| http://www.w3.org/ns/prov#value | - The drive pulley is operatively connected to motor M2 by any conventional means such as intermeshing gears (not shown) or a timing belt (not shown) and controlled by motor controller 222 in order to advance the envelope 210 along the path of travel A. The conveyor subsystem also includes a plurality of idler pulleys with normal rollers 219.
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