| 摘要 |
A hand truck, with a vertical frame incorporating side rail channels supported on wheels, and a cargo carrying nose, has a longitudinal cross rail extrusion with terminal ends which extend into the channels. The extrusion in cross-section has top, bottom, and side exterior walls connected with interior curved surfaces defining a longitudinally co-extending socket and threaded channel fasteners tap into the socket to anchor therein. Each side rail channel can be provided with walls cooperating with the rear side wall of the channel to form a rear channel and the wheel brackets connecting the wheels to the side rail channels can be secured by fasteners having parts received in the rear channels.
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