Auxiliary devices for promoting water circulation

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

STEAM GENERATION

Subclass:

PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS

Child Classifications

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• F22D 7/02 Saddles or like directing plates fitted to furnace tubes
• F22D 7/04 Injectors for water or steam
• F22D 7/06 Rotary devices, e.g. propellers
• F22D 7/12 Control devices
• F22D 7/14 specially adapted for locomotive boilers