Patent ID: 7892154

Claim:
An ankle exercising device for rehabilitating lower leg muscles, said ankle exercising device comprising: a base member having a planar bottom surface with an annular shape, further comprising: a rectilinear center post spanning across a diameter of said base member, a friction pad attached thereto a bottom surface thereof, and, a plurality of base anchoring apertures, wherein said rectilinear center post provides additional structural rigidity thereto said base member; a plurality of outer adjustable hydraulic cylinders adaptable along an orbital direction and directly coupled to said base member in such a manner that top ends of said plurality of outer hydraulic cylinders converge upwardly towards a center of said base member; an adjustable footrest assembly supported above said base member and operably engaged with said plurality of outer hydraulic cylinders; an outer attaching means for attaching said plurality of outer hydraulic cylinders to said footrest assembly and said base member; a center hydraulic cylinder adaptable along a central vertical axis and directly coupled to said base member, wherein said center hydraulic cylinder further comprises: a center shaft resiliently compressible along a linear path extending downwardly from said footrest assembly, an upper center ball end joint having a downwardly extending upper shaft coupled to said center shaft, an external center resistance adjustment mated to said center shaft, a post bracket anchored to said center post, having a vertically upstanding lower support post thereby connecting said center hydraulic cylinder to said base member, and, an internal compression spring providing an upward pressure thereto said footrest portion, wherein said external center resistance adjustment includes a cylindrical center collar located along an external surface of a center hydraulic cylinder body for adjusting a tension of said center hydraulic cylinder body; a platform assembly removably attachable thereto said base member, wherein said plurality of base anchoring apertures provides a base attachment means thereto said platform assembly therewith a plurality of fastening means; and, a stabilizing handle removably attachable thereto said platform assembly and extending upwardly therefrom; wherein each of said plurality of outer hydraulic cylinders are independently compressible along a linear path based upon an external force exerted by the user during movement along the orbital direction.