CPC B65G 1/1378 (2013.01) [B65G 1/0464 (2013.01); B65G 1/0492 (2013.01)] | 23 Claims |
1. A material handling system for sorting, storing, or retrieving a plurality of items, comprising:
a plurality of delivery vehicles, each vehicle comprising:
a surface configured to support an item to be delivered by the vehicle;
a transfer mechanism configured to transfer the item between the vehicle and a delivery location;
a first drive system configured to drive the vehicle along a horizontal surface, wherein the first drive system comprises one or more rotatable elements;
a second drive system configured to drive the vehicle vertically, wherein the second drive system comprises one or more rotatable elements;
a rechargeable power source electrically connected with the first and second drive systems and configured to power the first and second drive systems;
a first charging element electrically connected with the rechargeable power source;
a second charging element configured to releasably connect with the first charging element and electrically connected with an electrical power source operable to recharge the rechargeable power source of the vehicles;
wherein one of the first charging element and the second charging element comprise:
a first displaceable mount configured to facilitate movement of the first or second charging element in a vertical direction; and
a second displaceable mount configured to facilitate movement of the first or second charging element in a horizontal direction.
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