B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
15/12.9
B08B 3/04 (2006.01) B08B 9/02 (2006.01) B08B 9/04 (2006.01) E03F 9/00 (2006.01)
Patent
CA 1134108
ABSTRACT OF THE DISCLOSURE The invention relates generally to a method and apparatus useful for cleaning out scouring drainage systems. The invention comprises a method of internally scouring a drainage system comprising the introduction of an abrasive, non-toxic and slowly dissoluable granular compound into a stream of fluid under pressure, directing the fluid into a drain pipe of the system whereupon the compound is caused to contact the interal wall of the pipe and thereby remove accumulated sediment therefrom; subsequently maintaining a flow of fluid under pressure through the system for a period of time sufficient to substantially complete the dissolution of such compound as may remain within the system. Furthermore, the invention contemplates drain cleaning apparatus comprising fluid conduit means adapted at one of its ends for interconnec- tion with a source of fluid under pressure, the other of its ends being adapted for insertion within a drain opening, the fluid conduit means being further provided, intermediate the length thereof with secondary inlet means; and container means releasably attached to the secondary inlet means such that the contents of the container means may gravitate freely through the inlet means into the fluid conduit.
345082
Dunsmuir George H.
Field John G.
LandOfFree
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