| 摘要 |
<p>A multi-purpose, movable apparatus (henceforth dolly-truck) for conveying objects, such as a five-gallon bucket. The dolly-truck includes a one-piece, molded plastic base (12) having caster wheels (10A-C) and truck wheels (14A, 14B). The caster wheels are mounted on a lower surface of the base and provide short distance rolling movement in the upright position. Two truck support arms (13A, 13B) on the base support axle (11) with two truck wheels. The truck wheels provide a hand truck capability for negotiating stairs, bypassing obstacles and an omnidirectional capability in conveyance of objects. Centered on the base is a retaining wall (6) for holding objects. Integrated into the retaining wall is an adjustable handle (1). The handle can be used to move the dolly-truck on the caster wheels as a dolly, or on the truck wheels as a hand truck. A ring (8) surrounds the base and an annular surface (7) of the base outside the retaining wall and inside the ring forms a spill surface that prevents spillage of liquid from an open bucket onto the floor.</p> |
