The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
Aug. 27, 2008
Shigetaka Haga, Ibaraki-ken, JP;
Shigetaka Haga, Ibaraki-ken, JP;
Sukegawa Electric Co., Ltd., Takahagi-shi, JP;
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.