Patent ID: 9358994
Filing Date: 2016-06-07
CPC Classification: B62B

Claim Text:
1. A hand truck comprising: an upper frame; a lower frame; two hinges for connecting the upper frame to the lower frame; a pair of wheel assemblies connected to the lower frame to lie rearward of the lower frame; and a load support assembly connected to both the lower frame and the wheel assemblies to have an operative position extending forwardly of the lower frame; wherein the upper frame includes parallel first and second side rails; wherein the lower frame includes parallel third and fourth side rails; and wherein each of the first, second, third, and fourth side rails includes two parallel frame members and a guide groove defined by the frame members; further comprising: an arcuate bar interconnected the hinges; and a lock assembly slidably disposed between the guide grooves of the first, second, third, and the fourth side rails, the lock assembly including two opposite sliding members and at least one brace each interconnecting the sliding members; wherein each of the sliding members includes an insert section disposed in the guide groove and having a first wing, a second wing opposite to the first wing, an extension extending out of the second wing, and a cavity defined by the insert section, the second wing, and the extension; wherein the extension is disposed externally of one of the first, second, third, and fourth side rails; and wherein each of the frame members is disposed in the cavity.