Methods and systems for locating an underground sewer using a buoy
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United States of America Patent
Stats
-
Aug 4, 1998
Issued Date -
N/A
app pub date -
Jan 16, 1997
filing date -
Sep 12, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A first system for locating a portion of an underground sewer includes a buoy which is released into the sewer. The buoy is carried to the portion of the sewer by a flow of fluid therein. An electronic tracking system tracks the buoy during its travel through the portion of the sewer to thereby locate the portion of the sewer. A second system includes a plurality of buoys distributed along a tethered line which are released into the sewer. The plurality of buoys are carried to the portion of the sewer by a flow of fluid therein. A location of each of the plurality of buoys within the portion of the sewer is sensed to thereby locate the portion of the sewer. The plurality of buoys are then removed from the sewer by retracting the tethered line.
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Cited Art Landscape
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