Patent ID: 6572323
Filing Date: 2003-06-03
Classification: E02F,Y10T

Abstract:
A lift arm structure for a work vehicle having a pair of transversely spaced lift arms arranged on opposite sides of the work vehicle, each lift arm extending longitudinally with a proximal end and a distal end, the proximal end pivotally coupled to the work vehicle to allow vertical movement of the distal end of the lift arm, each of the pair of lift arms comprising:a first inner side wall member and a second parallel outer side wall member; a tubular top member positioned between the inner side wall member and outer side wall member and connected to both the inner aide wall member and the outer side wall member; and at least one bottom member positioned in a vertically spaced relationship from the top member between the inner side wall member and the outer side wall member and connected to both the inner side wall member and the outer side wall member, wherein the inner and outer side wall members are substantially flat and each side wall member has a top edge along the longitudinal extent of the member and wherein the top tubular member of each lift arm is a single elongated tubular member that has a longitudinal length and a rounded cross-section and is attached between the inner side wall member and the outer side wall member along the respective top edge substantially along the entire longitudinal length of the side wall members with a portion of the top tubular member extending vertically beyond the top edge of the inner side wall member and the outer side wall member.