Public works machine, such as a hydraulic self-propelled articul

Details Public works machine, such as a hydraulic self-propelled articul Public works machine, such as a hydraulic self-propelled articul

1979-10-22

1982-11-23

Spar, Robert J.

Material or article handling

Vertically swinging load support

Shovel or fork type

414694, 180 41, E02F 908, B62D 2500

Patent

active

043603114

ABSTRACT:
This invention relates to a public works machine such as a self-propelled hydraulic shovel. This machine comprises a lower chassis provided toward one end with a pair of carrying wheels mounted on wheel-carrying arms that may be adjusted and raised, and toward the other end with raisable stabilizers. A superstructure is mounted on this lower chassis by a positioning ring. The superstructure carries, on the one hand, working equipment of the machine and, on the other hand, a pair of carrying wheels mounted on raisable arms. The control of the machine is effected by pivoting of the two parts about the positioning ring. This machine permits travelling on uneven ground while the machine remains level.

REFERENCES:
patent: 3235280 (1966-02-01), Moustgaard
patent: 3430790 (1969-03-01), Beltrami
patent: 3499559 (1970-03-01), Pederson
patent: 3635364 (1972-01-01), Tingleff
patent: 3807586 (1974-04-01), Holopainen
patent: 3924704 (1975-12-01), Lindblom

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