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US 9,034,110 B2Granted
Method of cleaning tubes
AssigneeExtundo Incorporated
InventorsClifford L. Johns, August M Dattilo, III, Munaf Najmuddin Chasmawala, Manfred Schmidt
Life of this patent
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Abstract
A method for grit blasting tubes and for blowing swabs through tubes, automatically sensing that the swab has passed through the tube, and logging the event. Also, various methods are used for inserting the swabs into the tubes efficiently.
Claims16
A method of cleaning tubes, comprising the steps of:
- inserting a plurality of swabs into a fixture having a plurality of holes and aligning the holes of the fixture with a respective plurality of tubes;
- then
- applying pressurized gas behind one of the swabs to blow the swab through the respective tube;
- and
- sensing the back pressure in the tube while blowing the swab through the tube, noting from a decrease in pressure that the swab has passed completely through the tube.
2 more elements
Dependencies are inferred from the claim text.