An apparatus for controlling the flow of articles includes an infeed conveyor and an outfeed conveyor spaced apart from the infeed conveyor to define a space therebetween. A movable transport member is disposed across and movable along the space. Transport member includes a rotatable member drivingly...http://www.google.es/patents/US6382398?utm_source=gb-gplus-sharePatente US6382398 - Apparatus for controlling the flow of articles
