Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
F27B7/02—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type
F27B2007/022—Rotary-drum furnaces, i.e. horizontal or slightly inclined of multiple-chamber or multiple-drum type the drum having a non-uniform section along its length