US PATENT SUBCLASS 122 / 383
.~.~.~ Internal conduit

Current as of: June, 1999
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122 /   HD   LIQUID HEATERS AND VAPORIZERS

379  DF  CLEANING {9}
*  DD  .~ Blow off {3}
382  DF  .~.~ Bottom {1}
383.~.~.~ Internal conduit {5}
384  DF  .~.~.~.~> Ejector
385  DF  .~.~.~.~> Mud ring
386  DF  .~.~.~.~> Pan
387  DF  .~.~.~.~> Scraper
388  DF  .~.~.~.~> Valved

DEFINITION

Classification: 122/383

(under subclass 382) Devices having a conduit extending into the boiler along the bottom, either fixed or movable, adapted to remove the sediment.