Straddle carrier with slab and coil tongs

Details Straddle carrier with slab and coil tongs Straddle carrier with slab and coil tongs

2000-11-15

2001-09-25

Werner, Frank E. (Department: 3652)

Material or article handling

Load bridging vehicle

C414S911000, C414S618000, C212S326000, C294S082230, C294S106000

Reexamination Certificate

active

06293747

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to vehicles for handling and carrying heavy loads, and more particularly concerns an improved straddle carrier incorporating combined tongs for lifting, supporting and transporting both steel slabs and coils.
BACKGROUND OF THE INVENTION
U.S. Pat. Nos. 4,170,434, 4,488,848 and 4,601,630 to Kress et al., assigned to the same assignee as the present invention, disclose vehicles that handle heavy loads. Vehicles constructed in accordance with these patents have proven themselves in the field for reliably and efficiently handling the lifting and transporting of straddled loads consisting of steel slabs and billets on the order of 50-150 tons.
U.S. Pat. No. 5,496,146 to Thomas et al., and also assigned to the same assignee as the present invention, discloses a slab and coil carrier which employs tongs for lifting, supporting and transporting steel slabs and a separate probe assembly, disposed generally between the tongs, which may be moved from an inactive storage position to an operative position for penetrating the open center of large steel coils. The probe is also elevatable with the tong supporting mechanism such that the probe can lift, support and transport the steel coils from place to place.
SUMMARY AND OBJECTS OF THE INVENTION
It is an object of the present invention to provide an improved straddle type carrier with combined tongs for lifting, supporting and transporting both steel slabs and coils.
A further object is to provide such a straddle carrier with combined slab and coil tongs which are mounted on a common tong table that can be raised and lowered to pick up or set down the steel slabs or coil.
A more detailed object is to provide means for vertically displacing the slab and coil tongs relative to each other so as to locate one set of tongs in a substantially out of the way inactive position when the other set of tongs is operative for lifting, supporting and transporting a load of slabs or coil of steel.
These and other features and advantages of the invention will be more readily apparent upon reading the following description of a preferred exemplified embodiment of the invention and upon reference to the accompanying drawings.


REFERENCES:
patent: 2959310 (1960-11-01), Meister
patent: 4016993 (1977-04-01), Tax et al.
patent: 4286915 (1981-09-01), LaBerdia
patent: 5496146 (1996-03-01), Thomas et al.
patent: 1 406 121 (1975-09-01), None

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