Sewer cleaning shoe with dam and jet nozzles
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United States of America Patent
Stats
-
Dec 21, 1982
Grant Date -
N/A
app pub date -
Jun 3, 1981
filing date -
Jun 13, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sewer cleaning shoe for use in removing the detritus and sedimentary matter that accumulates in the invert of sewers comprises a partly-cylindrical framework (1, 11, 14, 19) which fits in the invert of a sewer, a transverse barrier (2, 5, 23) which is connected to the framework and which, in use, substantially fills the lower part of a sewer but stops short of the top of the sewer to form a dam extending across the sewer, and an orifice (6, 18) through the transverse barrier adjacent its base through which, in use, a part of the effluent carried by the sewer is jetted to scour the detritus and sedimentary matter from the invert of the sewer. The transverse barrier stops short of the top of the sewer and provides a weir over which the remainder of the effluent flow takes place. The jet of effluent from the orifice scours and loosens the detritus and concretions that have accumulated in the invert of the sewer, and then the loosened material is entrained by the cascade of effluent flowing over the weir at the top of the transverse barrier. The entrained detritus and sedimentary matter is then carried forward with the effluent towards the downstream end of the sewer.
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Cited Art Landscape
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