Support legs of mobile cranes

Details Support legs of mobile cranes Support legs of mobile cranes

1974-09-23

1976-04-27

Frazier, Roy D.

Land vehicles

Wheeled

Attachment

212145, 248354R, B60S 912

Patent

active

039530523

ABSTRACT:
In support legs intended for mobile cranes and comprising telescopically displaceable jib sections, an arrangement permitting maximum jib length while retaining complete stability of the crane, said arrangement including a support arm extending in the direction of the displacement of said jib sections and supported at one end by the crane base and abutting at its opposite end against the inner jib section, said support arm additionally provided with means to limit the degree of extension of said inner jib section.

REFERENCES:
patent: 1705625 (1929-03-01), Mitchell
patent: 2772550 (1956-12-01), Harrington
patent: 2777586 (1957-01-01), Boysen et al.
patent: 3007717 (1961-11-01), Noly
patent: 3020858 (1962-02-01), Perkins et al.
patent: 3021016 (1962-02-01), Noll et al.
patent: 3073467 (1963-01-01), Parks
patent: 3338426 (1967-08-01), Grove
patent: 3840125 (1974-10-01), Cozad

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