Cleaning and liquid contact with solids – Apparatus – For work having hollows or passages
Reexamination Certificate
2006-06-27
2006-06-27
Stinson, Frankie L. (Department: 1746)
Cleaning and liquid contact with solids
Apparatus
For work having hollows or passages
C134S16800C, C134S181000, C239S750000
Reexamination Certificate
active
07066188
ABSTRACT:
This application discloses an apparatus for scarifying the interior surface of a sewer pipe, which can remain in the sewer under active flow conditions. The apparatus includes at least one scarifying head, which may transverse back and forth along a rail assembly, which is configured to match the circumferential shape of the sewer pipe. The scarifying head includes a nozzle assembly and driving assembly. The nozzle assembly, located at the outer end of the scarifying head has nozzles. The nozzles emit jets of water under pressure to clean or scarify the interior surface of the pipe.
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European Patent Office 0 668 400, Feb. 1995.
Bose Vernon G.
MacNeil David B.
MacNeil Gerard J.
MacNeil Gordon W.
Mac & Mac Hydrodemolition Inc.
Stinson Frankie L.
Vermette Clifford W.
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