Abstract: A suspension system for a vehicle includes a right front wheel, a left front wheel, a right rear wheel and a left rear wheel. A suspension system for the vehicle includes a first cylinder supporting the vehicle at the right front wheel in fluid communication with a second cylinder supporting the vehicle at the left front wheel, wherein the first and second cylinders form a virtual articulated front axle. The suspension system also includes a third cylinder supporting the vehicle at the right rear wheel and a fourth cylinder supporting the vehicle at the left rear wheel. The suspension system includes two spool valves in fluid communication with the first and second cylinders and intermediate the first and second cylinders. When one of the rear wheels is unweighted, an associate one of the spool valves closes and fluid flow between the first and second cylinders is blocked to create a virtual locked axle.

Abstract: Stalk rolls are used for a corn harvester having a body, an engine, a cab mounted to the body and a head mounted to a front of the body. The head includes an auger, row separators, corn stalk gathering assemblies between the row separators and ear removal devices. Each ear removal device includes a pair of stalk rolls. Each stalk roll has a core and longitudinally extending flutes spaced about a periphery of the core and extending along the core. Each stalk roll has a straight first section, a second section proximate a first end of the first section and having a first tapering profile, and a third section proximate the second section opposite the first section and having a second tapering profile.

Abstract: An article pickup system includes a pickup vehicle having collector assemblies extending in a side by side configuration and engaging articles on the ground. The collector assemblies generally include a rotating drum with flexible fingers having widened ends extending outward there from. A separator assembly includes sprocket type devices to remove the collected articles from the collector assemblies. In one embodiment, the collector assemblies pivot independently from one another and the separator assemblies are mounted on a linkage to maintain spacing and move upward and downward with the collector assemblies. The collector assembly includes a series of conveyors for transporting the collected fruit. The collector assemblies may be utilized with a sweeper device having generally horizontally extending arms that engage fruit on the ground and move it toward the collector assemblies with the arms raising up to release the fruit in the desired location in the path of the collector assemblies.