Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Reexamination Certificate
2007-10-02
2007-10-02
Barr, Michael (Department: 1746)
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
C134S022120, C134S026000, C134S027000
Reexamination Certificate
active
10838048
ABSTRACT:
An apparatus and method for cleaning and pressure testing tube structures comprising a cleaning fluid supply pump and a pressurization pump alternately in fluid communication with a feed header having a feed header interface engageable to an end of at least one tube structure and a drain header having a drain header interface engageable to an opposing end of the at least one tube structure and an outlet valved so as to be selectively closed or opened depending on mode of operation of the apparatus. The apparatus and associated method cleans and pressure tests a tube by engaging a tube between the feed header interface and the drain header interface and maintaining said engagement while sequentially flowing a cleaning fluid through the inner diameter of the hollow tube, pressurizing a static fluid within the hollow tube, and releasing fluid from the tube.
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Barr Michael
Chaudhry Saeed
The Boeing Company
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