Excavating – Beneath a body of water – Suction
Patent
1994-10-28
1997-04-08
Melius, Terry Lee
Excavating
Beneath a body of water
Suction
37324, 37327, 37321, 37343, A01B 7104, E02F 324, F16C 1300
Patent
active
056176546
ABSTRACT:
A dredge apparatus with an improved cutter includes a hull, a boom extending from the hull, and a cutter element rotatably mounted at the free end of the boom. The cutter element is positioned adjacent a suction line that is supported by the boom. The improved cutter element includes a plurality of rings having large open central portions for transmitting material to the suction. At least a pair of rings are spaced apart, one of the rings being supported using a rotary hub and spokes to a drive shaft. The external periphery of each of the rings carries three circumferentially spaced helical vanes. The helical vanes extend circumferentially and from ring to ring beginning at a front ring and ending at a rear ring which is adjacent the boom. Each of the vanes is "V-shaped" in transverse cross section providing a concave and a convex vane surface. The concave surface of each vane faces the suction line. The convex surface of each vane faces the front of the cutter element.
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Beach Thomas A.
Melius Terry Lee
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