including a slant tube, a counterweight unit including a joint shaft rotatably connected to the slant tube of the base, a barbell shaft having a first end piece connected to the joint shaft and a second end piece opposite to the first end piece and a counterweight attached to the second end piece of the barbell shaft, and an operating bar connected to the second end piece of the barbell shaft. Thus, by multi-directional operation of the joint shaft, a user can operate the operating bar to move the barbell shaft and the counterweight in exercising operational modes of squatting, lunging and arm lifting to train different muscle groups.