Swivel axle bracket of a truck for a skateboard

Abstract

A truck assembly includes a housing including an annular groove member in an underside; an axle bracket including an upper annular groove at an intermediate portion; a coil spring disposed in both the annular groove member and the upper annular groove and including a smaller first end fastened in the annular groove member, and a smaller second end fastened in the upper annular groove; a mounting pin; a first bearing; a second bearing; and a hollow spacer. The mounting pin is driven through the housing, the first bearing, the axle bracket, the second bearing, and the hollow spacer to be secured to a nut so that the axle bracket is configured to swivel to twist the coil spring, and in response to the twisting is stopped, the energized coil spring releases energy to turn the axle bracket to an inoperative position.

What is claimed is: 
     
         1 . A truck assembly, comprising:
 a housing including an annular groove member in an underside;   an axle bracket including an upper annular groove at an intermediate portion;   a coil spring disposed in both the annular groove member and the upper annular groove wherein the coil spring includes a smaller first end fastened in the annular groove member, and a smaller second end fastened in the upper annular groove;   a mounting pin;   a first bearing;   a second bearing;   a hollow spacer; and   a nut;   wherein the mounting pin is driven through the housing, the first bearing, the axle bracket, the second bearing, and the hollow spacer to be secured to the nut so that the axle bracket is configured to swivel to twist the coil spring, the twisting of the coil spring stores energy, and in response to the twisting is stopped, the energized coil spring releases energy to turn the axle bracket to an inoperative position.   
     
     
         2 . The truck assembly of  claim 1 , wherein the first bearing is anchored on a top of the bossed hole; wherein the second bearing is disposed in the lower annular groove; wherein the hollow spacer includes a flange aligned with a central portion of the second bearing; wherein the mounting pin passes through the flange of the hollow spacer; and wherein an end of the mounting pin is secured to the nut. 
     
     
         3 . The truck assembly of  claim 1 , wherein the axle bracket further comprises two axles each passing through a wheel to be secured to the nut. 
     
     
         4 . The truck assembly of  claim 1 , wherein the housing further comprises a plurality of threaded holes on a top, and wherein the housing is secured to a deck of a skateboard by a plurality of screws driven through the deck into the threaded holes.