Adjustable boom for material handling implement

Details Adjustable boom for material handling implement Adjustable boom for material handling implement

1975-11-24

1977-04-05

Spar, Robert J.

Traversing hoists

Overhead

Cable

212144, E02F 338

Patent

active

040157300

ABSTRACT:
A mobile excavator having a self-powered frame structure supporting a platform for rotation about a vertical axis with a boom pivoted on a platform and a material handling device pivoted on the free end of the boom. The boom is formed in first and second boom sections which are pivotally interconnected to each other and movable relative to each other to vary the overall length of the boom.

REFERENCES:
patent: 1068279 (1913-07-01), Schrader
patent: 2449160 (1948-09-01), Castle
patent: 2538000 (1951-01-01), Hoar et al.
patent: 3445015 (1969-05-01), Sampo et al.
patent: 3465904 (1969-09-01), Pensa
patent: 3917094 (1975-11-01), Magneson

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