B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
15/38, 15/12.9
B08B 9/02 (2006.01)
Patent
CA 1117709
METHOD AND APPARATUS FOR CLEANING SUCTION DUCTS ABSTRACT OF THE DISCLOSURE Method and apparatus for the in situ, internal cleaning of a hollow, variable diameter, air and dirt evacuation duct which is coupled to a vacuum creating system. The apparatus comprises a fluid emitting member receivable in the duct for dislodging dirt and scale which might accumulate on the inside wall of the duct. Mechanism is provided for drawing the fluid emitting member through the duct including a line, coupled to the fluid emitting member, passing from the inlet to the outlet of the duct. An expansible and contractible member is received by the duct and is responsive to a differential pressure being created by the vacuum creating system to expand outwardly into intimate engagement with the internal wall of the duct and to move in a downstream direction whereby the line and fluid emitting member are moved through the duct.
321492
Creed Bruce
Ridout & Maybee Llp
LandOfFree
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