Construction of valves or dampers for controlling air supply or draught

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

COMBUSTION APPARATUS; COMBUSTION PROCESSES

Subclass:

SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES

Child Classifications

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• F23L 13/02 pivoted about a single axis but having no other movement
• F23L 13/06 slidable only
• F23L 13/08 operating as a roller blind; operating as a venetian blind
• F23L 13/1 having a compound movement involving both sliding and pivoting