Abstract: An overhead crane assembly having a movement assist system. The assembly includes a bridge engaged with end trucks movable along runway beams. A hoist assembly is engaged with a trolley that is movable along the bridge. The load is suspended from the hoist assembly via a hoist rope which has an inclinometer engaged therewith. A processor is coupled with the inclinometer and motors in the trolley and end trucks. Programming in the processor is configured to activate and deactivate the motors in response to signals from the inclinometer. The movement assist system is actuated by a human operator applying a physical force to the load by pushing or pulling the same. When this occurs, the inclinometer determines the hoist rope is at an angle relative to Normal and signals the processor which, in turn, activates the motor(s) and assists the operator in moving the load.

Abstract: A davit crane that includes a base adapted to operably engage with a ground surface. The davit crane also includes a drive assembly operably engaged with the base. The davit crane also includes an actuation assembly operably engaged with the drive assembly, wherein the actuation assembly is configured to move between a lowered position and a raised position via the drive assembly. The davit crane also includes a boom assembly operably engaged with the actuation assembly. The actuation assembly of the davit crane is operable to pivotably adjust the boom assembly between the raised position and the lowered position.

Abstract: A slew bearing that includes an inner ring. The slew bearing also includes a first outer ring positioned about a first portion of the inner ring. The slew bearing also includes a second outer ring operably engaged with the first outer ring, wherein the second outer ring is positioned about a second portion of the inner ring opposite to the first outer ring. The slew bearing also includes at least one set of ball operably engaged with the inner ring and one or both of the first outer ring and the second outer ring. The inner ring of the slew bearing is configured to rotate about the first outer ring and the second outer ring.