having one or more bowls or cones diverging in the flow direction

Full Title

Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening > Ducting arrangements > Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser > having one or more bowls or cones diverging in the flow direction

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

HEATING; RANGES; VENTILATING

Subclass:

AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING