| 摘要 |
A band heater includes a shoe assembly comprising a plurality of arcuate shoe segments each having a pair of outwardly-projecting extensions and a channel segment formed between the extensions. A strap assembly generally encircles the shoe assembly for retaining same in a circular configuration on an object to be heated. The strap assembly includes opposite side edges which are captured in slots formed by the shoe segment extensions. The strap assembly is thus retained generally within a continuous, annular channel formed by the shoe assembly. The strap assembly side edges can slide longitudinally within the shoe segment extension slots whereby relative movement, for example, due to thermal expansion and contraction, is accommodated. A thermal control unit, such as a tubular electric resistance heater, is located generally within the shoe assembly for conductivity heating same and is generally covered by the strap assembly.
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