US Patent 7153248 Adjustment assembly for a universal exercising machine

An adjustment assembly for a universal exercising machine includes two blocks respectively adapted to have resilient rods to be mounted thereon and being movable relative to the frame and each block having a first pathway and a second pathway to respectively allow extension of an adjustment device and a securing bolt and nut combination and two adjustment disks to sandwich therebetween the two blocks. Each adjustment disk has two sets of openings respectively defined in two opposed sides of the adjustment disk and two passages respectively provided to communicate with one set of openings. Each opening has a dimension larger than that of the passage so that when the adjustment device is selectively received in the passage, the blocks are able to be moved relative to the frame.