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:
Jul. 18, 1978
Filed:
Oct. 26, 1976
Thomas R Anthony, Schenectady, NY (US);
Harvey E Cline, Schenectady, NY (US);
John O Fielding, Ballston Lake, NY (US);
Carl A Erikson, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A semiconductor body heater is provided with a planar array of radiant heating elements spaced from a reflector. In the preferred embodiment, each radiant heating element comprises a tungsten filament quartz lamp. Each lamp is removable and replaceable without disengaging any other lamp. The reflector is cooled by flows of gas and liquid coolant therethrough. Flows of gas between the planar array of lamps and the reflector and between the reflector and a cover member also cool the apparatus. Various diffusers for substantially eliminating temperature nonuniformities over an area illumined by the planar array of lamps are also disclosed. The semiconductor body heater of the present invention is particularly well suited for use in a temperature gradient zone melting process.