Method and apparatus for cleaning pipe
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United States of America Patent
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Apr 28, 1992
Issued Date -
N/A
app pub date -
Jan 28, 1991
filing date -
Jan 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for cleaning the outer periphery of a pipe (10) by a carriage (28) travelling along the pipe (10). A housing (58) supported from an upper support frame (56) of the carriage (28) includes a pair of housing halves (58, 60) pivotally connected to each other and forming an enclosed chamber about the pipe (10). Nozzles (94) on the housing (58) are spaced about the pipe (10) for the discharge of a cleaning material in a high velocity stream against the outer surface of the pipe (10). A lifting head (114) connected to the housing halves (58, 60) pivots the halves (58, 60) to an open position and also lifts the carriage (28) from the pipe (10). An embodiment shown in FIGS. 8-10 includes a housing (58B) mounted on rollers (85B) of cariage frame (56B) for oscillation of housing (58B) and nozzles (94B) in an arcuate stroke relative to the carriage frame (56B).
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