Patent ID: 8182401

Claim:
An exercise device, for placement on a horizontal support surface, the exercise device comprising: a platform base member to support the exercise device on the horizontal support surface, the platform base member comprising a generally flat, horizontally oriented plate; a cylindrical housing coupled to the platform base member in an orthogonal orientation with respect to the horizontally oriented plate; an internal spring assembly within the cylindrical housing, the internal spring assembly comprising: a piston-and-cylinder shock absorber; a coil spring surrounding the piston-and-cylinder shock absorber; an internal assembly base mechanically coupled to a through-bolt end of the piston-and-cylinder shock absorber and to the platform base member; and a coil spring cap threadably coupled to a threaded piston shaft component of the piston-and-cylinder shock absorber to retain components of the internal spring assembly; and an impact block mechanically coupled to the internal spring assembly to receive an impact force imparted by a mass exerted by an exercise device user during a physical exercise workout session.