Abstract: A utility vehicle having multiple modes of steering. A mode switch on the vehicle dashboard allows an operator to select a steering mode. This selection sets up a master and slave relationship between the front and rear wheels. The master set of wheels (which can be either the front or rear wheels) is controlled by the vehicle steering wheel. The slave set of wheels is controlled by a feedback control circuit that orients the slave wheels in ways that depend on which mode of steering the operator chooses.

Abstract: Each pair of wheels is interconnected by a tie-rod assembly. The tie-rod assemblies include ring gears connected with each of the wheels, and drive motors including drive gears mesh with each ring gear whereby the tie-rod assemblies enable synchronous turning movement of the wheels when the drive motors are actuated.

Abstract: A steering system for a multi-mode steering vehicle wherein the front and rear wheel pairs are mechanically interconnected to one another for synchronous turning movement from 0.degree. through 90.degree., and the front and rear wheel pairs being electronically coupled together to enable a predetermined synchronous turning (tracking) of the rear wheels in relation to turning movement of the front wheels.

Abstract: A lift apparatus for use in material handling characterized by a self-propelled and steerable chassis which mounts a pair of laterally spaced multi-stage mast assemblies for raising and lowering a lift carriage, and a stabilization torsion bar system actuatable by the mast assemblies for maintaining the lift carriage in a horizontal plane during such operation.

Abstract: A multi-purpose utility vehicle which includes a self-propelled mobile, articulated vehicle having a cab on the chassis providing an enclosed and protected areas for an operator with a telescoping boom assembly pivotally mounted on the chassis for continuous movement through an arc of 360.degree.. The vehicle mounts a lift platform mechanism disposed forwardly of the telescopic boom assembly. The vehicle includes a telescoping, generally pantograph outrigger assembly to provide a lateral support to the rear and/or front end of the vehicle. In addition, the present invention contemplates a novel steering system which comprises multi-steering functions including automatic front wheel steering only; automatic rear wheel steering only, automatic front and rear wheel steering; and front and rear wheel steering for turning through 90.degree. in the same direction.

Abstract: A cage assembly for a mechanical press apparatus of the type for processing and extruding polymeric materials, the assembly including a pair of oppositely disposed and mating cage sections including window-like cage members each having a plurality of axially extending screen bar elements frictionally and resiliently mounted in a self-supporting relationship for dewatering or otherwise removing moisture from the processed polymeric material which can be quickly and easily installed and/or removed without tear-down of nor removal of the press and/or components thereof.