C - Chemistry – Metallurgy – 10 – C
Patent
C - Chemistry, Metallurgy
10
C
196/35
C10C 3/00 (2006.01) C10C 3/12 (2006.01) E01C 19/08 (2006.01) E01C 19/10 (2006.01)
Patent
CA 2027017
A unit for heating initially solid asphaltic material to provide asphaltic concrete in a condition suitable for application, including an inner enclosure defining a volume for containing the material to be heated, an outer enclosure surrounding and spaced from the inner enclosure to define a space beneath the inner enclosure and passages for heated air flow around the walls of the inner enclosure, a screw disposed in an open-top channel at the floor of the inner enclosure to move heated material, an opening in the inner enclosure floor in communication with a passage in the outer enclosure floor for delivery of heated asphaltic material moved by the screw to the unit exterior, heating chambers projecting upwardly from the floor of the inner enclosure above the heating sources to provide regions through which hot air rises from the sources, and flues extending transversely from the upper portions of the heating chamber to the end walls of the inner enclosure for conducting the heated air from the heating chambers to the aforementioned passages. The unit is operated to heat the initially cold material to a temperature between 275° and 300° F. and to maintain it at that temperature until it is used.
Heller Anton H.
O'brien William J.
St. Louis Russell A.
Poweray Infrared Corporation
Riches Mckenzie & Herbert Llp
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