Enclosures for installation on the seabed
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United States of America Patent
Stats
-
Apr 16, 2002
Grant Date -
N/A
app pub date -
Oct 13, 2000
filing date -
Oct 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure relates to an enclosure for installation in the seabed comprising an elongate container for holding a payload. The container has a plurality of passages extending lengthwise of the container and an impeller at the lower end of the container for drawing water through at least one or said passages to form a slurry with the material of the seabed and for discharging the slurry at the upper end of the container into the surrounding water. The enclosure has inner and outer concentric passageways extending lengthwise thereof and said impeller has a blade or blades extending across the inner and outer passageways. The blade of the impeller has a first portion pitched to draw water down one of the passageways to the lower end of the container and a second portion pitched to discharge slurry up the other of the passageways to the top of the container.
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