US Patent 7726904 Mobile conveying apparatus having a gear-to-gear driven swing assembly

An mobile material placer or slinger with a placer conveyor having a gear-to-gear pivoting mechanism. The mobile material placer includes a body, a material hopper coupled to the body and configured to receive and store material, a feeder conveyor coupled to the body, and a placer conveyor pivotally coupled to the body about a vertical axis. The gear-to-gear pivoting mechanism includes a first gear attached to the body of the material placer and that drives a second gear fixedly mounted to the placer conveyor.