An accumulating conveyor system for transporting a series of loads includes a series of conveyor zones, including at least an upstream conveyor zone and a downstream conveyor zone. Each conveyor zone includes a drive arrangement for operating the conveyor zone to advance loads therealong. A control is...http://www.google.es/patents/US6253906?utm_source=gb-gplus-sharePatente US6253906 - Sequential release control for a zoned conveyor system
Sequential release control for a zoned conveyor system