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:
Feb. 28, 2006
Filed:
Jan. 24, 2002
Applicants:
Thomas Bogdahn, Karlstein, DE;
Oliver Ganz, Bruchköbel, DE;
Inventors:
Thomas Bogdahn, Karlstein, DE;
Oliver Ganz, Bruchköbel, DE;
Assignee:
Heraeus Tenevo GmbH, Hanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D 7/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A resistance furnace has a tubular heating element with a vertically-oriented longitudinal axis. The heating element has a shell surface defined by an upper side and a lower side and surrounding a furnace chamber. The heating element is connected to at least two supply terminals by which heating current is introduced at power supply points into the heating element. The supply terminals include a surrounding upper annular collar adjacent the upper side of the shell surface, and also a surrounding lower annular collar adjacent the lower side of the shell surface.