| 431 / | HD | COMBUSTION |
| 298 | DF | FIBROUS WICK TYPE FLAME HOLDER {9} |
| 315 | DF | .~ Having adjustable wick exposure, position, or porosity setting structure {1} |
| 316 | DF | .~.~ Rotatable projection means engages wick {2} |
| 317 | ![]() | .~.~.~ Transmission mechanism rotates means |