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Class Information
Number: 432/212
Name: Heating > Work chamber having heating means > Tortuous, branched or baffled heating flue means within or along chamber wall
Description: Apparatus in which combustion products heating the work chamber atmosphere move through a conduit means within the wall of the chamber or including the chamber wall as a part thereof, the conduit means providing a tortuous, branched, or plural passages to distribute heat with respect to the chamber while holding the combustion products separated from the chamber atmosphere.

Sub-classes under this class:

Class Number Class Name Patents
432/213 Having distinct burner units 8

Patents under this class:

Patent Number Title Of Patent Date Issued
8490581 Advanced fired heater unit for use in refinery and petro-chemical applications Jul. 23, 2013
8033823 Heat processing apparatus Oct. 11, 2011
7871266 Oven apparatus and seasoning method used therewith Jan. 18, 2011
7811085 Gas preheater for chemical vapor processing furnace Oct. 12, 2010
7771194 Gas preheater for chemical vapor processing furnace having circuitous passages Aug. 10, 2010
7758339 Method and apparatus for directional and controlled cooling in vacuum furnaces Jul. 20, 2010
7018485 Apparatus for subjecting rare earth alloy to hydrogenation process and method for producing rare earth sintered magnet using the apparatus Mar. 28, 2006
6200132 Oven for glass article Mar. 13, 2001
6015288 Oven for glass article Jan. 18, 2000
5295822 Convective heat transfer by cascading jet impingement in a batch coil annealling furnace Mar. 22, 1994
5201682 CRT exhaust oven Apr. 13, 1993
5018707 Heating furnace May. 28, 1991
4752268 Exhaust oven for cathode ray tubes Jun. 21, 1988
4310374 Tire retreading machine Jan. 12, 1982
4235830 Flue pressure control for tunnel kilns Nov. 25, 1980
4050890 Hot melt dispenser body Sep. 27, 1977
4042318 Apparatus for the continuous melting of salts used for modifying the properties of articles of glass or similar materials Aug. 16, 1977
3975149 Ring furnace Aug. 17, 1976

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