Lift arm structure for front-end loaders

Details Lift arm structure for front-end loaders Lift arm structure for front-end loaders

1990-05-07

1990-11-27

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

172817, 52721, 403167, 403377, B66F 908

Patent

active

049732145

ABSTRACT:
In a front-end loader, a lift arm structure including a pair of lift arms which are rigidly joined by an improved cross-piece assembly. The cross-piece assembly includes first and second members which are configured to transversely extend one within the other between the lift arms. Along their lengths, the first and second members are separated from each other such that each is permitted to distort and absorb stress. The end portions of the first member are welded to an outside surface of the respective lift arms which the end portions of the second member are welded to an inside surface of the respective lift arms.

REFERENCES:
patent: 3237793 (1966-03-01), De Puy
patent: 3254780 (1966-06-01), Midtbo
patent: 4155470 (1979-05-01), Moore et al.
patent: 4538955 (1985-09-01), Langenfeld et al.
patent: 4576543 (1986-03-01), Kuchyt et al.
patent: 4798512 (1989-01-01), Intveld
patent: 4904151 (1990-02-01), Biemans et al.

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