Exercise ball with axle

Abstract

In one aspect of various exemplary embodiments, an exercise device comprising: an axial structure defining an axis of rotation; a user support structure rotatably coupled to the axial structure; and a ball member supported by the axial structure and disposed with radial symmetry corresponding points along the axis of rotation. Thus, the ball member may be substantially spherical in shape, elliptical, oblong, etc.

What is claimed is: 
     
         1 . An exercise device comprising:
 an axial structure defining an axis of rotation;   a user support structure rotatably coupled to the axial structure; and   a ball member supported by the axial structure and disposed with radial symmetry about the axis of rotation, the ball member having a varying circumferential distance at corresponding points along the axis of rotation.   
     
     
         2 . The exercise device of  claim 1 , wherein the ball member is an ellipsoid or substantially spherical. 
     
     
         3 . The exercise device of  claim 1 , wherein the ball member is substantially rigid. 
     
     
         4 . The exercise device of  claim 1 , wherein the axial structure comprises at least one axial bearing affixed to the ball member and the user support structure comprises a rigid axle passing through the at least one axial bearing. 
     
     
         5 . The exercise device of  claim 1 , wherein the user support structure comprises an axle with at least a first element and second element whereby when decoupled the at least first element and second element reduce a total length of the axle. 
     
     
         6 . The exercise device of  claim 1 , wherein the axial structure comprises an axle affixed to the ball member and the user support structure comprises handles. 
     
     
         7 . The exercise device of  claim 1 , wherein the user support structure comprises at least one foot strap and at least one heel strap. 
     
     
         8 . The exercise device of  claim 1 , wherein the axial structure comprises two concentric cylinders formed in opposite walls of the ball member. 
     
     
         9 . An exercise device comprising:
 a ball that is substantially spherical in shape and substantially rigid;   an axis of rotation that substantially passes through the center of the ball;   an axle coinciding with the axis of rotation and being able to support the weight of a user performing exercises thereupon; and   at least one mounting member freely coupled to the axle, whereby the at least one mounting member allows the axle to rotate.   
     
     
         10 . The exercise device of  claim 9 , wherein the axle further comprises a first protrusion and a second protrusion beyond the outer surface of the ball. 
     
     
         11 . The exercise device of  claim 9 , wherein the axle further comprises a hollow cylindrical tube, whereby the hollow cylindrical tube ends substantially coincide with the outer surface of the ball, are joined to the ball, and within which the mounting member is housed and being sufficiently longer than the hollow cylindrical tube so the mounting member protrudes evenly from either side of the ball. 
     
     
         12 . The exercise device of  claim 9 , wherein the ball can rotate about the axle with at least one full rotation. 
     
     
         13 . The exercise device of  claim 9 , wherein the at least one mounting member comprises a foot strap and a heel strap. 
     
     
         14 . The exercise device of  claim 9 , wherein the at least one mounting member comprises a balance board. 
     
     
         15 . The exercise device of  claim 9 , wherein the mounting member comprises an axle with at least a first element and second element whereby when decoupled from the ball, the at least first element and second element reduce a total length of the axle.