US PATENT SUBCLASS 454 / 23
.~.~.~.~.~ Centered within induced air current

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


454 /   HD   VENTILATION

1  DF  CHIMNEY OR STACK {6}
3  DF  .~ Chimneytop or stacktop structure (e.g., cowl) {12}
20  DF  .~.~ Having air current responsive adjustment means {2}
21  DF  .~.~.~ Wind vane {3}
22  DF  .~.~.~.~ With air current inducing jet {1}
23.~.~.~.~.~ Centered within induced air current

DEFINITION

Classification: 454/23

Centered within induced air current:

(under subclass 22) Subject matter wherein the nozzle and its ejected flow stream lie in the middle of the air or products of combustion being caused to flow.