(under subclass 3) Subject matter comprising a nozzle for ejecting a high velocity fluid stream which causes flow of air or products of combustion through the vertical conduit section.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22+, for a chimney or stacktop which uses a diverted natural air current to induce flow in the outlet airway.
116, for a railcar, bus, or trailer which uses a current inducing jet (often wind caused by movement of the vehicle) to induce flow in the outlet airway.
163, for other vehicles which use a current inducing jet (often wind caused by the movement of the vehicle) to induce flow in the outlet airway.
