SLUDGE EXTRACTION APPARATUS AND METHOD
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United States of America Patent
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Issued Date -
May 24, 2012
app pub date -
Jun 18, 2009
filing date -
Jun 18, 2009
priority date (Note) -
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Abstract
There is provided sludge extraction apparatus (10) including a collection pipe (13) having a plurality of spaced, a suction pump (23), a suction pipe (15) with an end connected to the suction pump (23) and a suction head assembly (16) connected to the other end and slidable through the collection pipe (13) from an end, the suction head assembly (16) including a leading body portion (17) spaced from and connected to a trailing body portion (21) having an axial bore (19) connected to a suction pipe (15), the leading (17) and trailing (21) body portions substantially occluding the collection pipe (13) in use and defining there between a suction zone (22) of a length selected to open to at least one said opening at selected positions of the suction head assembly along the collection pipe.
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