Patent ID: 8579300
Filing Date: 2013-11-12
Classification: A63C

Abstract:
1. A truck assembly, comprising: a baseplate including a pivot arm hole provided at a first end of the baseplate, a first kingpin hole provided at a second end of the baseplate and a coil spring holder provided at the second end of the baseplate; a wheel axle couplable to a wheel on each end of the wheel axle; a pivot arm inserted into the pivot arm hole of the baseplate; an axle housing having a first housing end, a second housing end and a second kingpin hole; the first housing end including the wheel axle and the second kingpin hole, and the second housing end including the pivot arm; a swingable kingpin including a first substantially cylindrical portion and a second substantially cylindrical portion, wherein the first portion swings relative to the second portion by smooth toothless contact between the first portion and the second portion such that the swinging pivots the pivot arm about an axis passing through the pivot arm hole and the first kingpin hole; and a coil spring member provided substantially parallel to the swingable kingpin and coupled to and in direct contact with the coil spring holder of the baseplate and the first housing end of the axle housing.