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:
Apr. 10, 2012
Filed:
May. 27, 2009
Hanspeter Zinn, Ruetihof, CH;
Giuseppe Bandiera, Ehrendingen, CH;
Thomas Etter, Regensdorf, CH;
Robert Baumann, Klinganau, CH;
Hanspeter Zinn, Ruetihof, CH;
Giuseppe Bandiera, Ehrendingen, CH;
Thomas Etter, Regensdorf, CH;
Robert Baumann, Klinganau, CH;
Alstom Technology Ltd, Baden, CH;
Abstract
A method for forming an oxygen resistant aluminum oxide layer on an outer surface of a thermocouple sheath composed of a nickel alloy containing between 1% to 7% aluminum comprises removing a pre-formed oxide layer from the outer surface so as to create a prepared sheath; performing a controlled oxidation by subjecting the prepared sheath to atmospheric conditions at a temperature between 1000° C. and 1250° C. so as to form the oxygen resistant layer on the thermocouple sheath and to thus form an oxidized sheath; and cooling the oxidized sheath so as to prepare the oxidized sheath for service.