heated without contact between combustion gases and charge; electrically heated

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity > heated without contact between combustion gases and charge; electrically heated

CPC:

Furnaces through which the charge is moved mechanically, e.g. of tunnel type (rotary-drum furnaces with means for agitating or moving the charge F27B7/14); Similar furnaces in which the charge moves by gravity > heated without contact between combustion gases and charge; electrically heated

CPC subdivides this area 3x more granularly than IPC with 3 additional codes.

3 codes are CPC-only extensions.

Child Classifications

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F27B 9/061 CPC only CPC only
F27B 9/062 +3 CPC CPC only CPC only
F27B 9/068 CPC only CPC only
F27B 9/08 heated through chamber walls +1 CPC IPC+CPC Available in IPC and CPC
F27B 9/10 heated by hot air or gas IPC+CPC Available in IPC and CPC