Material or article handling – Vertically swinging load support – Shovel or fork type
Patent
1991-10-10
1993-03-23
Huppert, Michael S.
Material or article handling
Vertically swinging load support
Shovel or fork type
414715, 37103, E02F 328
Patent
active
051958635
ABSTRACT:
This loader-excavator has a boom divided into an inner boom (9) and a main boom (18), the latter being articulated at the free end (17) of the inner boom. The inner boom is pivotally mounted near the front end of the turntable (3) of the machine, and can assume a position inclined to the rear, in which its free end lies to the rear of the axis of the turntable and is above it. In this position, the main boom can be folded onto the inner boom and it then extended horizontally forward, its front end being substantially above the front part of the machine. In this condition, the arm (24) bearing the tool can be directed vertically downward. This facilitates the work as a loader. For work as an excavator, the main boom is unfolded essentially to be an extension of the inner boom and it is locked relative to the latter.
REFERENCES:
patent: 3149737 (1964-09-01), Guinot
patent: 3703973 (1972-11-01), Nilsson
patent: 3807586 (1974-04-01), Holopainen
patent: 3995761 (1976-12-01), Hurlburt
patent: 4122959 (1978-10-01), Stedman
patent: 4122960 (1978-10-01), Bauer et al.
patent: 4183711 (1980-01-01), Schaeff
patent: 4848010 (1989-07-01), Zimmerman
patent: 5054990 (1991-10-01), Schaeff
Pettibone "Cary-Lift" Brochure May 1955, 34 pages.
Hienz William M.
Huppert Michael S.
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