Patent ID: 7083174
Filing Date: 2006-08-01
Classification: B62B

Abstract:
1. An auxiliary wheel set adapted for aftermarket installation on two-wheeled hand trucks and having a stored position and a deployed position, said apparatus comprising: a right vertical support having a right leg portion with a right upper portion and a right lower end, a right arm portion connected to said right upper portion and extending inwardly and substantially perpendicular to said right leg portion; a left vertical support having a left leg portion with a left upper portion and a left lower end, a left arm portion connected to said left upper portion and extending inwardly and substantially perpendicular to said left leg portion; bracing means interposed between said right and left vertical supports; a first swiveling caster wheel assembly disposed on said right lower end of said right vertical support; a second swiveling caster wheel assembly disposed on said left lower end of said left vertical support; first pivot connection means to which said right arm portion is pivotally connected; second pivot connection means to which said left arm portion is pivotally connected; and side rail connection means for removably installing said first and second pivot connection means on the side rails of a hand truck; whereby said first and second pivot connection means and said side rail connection means cooperate to permit said right and left vertical supports to pivot between the stored and deployed positions.