Land vehicles – Wheeled – Extensible
Patent
1998-04-28
2000-01-04
Mai, Lanna
Land vehicles
Wheeled
Extensible
280656, 280 4734, 220 6, B62B 300
Patent
active
060101458
ABSTRACT:
The present utility relates a collapsible trailer which can be collapsed to a plane-shape when unused, and can be expanded to a basket-shape trailer with wheels and stick for conveying objects. The collapsible trailer comprises a bottom board, a primary wheel set on back side of the bottom board, a stick pivotally arranged on the trailer, a frame having two foldable boards pivoted on the bottom board and two lateral boards pivoted thereupon. The height of the lateral equals that of foldable boards in expanding state. When collapsing the trailer, the lateral boards are folded inward, and the foldable boards are folded such that the frame lies against the bottom board. The resulting configuration is fixed by a tenon provided on the trailer. Moreover, the stick is inverted to attach on the bottom board. Therefore, the trailer can be collapsed to a plane-shape. When the trail is to be used, the stick is drawn out and the tenon is unlocked. The frame is lifted from the bottom board and forms a basket shape with the lateral boards, thus achieving a workable state.
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