(0)F28G:0/0:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE...
F28G
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F 28 G

 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 B 08 B 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 F 22 B 37/48; removal or treatment of combustion products or combustion residues F 23 J; removing ice from heat-exchange apparatus F 28 F 17/00)

 

 

 
 

 1
/ 00 Non-rotary, e.g. reciprocated, appliances (F 28 G 3/00 takes precedence)

1
/ 02 • having brushes (brushes A 46 B)  

1
/ 04 • having articulated tools, e.g. assembled in chain manner  

1
/ 06 • having coiled wire tools, i.e. basket type  

1
/ 08 • having scrapers, hammers, or cutters, e.g. rigidly mounted  

1
/ 10 • • resiliently mounted  

1
/ 12 • Fluid-propelled scrapers, bullets, or like solid bodies  

1
/ 14 • Pull-through rods  

1
/ 16 • using jets of fluid for removing debris (F 28 G 1/12 takes precedence)  
 

 3
/ 00 Rotary appliances

3
/ 02 • having abrasive tools  

3
/ 04 • having brushes (brushes A 46 B)  

3
/ 06 • having articulated tools, e.g. assembled in chain manner  

3
/ 08 • having coiled wire tools, i.e. basket type  

3
/ 10 • having scrapers, hammers, or cutters, e.g. rigidly mounted  

3
/ 12 • • resiliently mounted  

3
/ 14 • • thrown into working position by centrifugal force  

3
/ 16 • using jets of fluid for removing debris  
 

 5
/ 00 Cleaning by distortion (by vibration F 28 G 7/00)
 

 7
/ 00 Cleaning by vibration
 

 9
/ 00 Cleaning by flushing or washing, e.g. with chemical solvents (appliances using jets of fluid for removing debris F 28 G 1/16, F 28 G 3/16)
 

 11
/ 00 Cleaning by combustion processes, e.g. using squibs, using travelling burners
 

 13
/ 00 Appliances or processes not covered by groups F 28 G 1/00 to F 28 G 11/00; Combinations of appliances or processes covered by groups F 28 G 1/00 to F 28 G 11/00
 

 15
/ 00 Details (measuring thickness of deposit G 01 B)

15
/ 02 • Supports for cleaning appliances, e.g. frames  

15
/ 04 • Feeding or driving arrangements, e.g. power operation  

15
/ 06 • • Automatic reversing devices  

15
/ 08 • Locating position of cleaning appliances within conduits  

15
/ 10 • Masks for delimiting area to be cleaned