F28G

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Description

CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OF BOILERS (cleaning pipes or tubes in general B08B 9/02; devices or arrangements for removing water, minerals, or sludge from boilers while the boiler is in operation, or which remain in position while the boiler is in operation, or are specifically adapted to boilers without any other utility F22B 37/48; removal or treatment of combustion products or combustion residues F23J; removing ice from heat-exchange apparatus F28F 17/00)

Subclasses

SubclassTitle
1/00 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence)
1/02 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) having brushes (brushes A46B)
1/04 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) having articulated tools, e.g. assembled in chain manner
1/06 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) having coiled wire tools, i.e. basket type
1/08 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) having scrapers, hammers, or cutters, e.g. rigidly mounted
1/10 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) having scrapers, hammers, or cutters, e.g. rigidly mounted resiliently mounted
1/12 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) Fluid-propelled scrapers, bullets, or like solid bodies
1/14 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) Pull-through rods
1/16 Non-rotary, e.g. reciprocated, appliances (F28G 3/00 takes precedence) using jets of fluid for removing debris (F28G 1/12 takes precedence)
3/00 Rotary appliances
3/02 Rotary appliances having abrasive tools
3/04 Rotary appliances having brushes (brushes A46B)
3/06 Rotary appliances having articulated tools, e.g. assembled in chain manner
3/08 Rotary appliances having coiled wire tools, i.e. basket type
3/10 Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
3/12 Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted resiliently mounted
3/14 Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted thrown into working position by centrifugal force
3/16 Rotary appliances using jets of fluid for removing debris
5/00 Cleaning by distortion (by vibration F28G 7/00)
7/00 Cleaning by vibration

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