Crane device installed in cargo transporting vehicle

Details Crane device installed in cargo transporting vehicle Crane device installed in cargo transporting vehicle

1984-08-03

1987-01-27

Spar, Robert J.

Material or article handling

Self-loading or unloading vehicles

Loading or unloading by other carrier or mover means, and...

212231, 254276, B60P 154

Patent

active

046391827

ABSTRACT:
A crane device is installed in a freight car with a roof and comprises a revolvable frame suspended by the roof so as to be revolvable about a vertical axis, a derrick boom assembly having a telescopically extendable boom and luffably supported by the revolvable frame, a winch mounted on the revolvable frame and operating to lower and raise a cargo hook via a length of wire rope, a control system using motive power to operate the crane device, and a safety system having a tactile sensor on the front end of the boom and operating to stop movements of the boom when the sensor contacts an object such as a part of a freight car or a piece of cargo. The winch is provided with a safety device for preventing excessive unwinding of the wire rope.

REFERENCES:
patent: 904457 (1908-11-01), Schuman
patent: 1614769 (1927-01-01), Amsler
patent: 2772794 (1956-12-01), Cramer et al.
patent: 3203671 (1965-08-01), Anderson
patent: 3301416 (1967-01-01), Bopp
patent: 3477746 (1969-11-01), Watson
patent: 3935950 (1976-02-01), Burch
patent: 4005852 (1977-02-01), Schmitmeyer et al.
patent: 4236864 (1980-12-01), Couture et al.
patent: 4249853 (1981-02-01), Lyvers
patent: 4332989 (1982-06-01), Nicolaisen

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