Patent ID: 7316110
Filing Date: 2008-01-08
Classification: A01C,F15B,F16D

Abstract:
1. A hydraulic system for an air cart towed by a tow vehicle across a field, the air cart including a hydraulic-driven auger mechanism to feed a supply of product to a hopper, a hydraulic-driven product metering system to regulate the flow of product from the hopper, and a hydraulic-driven pressure source operable to provide forced conveyance of product supplied from the product metering system for distribution in the field, comprising: a first selector valve configured to selectively communicate a hydraulic fluid flow to a first control valve; a second selector valve configured to selectively communicate the hydraulic fluid flow to a second control valve; a main selector valve; and a common hydraulic pressure line configured to communicate the hydraulic fluid flow from the first and second control valves to the main selector valve, wherein the first and second selector valves and the first and second control valves are located at the tow vehicle, and the main selector valve is located at the air cart, wherein the first control valve provides the hydraulic flow at a first flow rate so as to drive the hydraulic-driven pressure source at the air cart, and wherein the second control valve provides the hydraulic fluid flow at a second flow rate to drive the hydraulic-driven auger mechanism.