Patent ID: 7032762

Claim:
A power-assisted movable rack system comprising a plurality of movable racks, each movable rack including: a plurality of wheels; a DC motor configured to turn forward or backward and to reciprocate the movable rack; a pair of right and left direction switches provided at opposite side edges in moving directions of the movable rack; and an actuating circuit configured to rotate the DC motor in one direction during operation of the right direction switch for a purpose of moving the movable rack to the right, and to rotate the DC motor in an opposite direction during operation of the left direction switch for a purpose of moving the movable rack to the left, wherein: the plurality of movable racks are juxtaposed, and each movable rack is configured to physically move other movable racks; each movable rack includes a signal transmitter configured to send a rightward signal to a right-driven movable rack when the right direction switch is operated on a driving movable rack, and to send a leftward signal to a left-driven movable rack when the left direction switch is operated on the driving movable rack; and the actuating circuit of the right or the left driven movable rack receiving the rightward or the leftward signal is configured to provide power to the right or the left-driven movable rack receiving the rightward or the leftward signal, the power being smaller than a power applied to the driving movable rack.