Patent ID: 7566050

Claim:
A rotary shock absorber coupled on an axle and between a disc brake rotor and a rotatable wheel, for providing suspension to a vehicle or other rolling equipment, the rotary shock absorber comprising an air-tight hollow disc structure filled with lubricant, the disc structure having a central circular opening, a sealing plate coupled to and sealing the central circular opening on one side and a sealing boot portion coupled to and sealing the central circular opening on the other side, and a circular hub portion nesting smoothly and snugly inside the hollow disc structure, the hub portion having six circular through holes, two identical helical springs nested firmly inside each of the six circular through holes, six lug bolts each having two threaded ends and a smooth body, each of the six lug bolts coupled rigidly and perpendicularly at the center of each of the two corresponding helical springs and secured on both ends at each side of the hollow disc structure.