| 摘要 |
A elongate, flexible, resilient, split-sleeve resistance heater of predetermined cross-section yieldingly, releasably engageable about an elongate part of similar cross-section. Said heater including an inner flexible sheet-like resistance heater element an outer, flexible, sheet-like ground, heat sink and armor screen, longitudinally spaced split band-like forming and gripping springs, flexibly connecting means between the element, screen and a power supply cord and a thermo responsive control switch; the above elements and parts being sandwiched between and sealed within vulcanized together sheets and masses of dialectric, heat resistant silicon rubber compound to be hermetically sealed therein and electrically insulated thereby.
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