B - Operations – Transporting – 08 – B
Patent
B - Operations, Transporting
08
B
15/12
B08B 9/04 (2006.01) E03F 9/00 (2006.01)
Patent
CA 2035858
Abstract Device for cleaning a sewer of a kind which, under the action of the flowing sewage, is carried along the sewer by the sewage with a velocity minor to the average velocity of sewage flow and which comprises a hollow cleaning ball immersing into the sewage and rolling on the bed or ceiling of the sewer. The outer surface of the cleaning ball having protrusions, the outer surface of the protrusions lying on an imaginary spherical surface. For adapting the effective weight of the cleaning ball to different levels of sewage in the sewer several water through-holes are distributed on the spherical wall of the cleaning ball which open into a sewage space within the hollow cleaning ball at a wall surface on which filth guiding ribs are arranged to end close to the openings of the water through-holes.
Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.v.
Mcfadden Fincham
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