Heating chamber with inner heating tubes and method of replacing the heating tubes
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United States of America Patent
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-
May 5, 1998
Grant Date -
N/A
app pub date -
Feb 9, 1996
filing date -
Aug 9, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Heating chamber rotatable about a longitudinal axis thereof and having a plurality of heating tubes located in the interior thereof, a first end plate to which each of the heating tubes is secured by an end thereof, a second end plate to which each of the heating tubes is secured by the other end thereof, at least one of the ends of each of the heating tubes protruding through a respective opening formed in at least one of end plates, and a respective collar for connecting the at least one end of the respective heating tubes to the outer surface of at least one end plate, includes a respective reduced diameter portion formed in each of the heating tubes, the heating tubes being spaced from one another a greater distance at the at least one end plate than in the interior of the heating chamber; and method of replacing the heating tubes in the heating chamber.
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