Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Reexamination Certificate
2008-09-09
2008-09-09
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
C219S422000, C219S424000, C219S426000, C219S539000, C219S541000, C219S552000, C219S553000, C373S117000, C373S118000, C373S128000, C373S129000, C373S134000, C117S217000, C117S222000
Reexamination Certificate
active
11740620
ABSTRACT:
Oven for non-metal melting, in particular silicon melting, with a housing enclosing an interior, at least one mould arranged in the interior for receiving a non-metal melt, at least one electrical heating device enclosing, at least partially, the at least one mould for influencing the temperature of the non-metal melt, and a power supply device connected in an electrically conductive manner to the at least one heating device for providing the heating device with a time-variable current I(t), wherein the current I(t) has a frequency of 0.1 Hz to 1000 Hz and the current I(t) is of a magnitude sufficient for setting a predetermined temperature of the non-metal melt, the currents in the plurality, where necessary, of heaters having a defined phase position in respect of one another.
REFERENCES:
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Dietrich Marc
Freudenberg Bernhard
Müller Armin
Seidel Jens
Stenzenberger Josef
Deutsche Solar AG
Fuqua Shawntina
McGlew and Tuttle , P.C.
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