Patent ID: 8376914

Claim:
An aquatic exercise device for providing some degree of buoyancy to a user when in water, comprising: a body made of foam, wherein the body extends 360° about an axis and at least partially defines a central aperture that extends through the axis, wherein the body has an inner half that has an outer surface that is oriented generally towards the central aperture, wherein the body has an outer half that has an outer surface that is oriented generally away from the central aperture, wherein the outer surface of the outer half of the body is convex in shape; and a ledge that extends from the inner half of the body, wherein the ledge has an upper surface that at least partially defines the central aperture, wherein the upper surface of the ledge is closer to the axis than any portion of the body in a radial direction, and wherein the upper surface of the ledge is configured to receive a foot of the user such that a first portion of the foot of the user is configured to be located forwardly in an axial direction beyond the body and the ledge, wherein the upper surface of the ledge has a first terminal end located at the inner half and extends to a second terminal end located at a different location at the inner half, wherein the ledge has a side wall that is solid across an entire surface of the side wall that extends from the inner half to the upper surface along an entire arc length from the first terminal end located at the inner half to the second terminal end located at the different location at the inner half.