(0)F27B:0/2:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN...
F27B
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<<   >>   F27B001/00 - F27B003/28  

F 27

 FURNACES; KILNS; OVENS; RETORTS (specially adapted for a purpose covered by a single other class and specifically mentioned in that class, see the class in question, e.g. bakery ovens A 21 B, glass melting furnaces C 03 B, coke or gas-making apparatus C 10 B, C 10 J, apparatus for cracking hydrocarbons C 10 G, blast furnaces C 21 B, converters for making steel C 21 C, furnaces for heat treatment of metal C 21 D; furnaces for electroslag or arc remelting of metals C 22 B 9/00; enamelling ovens C 23 D; combustion apparatus F 23; electric heating H 05 B) [4]
 

Notes

(1)

 This class covers:
 

-

 furnaces, kilns, ovens, retorts, open sintering apparatus, and details or accessories therefor, in general;
 

-

 the arrangement of electrical heating elements in or on furnaces.

(2)

 This class does not cover:
 

-

 electrical heating elements per se;
 

-

 processes carried on within the furnaces.

(3)

 In this class, the following term is used with the meaning indicated:
 

-

 "furnaces" covers kilns, ovens, or retorts.

F 27 B

 FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
 

Note
 

Attention is drawn to the references and Notes following the title of class F 27 and the Note III following the Contents of Section of section H.

 

 

 
 

 1
/ 00 Shaft or like vertical or substantially vertical furnaces (for preheating, burning, calcining or cooling lime, magnesia or dolomite C 04 B 2/12)

1
/ 02 • with two or more shafts or chambers, e.g. multi-storey  

1
/ 04 • • Combinations or arrangements of shafts  

1
/ 06 • of other than up-draught type  

1
/ 08 • heated otherwise than by solid fuel mixed with charge  

1
/ 09 • • heated electrically [4]  

1
/ 10 • Details, accessories, or equipment peculiar to furnaces of these types  

1
/ 12 • • Shells or casings; Supports therefor  

1
/ 14 • • • Arrangements of linings (linings in general F 27 D 1/00)  

1
/ 16 • • Arrangements of tuyeres  

1
/ 18 • • Arrangements of dust collectors  

1
/ 20 • • Arrangement of devices for charging [4]  

1
/ 21 • • Arrangement of devices for discharging [4]  

1
/ 22 • • Arrangements of heat-exchange apparatus (heat-exchangers in general F 28 C, F 28 D)  

1
/ 24 • • Cooling arrangements  

1
/ 26 • • Arrangements of controlling devices  

1
/ 28 • • Arrangements of monitoring devices, of indicators, of alarm devices  
 

 3
/ 00 Hearth-type furnaces, e.g. of reverberatory type (F 27 B 9/00 to F 27 B 15/00, F 27 B 21/00 take precedence); Electric arc furnaces [4]

3
/ 02 • of single-chamber fixed-hearth type  

3
/ 04 • of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces  

3
/ 06 • with movable working chambers or hearths, e.g. tiltable  

3
/ 08 • heated electrically, e.g. electric arc furnaces, with or without any other source of heat  

3
/ 10 • Details, accessories, or equipment, e.g. dust-collectors, peculiar to hearth-type furnaces  

3
/ 12 • • Working chambers or casings; Supports therefor  

3
/ 14 • • • Arrangements of linings  

3
/ 16 • • • Walls; Roofs  

3
/ 18 • • Arrangement of devices for charging [4]  

3
/ 19 • • Arrangement of devices for discharging [4]  

3
/ 20 • • Arrangements of heating devices  

3
/ 22 • • Arrangements of air or gas supply devices  

3
/ 24 • • Cooling arrangements  

3
/ 26 • • Arrangements of heat-exchange apparatus  

3
/ 28 • • Arrangement of controlling, monitoring, alarm or like devices [4]  
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