Patent ID: 6851377
Filing Date: 2005-02-08
Classification: A01C,F15B,Y10S

Abstract:
1. In an agricultural planting implement having a frame adapted for movement over the ground; a tank supported on said frame for carrying a product to be dispensed to the ground; a metering mechanism for controlling the flow of said product to the ground, said metering mechanism being operably powered by a first hydraulic motor; a remote planting mechanism for receiving said product from a conduit and depositing said product into the ground; and a hydraulic system to provide a source of hydraulic fluid under pressure to said first hydraulic motor to power the operation of said metering mechanism and to a secondary hydraulic apparatus, the improvement comprising: said hydraulic system including a priority system to provide a supply of hydraulic fluid to said first hydraulic motor before supplying hydraulic fluid to said secondary hydraulic apparatus; wherein said secondary apparatus is a second hydraulic motor for powering a fan mechanism for creating a flow of air through a conduit associated with said metering mechanism; wherein said priority system comprises: a priority flow divider valve that directs a constant predetermined flow rate of hydraulic fluid to said variable rate drive system; and wherein said secondary apparatus includes a selector valve to select between said drive system for said fan mechanism and a drive mechanism for a loading auger.