Loader lift arm structure
AssigneeDeere & Company
InventorsMarinus A. Biemans, Henry Friesen
Life of this patent
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Abstract
There is disclosed a power loader lift arm cross tube stabilizing structure. A pair of loader lift arms are interconnected by a double torque tube stabilizing member which serves to distribute twisting forces encountered by one loader arm more evenly to that loader arm structure, as well as through the cross tube and to the other loader arm structure. The cross tube structure is comprised of two tubes, one positioned within the other, the outside tube being welded to each vertical side of each side of each lift arm member, while the inside tube is welded at its outer ends to the inner surface of the outer tube.
Claims5
Lift arm structure for use in a power loader including a pair of laterally spaced, fore-and-aft extending lift arms,
- each arm being comprised of a generally tubular member having spaced apart inner and outer vertical walls;
- and an improved torque tube structure extending between the two lift arms characterized by:
- first and second rigid tubular members extending between the two arms, each member having an opposite end portion extending through the spaced apart inner and outer vertical walls of each arm;
- the second rigid tubular member carried within the first rigid tubular member;
- the first rigid tubular member being rigidly connected to the inner and outer vertical walls of each arm;
- and
- the second rigid tubular member being rigidly fastened to only the outer ends of the first rigid tubular member.
Dependencies are inferred from the claim text.