Patent ID: 9187260
Filing Date: 2015-11-17
Classification: B65G,H01L

Abstract:
1. A transfer system for transporting articles between a plurality of processing devices comprising: an overhead travelling vehicle track extending above load ports of the processing devices; an overhead travelling vehicle configured to travel along the overhead travelling vehicle track and having a hoist: a local track disposed lower than the overhead travelling vehicle track, extending at least to a position under the overhead travelling vehicle track, and oriented perpendicular to the overhead travelling vehicle track when viewed from above; a local carriage configured to travel along the local track and having a hoist for vertically moving an article; and a buffer disposed below the local track, configured to allow the local carriage to deliver and receive an article to and from the buffer, and extending at least to a position under the overhead travelling vehicle track, wherein the local track is configured by a lateral pair of rails, and a gap between the pair of rails is larger than a length of an article in a direction horizontal and Perpendicular to a longitudinal direction of the rails.