Material or article handling – Marine loading or unloading system – Marine vessel to/from shore
Patent
1999-02-01
2000-09-05
Morse, Gregory A.
Material or article handling
Marine loading or unloading system
Marine vessel to/from shore
4141407, B65G 6516
Patent
active
061133353
ABSTRACT:
An unloader wherein a screw feeder is mounted on a vertically conveying section so as to be ascendable and descendable freely and bulk cargo is fed into a receiving space of the vertically conveying section through a discharge port made in the screw casing, characterized by (i) the discharge port which is positioned by discharge blades of the screw feeder and extended downward by the length of ascending/descending stroke of the screw feeder and (ii) a blocking casing which is mounted on the vertically conveying section so that the outer surface of the screw casing comes in sliding contact with the blocking casing and the blocking casing closes generally the lower half of the discharge port while the screw feeder is in its mounted position. An unloader wherein (i) two endless belts are installed through the upward-, laterally, and downward-conveying sections, their carrying surfaces facing and overlapping each other, the two endless belt constituting a double-belt conveyor, (ii) the discharging end of the double-belt conveyor is positioned close to the bulk-cargo receiving portion of a discharge conveyor, and (iii) two end pulleys of the discharging end of the double-belt conveyor are differentiated from each other in height and drive the two endless belts. A double-belt unloader wherein (i) two end pulleys of the double-belt conveyor at the bottom of the longitudinally conveying section are differentiated from each other in height, (ii) the lower end pulley is supported in the longitudinally conveying section so as to be movable laterally as a whole, and (iii) a drive unit to drive the lower end pulley laterally is provided at the bottom of the longitudinally conveying section.
REFERENCES:
patent: 5238346 (1993-08-01), Grathoff
patent: 5320471 (1994-06-01), Grathoff
patent: 5370490 (1994-12-01), Tsernatsch
patent: 5626218 (1997-05-01), Kamikawi
Morse Gregory A.
Sumitomo Heavy Industrie's, Ltd.
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