Amplified loader arm

Details Amplified loader arm Amplified loader arm

1981-01-26

1982-05-18

Eickholt, E. H.

Excavating

Snow or ice removing or grooming by portable device

Railway clearer

414685, 414722, E02F 300

Patent

active

043297978

ABSTRACT:
A linkage system is described for increasing the moment arm of the hydraulic actuator or motor used to raise the lift arm of a material handling machine as the lift arm is rotated between its lowered and its raised position. The linkage includes a generally vertically disposed connecting link and a generally V-shaped lever arm. The connecting link translates the rotation of the lift arm into a vertical displacement. The lever arm converts the vertical displacement of the connecting link to rotate the lower end of the lift arm actuator forwardly and downwardly so that its position relative to the pivot point of the left arm increases as the lift arm is rotated to its raised position. Thus, a generally greater moment arm is produced to raise the lift arm in contradistinction to the lifting linkages of the prior art where the lifting moment arm generally decreased as the lift arm was rotated upwardly.

REFERENCES:
patent: 2468424 (1949-04-01), Brauch
patent: 2526500 (1950-10-01), Pilch
patent: 2986293 (1961-05-01), Konefes
patent: 3568869 (1971-03-01), Beiley

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