Patent ID: 8146695

Claim:
A conveyance system for movement along the ground, the conveyance system comprising: a sled having a floor, a pair of opposing front wheels, and a pair of opposing back wheels; a source of locomotion power for moving the sled capable of reversing direction of travel; a programmable control circuit located on the sled; a wire sensor located on the sled and in communication with the control circuit; a wire, placed on the ground in a desired path wherein the wire has a first stop located proximate a first end of the wire and a second stop located proximate an opposing second end of the wire; and wherein a first day of week and a first time are each programmed into the control circuit and a second day of week and a second time are each programmed into the control circuit and upon the occurrence of the first day of week and the first time the sled travels under the power of the source of locomotion power front the first stop of the wire until the wire sensor detects the second stop at which time the source of locomotion power is deactivated thereby stopping the sled, the sled remaining stopped until the occurrence of the second day of week and the second time wherein the source of locomotion power activates in reverse direction so that the sled travels back along the wire until the wire sensor detects the first stop at which time the source of locomotion power is deactivated thereby stopping the sled such that the wire sensor maintains continuous sensory contact with the wire in order to guide the sled along the wire under the control of the control circuit whenever the sled travels.