| 摘要 |
<p>A combination dolly-pallet device has wheel elements attached in fixed relation to a load bearing deck portion. A transition from pallet to dolly is performed by bringing support elements closer to the deck portion until weight is transferred from the support element to the wheel elements. Three embodiments are described, each based upon motion of wedge elements. In a low-angle wedge embodiment, a screw-drive actuator converts the device between pallet and dolly configurations by use of an external source of rotational power. A higher-angled wedge embodiment provides gravity-assisted manual operation to convert from pallet to dolly. A yet higher angled wedge embodiment provides automatic pallet-to-dolly conversion which is selectively inhibited by a manually releasable retention mechanism.</p> |
