Patent ID: 6935256
Filing Date: 2005-08-30
Classification: A01C

Abstract:
1. A product-on-demand delivery system for agricultural product, said system comprising: a frame; a main hopper mounted on the frame, the main hopper having a nozzle assembly into which product in the main hopper is directed, said nozzle assembly comprising at least one air inlet and at least one product outlet; an application unit, said application unit provided with a product meter for dispensing the product onto a field; a product hose flow-coupled to said product outlet and to said product meter; an air pump pneumatically coupled to the nozzle assembly, the air pump generating pressurized air directed into the nozzle assembly; wherein product located in the nozzle assembly is taken up by the air stream as the air stream passes through the nozzle assembly to the product outlet; an agitator located within the main hopper and actuated to deliver product into the air stream; a sensor, arranged to respond to a magnitude of product flow rate through said product outlet; a control system that is signal-connected to the sensor and to the agitator, said control system activating the agitator when the magnitude of product flow rate is determined to be below a pre-selected amount.