US Patent 8666608 Air cart metering system

An agricultural cart including a product metering system comprising an auger assembly extending generally along an axis non-parallel to a horizontal plane and non-perpendicular to the horizontal plane, and a holding chamber disposed at an upstream end of the auger assembly and configured to reduce pulsations within a flow of agricultural product from the auger assembly. The agricultural cart also includes an air source coupled to the product metering system and configured to transfer the agricultural product to an agricultural implement via an airflow.