US Patent 9504869 Syn rings for dynamic weight suspension

A suspension apparatus including first and second rings, each ring having an inner periphery with an inner radius greater than the outer radius of a standard barbell bar; a coupler secured to the outer periphery of each ring; a strap; and first and second fasteners secured to opposite ends of the strap. The strap is inserted through an opening in a barbell weight and secured to the rings. In the best mode, the rings are metallic, the strap is nylon and the coupler is attached to an elastic ring secured to the outer periphery of a respective one of the rings, whereby the weight is free to swing about a point between the rings on the bar over an angle as well as up and down.