| 摘要 |
A folding hand truck comprising an upper frame, a middle frame, a lower frame, a platform, and a dual wheel assembly. The lower end of the upper frame is rotatably connected to the upper end of the middle frame, and the upper end of the middle frame is rotatably connected to the upper end of the lower frame, and the respective ends contain locking pins for locking the upper frame, middle frame, and lower frame in a substantially coplanar orientation. The platform is rotatably connected to the bottom of the lower frame such that the rear edge of the platform contacts the lower end of the lower frame in the operative position. The dual wheel assembly has a central bracket mounted to the rear side of the lower frame and has two rotatable wheel brackets capable of being locked in both operative and folded positions. When in the folded position, the platform folds into the lower frame, which folds into the middle frame. The upper frame folds into the middle frame over the lower frame between the wheels, which are then folded over the upper frame and locked in place, securing the hand truck in the folded position.
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