Method and apparatus to remove obstructions from sewers without

Details Method and apparatus to remove obstructions from sewers without Method and apparatus to remove obstructions from sewers without

1997-12-31

1999-11-23

Chaudhry, Saeed

Cleaning and liquid contact with solids

Processes

Hollow work, internal surface treatment

134 2212, B08B 902

Patent

active

059881887

ABSTRACT:
Adapter fittings formed with an opening therethrough are inserted into a sewer manhole with the outlet opening facing an obstruction, or build-up along the sewer walls. A forwardly thrusting nozzle adapted to spray jets of high-pressure, high-temperature water or steam is connected to a hose. Alternately, a nozzle adapted to spray jets of high-pressure, high-temperature water of steam forwardly therefrom is connected to a hose and a stiffened push wand. The nozzle and hose and/or push wand are then inserted through the adapter fittings to exit from the outlet opening into the leg of the sewer with the build-up or obstruction. A hot water/steam supply connected to the upstream end of the hose provides a supply of steam or hot, pressurized water to the nozzle. The nozzle is advanced through the sewer line to remove the build-up from the sewer walls with the aid of the hot, pressurized jets of water, and/or to an obstruction whereupon the obstruction is cleared with one of several alternate methods utilizing the hot, pressurized water or steam.

REFERENCES:
patent: 77857 (1868-05-01), Young
patent: 2117648 (1938-05-01), Bottorf
patent: 2694022 (1954-11-01), Schreiner
patent: 2735794 (1956-02-01), Pletcher
patent: 2758917 (1956-08-01), Popp
patent: 2763288 (1956-09-01), Tharp
patent: 3171150 (1965-03-01), Gray
patent: 3525112 (1970-08-01), Masters
patent: 3535161 (1970-10-01), Gutrich
patent: 3600225 (1971-08-01), Parmelee
patent: 3658589 (1972-04-01), Shaddock
patent: 4082567 (1978-04-01), Conklin et al.
patent: 5551458 (1996-09-01), Faxon

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