Remote controlled self-powered excavator apparatus

Details Remote controlled self-powered excavator apparatus Remote controlled self-powered excavator apparatus

1984-04-09

1985-07-02

Crowder, Clifford D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

294 6823, 294905, 37184, 37DIG1, E02F 344

Patent

active

045264139

ABSTRACT:
A self-contained system eliminates need for hydraulic or other lines from a crane to a grapple or clamshell bucket on the end of the crane hoist line. A wireless (radio or sonic) portable remote-control unit sends signals to a hydraulic power system carried above the grapple or clamshell bucket, either as an integral part of the bucket or spaced a distance up the line from the bucket suitable for avoiding damage when the grapple or clamshell bucket is used in dredging or is otherwise submerged.

REFERENCES:
patent: 2889642 (1959-06-01), Stein
patent: 3310335 (1967-03-01), Shuey
patent: 3892079 (1975-07-01), Hirano et al.
patent: 4381872 (1983-05-01), Hahn
U.S. Army Engineer Research and Development Laboratories Publication, "Construction Power", for Nuclear Warfare, 5/24/1957.

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