US Patent 9364768 Flying disk with removable trampoline portion

A flying disk toy includes an annular inner ring centered on the axis and connected with an outer ring, and a flexible material secured to the inner ring and creating a trampoline surface. The inner ring is detachably received in a groove in the outer ring. The groove has an undercut, and the inner ring has a portion including relatively movable flanges that engage in the undercut in the groove to resist removal of the inner ring from the groove.