Patent ID: 6120103
Filing Date: 2000-09-19
Classification: B60B,B60Y

Abstract:
A wheel assembly attached to the underside of an object for allowing the object to roll in one of at least two rolling directions, the wheel assembly comprising:(a) a fixture having:(i) a first pair of spaced-apart axle mountings defining between them a first axial direction perpendicular to a first rolling direction, and(ii) a second pair of spaced-apart axle mountings defining between them a second axial direction perpendicular to a second rolling direction; and(b) a wheel having an axial projection extending from each side, wherein said axle mountings and said axial projections are configured such that said wheel can be located with said axial projections retained by said first pair of axle mountings for allowing the object to roll in the first rolling direction, and alternatively, with said axial projections retained by said second pair of axle mountings for allowing the object to roll in the second rolling direction.