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:
Jan. 22, 2008
Filed:
Apr. 08, 2004
Shigetaka Haga, Ibaraki-ken, JP;
Shigetaka Haga, Ibaraki-ken, JP;
Sukegawa Electric Co., Ltd., Takahagi-shi, Ibaraki-ken, JP;
Abstract
An electron bombardment heating apparatus, in which thermions emitted from filamentsare accelerated and impinge upon a heating plate, so as to heat the heating plate, wherein a peripheral wall of a heated material supporting memberhaving a heating plate as a ceiling thereof is made of multi-staged peripheral wall portionsand, positioned vertically and having a different radius, and those peripheral wall portionsandare connected with each other by means of a ring-like horizontal wall. With this, thermal stress can be mitigated, which is caused due to a difference in temperature between the lower end portion of the heated material supporting memberand the heating platewhen heating up the heating plate, thereby causing no breakage in the heated material supporting member when conducting heating and cooling upon the heating plate, repetitively.