Patent ID: 8914938
Filing Date: 2014-12-23
Classification: E03F

Abstract:
1. A municipal sewer cleaning system ( 100 ) for efficiently cleaning a below grade municipal sewer line, wherein the system ( 100 ) comprises: (a) a vacuum service truck ( wherein the vacuum hose ( 122 ), the air hose ( 132 ), and the water hose ( 142 ) are collectively joined into a hose assembly ( 150 ) designed to extend into a below grade sewer line ( 104 ) from the vacuum service truck ( 110 ); (b) a collar assembly ( (c) a tapering semi-cylindrical skirt ( (d) a rigid ninety-degree reducing elbow ( wherein the reducing elbow ( 200 ) comprises a trough ( 212 ) disposed on an elbow outside wall ( 210 ), wherein the trough ( 212 ) comprises a plurality of roller units ( 214 ) disposed therein, wherein the roller unit ( 214 ) comprises a plurality of radially disposed rollers ( 216 ) surrounding a centrally disposed aperture ( 218 ), wherein each roller ( 216 ) comprises a concavely arcuate surface disposed thereon, wherein the water hose ( 142 ) is disposed in the trough ( 212 ) through the plurality of roller units ( 214 ) where the plurality of rollers ( 216 ) in each roller unit ( 214 ) interfaces with the water hose ( 142 ) for easy back and forth movement of the water hose ( 142 ) through the trough ( 212 ); wherein for operation, the hose assembly ( 150 ), the collar assembly ( 160 ) with the skirt ( 190 ) disposed thereon, and the reducing elbow ( 200 ) are inserted into a manhole ( 102 ) for evacuating silt and debris from the sewer line ( 104 ), wherein the outer collar ( 180 ) is inflated via the air hose ( 132 ) and the compressed air source ( 130 ) for sealing the collar assembly ( 160 ) against an inner wall of the sewer line ( 104 ), wherein silt and debris is mixed into a form of a slurry via the water hose ( 142 ) and pressurized water source ( 140 ), wherein the water hose ( 142 ) is moved in a back and forth motion inside the sewer line ( 104 ) via the roller units ( 214 ), wherein the slurry is vacuumed into the vacuum service truck ( 110 ) via the vacuum hose ( 122 ) and the vacuum source ( 120 ).