Abstract: A hand truck includes handles; a ledge comprising a cavity; a fastening device comprising a quick release and a clamp; and a locking device comprising a hollow first section including an opening on either side, a hollow second section releasably put on the first section, the second section including an opening on either side, the openings being in registration to each other, a block member in the first section and including a transverse channel aligned with the openings and the cavity, a sliding lock pin in the cavity, the openings, and the channel to lock the first and second sections, the lock pin having a projection in the channel, a depressible shuttle member in the first section and including a hook partially disposed in the block member, and an inclined slot in the hook with the projection disposed therein, and an actuation rod releasably secured to the shuttle member.

Abstract: A hand truck includes handles; a ledge comprising a cavity; a fastening device comprising a quick release and a clamp; and a locking device comprising a hollow first section including an opening on either side, a hollow second section releasably put on the first section, the second section including an opening on either side, the openings being in registration to each other, a block member in the first section and including a transverse channel aligned with the openings and the cavity, a sliding lock pin in the cavity, the openings, and the channel to lock the first and second sections, the lock pin having a projection in the channel, a depressible shuttle member in the first section and including a hook partially disposed in the block member, and an inclined slot in the hook with the projection disposed therein, and an actuation rod releasably secured to the shuttle member.