Patent ID: 8413999
Filing Date: 2013-04-09
Classification: B62B

Abstract:
1. A hand truck, comprising: a main frame; a load platform attached to the first end portion of the main frame, wherein the load platform extends forward of a front side of the main frame; a pair of first-size wheels attached in a spaced apart arrangement to the main frame at the first end portion thereof, wherein said first-size wheels are located on a rear side of the main frame, wherein said first-size wheels are each pivotably attached to the main frame for being pivoted about a pivot axis extending substantially perpendicular to a rotational axis of a respective one of said first-size wheels and extending in a substantially skewed orientation with respect to a load support surface of the load platform; a subframe pivotably attached at a first end portion thereof to the main frame at a position between said first-size wheels and a second end portion of the main frame, wherein the subframe is attached to the main frame in a manner for allowing the subframe to be freely pivoted between a first position and a second position with respect to the main frame, and wherein the subframe and the main frame jointly limit movement of the subframe to be between said first and second positions thereof; wherein the subframe engages a first mating portion of the frame when in the first position thereof such that movement of the subframe terminates at the first position thereof when sufficiently pivoted in a first pivot direction about a pivot axis of the subframe; and wherein the subframe engages a second mating portion of the frame when in the second position thereof such that movement of the subframe terminates at the second position thereof when sufficiently pivoted in a second pivot direction about the pivot axis of the subframe; and at least one second-size wheel attached to a second end portion of the subframe, wherein a maximum diameter of said at least one second-size wheel is equal to or greater than a maximum diameter of said first-size wheels.