Patent ID: 7377377
Filing Date: 2008-05-27
Classification: B61B,B65G

Abstract:
1. An overhead conveyor comprising an elongate straight box girder having a first inner space with rails and a second elongate inner space comprising an endless driven drive element, a drive carriage comprising a front carrier and a rear carrier which are arranged in a fixed spaced-apart relationship in the longitudinal direction of the girder and adapted to run on said rails, each carrier being provided with at least one friction driver preloaded to be pressed towards engagement with the drive element so as to transfer drive to the drive carriage, wherein each driver in its lower part has projecting portions adapted, in cooperation with a guide means, to be able to move the driver out of engagement with the drive element, that the conveyor further comprises a fixedly arranged guide rail arranged to cooperate with the projecting portion of the rear carrier as the carrier passes the guide rail, and that the rear carrier is provided with a depressing means adapted to cooperate with the projecting portion of the front carrier, for the purpose of being able to accumulate a number of drive carriages in the girder system, along said rail.