US PATENT SUBCLASS 15 / 104.11
.~.~.~.~.~ Inside boiler drum

Current as of: June, 1999
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15 /   HD   BRUSHING, SCRUBBING, AND GENERAL CLEANING

104.001  DF  IMPLEMENTS {28}
104.03  DF  .~ Pipe, tube, or conduit cleaner {2}
104.05  DF  .~.~ Inside {8}
104.09  DF  .~.~.~ Rotary tool {4}
104.095  DF  .~.~.~.~ Power source outside tube end {2}
104.11.~.~.~.~.~ Inside boiler drum

DEFINITION

Classification: 15/104.11

Means for cleaning the inside of boiler tubes connected to a drum in which the operating mechanism when in operation is located inside the drum.