Electric heating – Heating devices – With power supply and voltage or current regulation or...
Reexamination Certificate
2011-06-28
2011-06-28
Paschall, Mark H (Department: 3742)
Electric heating
Heating devices
With power supply and voltage or current regulation or...
C219S497000, C427S557000, C315S117000
Reexamination Certificate
active
07968828
ABSTRACT:
A method of operating an electron bombardment heating apparatus, in which thermions emitted from filaments are accelerated and impinged upon a heating plate, so as to heat the heating plate, wherein a peripheral wall of a heated material supporting member having a heating plate as a ceiling thereof is made up of multi-staged peripheral wall portions, which are stacked vertically and different in the radius thereof, and those peripheral wall portions are connected with each other by a ring-like horizontal wall. With this, thermal stress which is caused due to the difference of temperature between the lower end portion of the heated material supporting member and the heating plate when heating up the heating plate can be mitigated, thereby preventing breakage in the heated material supporting member if conducting heating and cooling upon the heating plate, repetitively.
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Flynn ,Thiel, Boutell & Tanis, P.C.
Paschall Mark H
Sukegawa Electric Co., Ltd.
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