Abstract: A land navigation system for use in a vehicle, comprises, in combination, a device providing a signal representative of the heading of the vehicle, a device providing a signal representative of the speed of the vehicle, and a computing apparatus responsive to the vehicle heading representative signal and the vehicle speed representative signal for providing a continuous indication of the position, altitude and heading of the vehicle.

Abstract: A utility pole handling attachment for skid-steer type loaders includes an hydraulically operated gripper arm and support cradle for receiving and gripping a utility pole during pulling or setting operations or transporting. The attachment is adapted to pivot the gripped pole along a path from a transport position wherein the pole is parallel to the longitudinal axis of the loader, to a pulling or setting position wherein the pole is substantially perpendicular to the longitudinal axis of the loader for installation into or removal from the ground.

Abstract: A container haulage and dumping attachment for lift trucks includes a rotatable container gripping frame having a plurality of upper and lower tynes which are hydraulically activated to grip an open top container across the top and bottom thereof. The rotatable frame is pivotally mounted between the side walls of a lift frame, which in turn includes a rear wall by which the lift frame and rotatable frame are engaged and lifted by a lift truck. Upon lifting and movement to a dumping area the rotatable frame is activated to rotate forwardly about an axis parallel to the rear wall of the lift frame and transverse to the longitudinal direction of movement of the lift truck, whereby containers may be engaged across the top and bottom, lifted, moved, and tilted forwardly at least 90.degree. to empty the contents from the containers.