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Document Number
US Patent 4443908
Issued Date
April 24, 1984
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Abstract
A sewer cleaning vehicle has a swilling or clean water tank for supplying a sewer cleaning hose having a sewer cleaning nozzle and designed to be lowered into a sewer to be cleaned, a waste tank and a pumping connection joining the waste tank with the swilling water tank. Furthermore, there is a water cleaning unit as part of a system for topping up the swilling water tank with water from the waste tank. For producing a high level of setling effect in the swilling water tank, this tank has generally upright separating walls for causing a division into a number of spaces placed hydraulically in series, the most upstream space being that joined up with the pumping connection. Each such space is joined up with the hydraulically next one by at least one let-through opening in the wall near the floor of the swilling water tank, the upstream side of each such opening being joined up with a flexible hose which, by way of a float is kept at the top of the water in the upstream one of the two spaces for skimming off cleaned water from the top of the space.
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Sewer cleaning vehicle - US Patent 4443908 Drawing
Drawing from US Patent 4443908
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Number of Claims:
7
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Owner
Published
April 24, 1984
Application Number
06/371,178
Filed
April 23, 1982
US Classification
15/302   134/168C 210/294
Int'l Classification
E03F   7/00   (20060101)   E03F   7/10   (20060101)  
Examiner
Attorney/Law Firm
USPTO Field of Search
15/302   15/320   134/169C   134/168C   210/104   210/260   210/197   210/294   210/512.2   210/522  
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Claims
Description
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