An improved bucket conveyor chain that uses a series of .[.metal plate type links.]. .Iadd.plates .Iaddend.3 connected together at adjacent ends by a pair of bars 5. The bars 5 also hold adjacent plates up off the wheel's 1 driving surface, they also provide a surface for attaching buckets 17 and guide...http://www.google.es/patents/USRE36467?utm_source=gb-gplus-sharePatente USRE36467 - Bucket conveyor chain
