Excavating – Beneath a body of water – Suction
Patent
1995-12-06
1997-07-29
Melius, Terry Lee
Excavating
Beneath a body of water
Suction
37318, 37319, E02F 322, E02F 394
Patent
active
056512007
ABSTRACT:
The present invention pertains to debris exclusion devices designed for use on a small augerhead type hydraulic dredge system for operations in debris laden channels that can cause the system's pump to malfunction. Debris to be excluded by these devices include portions of trees, woody-stemmed plants, pieces of lumber, pieces of metal or even unexploded ordinance. A first embodiment comprises vertical grates with curved front surfaces mounted in front of a spoils inlet of a dredgehead shroud with cooperating cutter assembly attached to the auger. These grates are spaced to allow passage of spoils and small debris, but not larger injurious debris that is detrimental to the system's pump. A second embodiment is a tapered transition box device attached to the augerhead's shroud disposed between the grates of a spoils inlet leading through these grates and a hose feeding the system's pump. The box is a clean-out device which is self-regulated and also maintains smooth transitional flow to the system's pump.
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Lambert Dennis John
Walsh Michael Richard
Beach Thomas A.
Marsh Luther A.
Melius Terry Lee
The United States Corps of Engineers as represented by the Secre
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