H - Electricity – 05 – B
Patent
H - Electricity
05
B
307/36, 309/99
H05B 3/42 (2006.01) H05B 3/50 (2006.01) H05B 3/64 (2006.01)
Patent
CA 1295636
Abstract of the disclosure A resistance heating device having a longitudinal axis and comprising a substantially cylindrical graphite heating element with means for connection to an electric power source. The device has a sheath surrounding the graphite heating element, radially spaced therefrom and defining a gas tight chamber about said graphite heating element, said sheath being made from a refractory alloy sheet having angularly distributed longitudinal cor- rugations and an internal surface arranged to directly receive over its whole area radiation emitted by the graphite heating element when energized.
540752
Electricite de France - Service National
Goudreau Gage Dubuc
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