Patent ID: 8474097
Filing Date: 2013-07-02
Classification: E05D,E05Y,Y10T

Abstract:
1. A roller assembly for rolling a structure along a base surface, the roller assembly, comprising: a substantially round outer ring defining an axis of rotation for the outer ring, wherein the outer ring is operable to roll along the base surface; a substantially round inner ring operably received within and engaging the outer ring so as to allow the outer ring to rotate about the axis of rotation, the inner ring operably engaging the outer ring; a frame operably secured to the inner ring at an inner ring engaging portion such that the inner ring engaging portion and the frame remain stationary with respect to each other when the outer ring rotates about the axis of rotation; and, said inner ring straddles the axis of rotation of the outer ring to define a first side and an opposite second sides of the axis of rotation of the inner ring, and said inner ring engaging portion is only connected on one of the first and second sides of the axis of rotation of the inner ring.