Patent ID: 7988605

Claim:
An exercise apparatus comprising: a resistance disk with rotating pressure plates coaxially mounted on either side at a center portion of said resistance disk, said resistance disk is mounted for rotation about a threaded non-rotative spindle; a bushing coaxially mounted in the center portion of said resistance disk for rotation about said non-rotative spindle; a pair of coaxially mounted non-rotative brake disks of a tension assembly, in constant frictional contact with said rotating pressure plates, said non-rotative brake disks mounted on either side of said resistance disk for retarding the rotation of said resistance disk; means for varying pressure applied to said non-rotative brake disks in frictional contact with said rotating pressure plates; a washer of the tension assembly, coaxially mounted around said non-rotative spindle and on an underside of a tension knob; a compression spring of the tension assembly, that is coaxially mounted around said non-rotative spindle, and between said tension knob and a top brake disk; engaging means, situated around a periphery of said resistance disk, comprising a gear; a channel situated around the periphery of said resistance disk; a flexible cable, which temporarily rests along an inside of said channel on the periphery of said resistance disk that is used for rotation of said resistance disk in response to the pulling movement of said cable in an advanced direction by a user; means for coupling said cable to the periphery of said resistance disk comprising a pawl, upon a start of pulling against said cable in order to rotate said resistance disk in the advanced direction, and for uncoupling said cable from the periphery of said resistance disk upon completion of pulling against said cable; a small compression spring depressed by the pivoting motion of said pawl engaging said gear upon pulling against said cable in the advanced direction, then upon the completion of pulling against said cable, said depressed small compression spring expands outward urging said pawl to pivot and disengage said gear; and a rewind arm mounted to pivot about said non-rotative spindle, and fastened to a coil spring preloaded with built up tension, that forces said rewind arm and disengaged pawl to rewind and pull said cable from an advanced position back to a retracted position within said channel on the periphery of said resistance disk when stopped, said built up tension in said coil spring is from preceding rotation of said resistance disk and said rewind arm rotating in unison in the advanced direction in response to the pulling movement of said cable by the user.