Loader lift arm structure

Details Loader lift arm structure Loader lift arm structure

1988-07-07

1990-02-27

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

172817, 52721, 403167, 403377, B66F 908

Patent

active

049041517

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.

REFERENCES:
patent: 1575208 (1926-03-01), Jacobs
patent: 2610754 (1952-09-01), Inskeep
patent: 3254780 (1966-06-01), Midtbo
patent: 3590547 (1971-07-01), Molyneux et al.
patent: 4098350 (1978-07-01), Eftefield
patent: 4155470 (1979-05-01), Moore et al.
patent: 4538955 (1985-09-01), Langerfeld et al.
patent: 4576543 (1986-03-01), Kuchyt et al.
Model 158 John Deere Farm Loader, Operator's Manual OM-W37966, issue C6, published by Deere & Company in 1986, 80 pages.
Model 265 John Deere Farm Loader, Operator's Manual OM-W37957, issue L6, published by Deere & Company in 1986, 90 pages.
Easy-On Model 80 Front-end Loader, 1 page literature dated Sep. 9, 1982, published by EZEE-ON Manufacturing Lty. of Vegreville, Alberta, Canada.
Wil-Rich Field Cultivators, 12 pages, issue FC 6/83 10M-3, published by Wil-Rich Farm Equipment Division of Lear Siegler, Inc.

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