Back to results
US 2003/0152454 A1Published application
Telescoping loader lift arm
AssigneeClark Equipment Company
InventorsLarry E. Albright, Thomas J. Roan, Gregory L. Fischer
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeClark Equipment Company
InventorsLarry E. Albright, Thomas J. Roan, Gregory L. Fischer
Estimating the term…
A telescoping lift arm assembly has an outer lift arm tube that is formed with a cross section configuration that has spaced side walls, and outwardly extending flange guide panels at the lower portions of the side walls. An inner lift arm tube is generally bell-shaped and fits into the outer lift arm tube and has outwardly flared flanges that are parallel to the flange guide panels of the outer lift arm tube. The inner lift arm tube is held in place with a cross support plate that is supported to the side walls of the outer lift arm tube, to hold the inner lift arm tube in place. There are linear bearings between the mating outwardly flared flanges and panels, as well as between the support plate and mating lower surfaces of the inner lift arm tube. Fasteners are provided to adjustably hold the support plate secured to the outer lift arm tube.
A telescoping lift arm assembly having a longitudinal axis and comprising an outer lift arm tube, and an inner lift arm tube, the outer lift arm tube having side wall portions that are spaced apart, and are joined by a top wall, and the outer lift arm tube having a lower side, the side wall portions having outwardly flared panels extending at oblique angles relative to a central longitudinal plane bisecting the space between the side wall portions, an inner lift arm tube fitted between the side wall portions of the outer lift arm tube and having outwardly flared flanges parallel to the panels on the outer lift arm tube, and the inner lift arm tube having support surfaces at a lower side thereof, and a support plate mounted to the lower side of the outer lift arm tube and engaging the support surfaces of the inner lift arm tube to slidably hold the inner lift arm tube with the outwardly flared flanges adjacent the outwardly flared panels of the outer lift arm tube.
A telescoping lift arm assembly comprising an outer tube having side walls that flare outwardly at lower portions of the side walls, a bell shaped cross section inner tube nested in the outer tube with outwardly extending portions forming the bell shape nesting with the outwardly flared side walls, and a support plate secured to the outer tube to slidably support the inner tube with the outwardly extending portions forming the bell shape slidably guided by the outwardly flared side walls of the outer tube.
A telescoping arm assembly having a longitudinal axis, comprising an outer arm and an inner arm, the outer arm having a longitudinally extending outer arm side wall portions that are spaced apart and joined by a top wall, the outer arm having a lower side, the outer arm side wall portions having outwardly flared panels adjacent the lower side extending at oblique angles laterally outwardly relative to a central longitudinal plane bisecting the space between the outer arm side wall portions, the inner arm fitted between the outer arm side wall portions and having inner arm side wall portions complementary in shape to the outer arm side wall portions, including inner arm side wall outwardly flared panels adjacent to the outwardly flared panels of the outer wall. The inner arm having a laterally extending support wall at a lower side thereof, and a removable support plate mounted to the lower side of the outer arm to slidably support the inner arm support wall and support the inner panel inner flared panels nesting adjacent the outer panels.
A telescoping arm assembly comprising an outer arm having an inverted U-shape with spaced longitudinal outer side walls that have planar flanges that flare outwardly at lower portions of the side walls, a bell shaped cross section inner arm nested in the outer tube including planar wall flared sections forming the bell shape nesting with and slidably guided by the planar outwardly flared flanges of the outer arm side walls.
Dependencies are inferred from the claim text.