Patent ID: 6823560
Filing Date: 2004-11-30
Classification: B60B,Y10T

Abstract:
A buffering structure for wheels, comprising:at least a linking plate, in which an inner and an outer end are connected with a spindle and a wheel shaft respectively; a spindle having two ends connected to a shaft carrier under a pushcart's deck; two concentric rigid ferrules with different diameters; and a firm buffer material; in which, said spindle is first disposed in the common center of the concentric ferrules, then the space between ferrules and between the smaller ferrule and said spindle is tightly filled with the buffer material, and the inner end of the linking plate is connected with said spindle, and in which at least a protruding portion is formed laterally in a rim of the larger rigid ferrule such that the linking plate can be stopped when an impact to the wheel is overlarge.