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:
Nov. 22, 1994
Filed:
Jun. 02, 1993
Christopher R Mayer, Windham, NH (US);
Leon Reznikov, Salem, MA (US);
Ametek, Inc., New York, NY (US);
Abstract
A high temperature optical probe for an optical gas temperature sensor includes a support, a generally conical hollow tip, and a joint physically interconnecting the support and the tip. The tip includes as an electromagnetic radiation emitter a sapphire-free ceramic selected from the group consisting of silicon carbide and silicon nitride. An optical lens supported in the tip is removable from the tip for repair and replacement. The joint is of a material and geometry to accommodate the thermal stresses caused by differences in thermal coefficients of expansion between the tip, joint and support, and the mechanical stresses caused by the interaction of the probe and the gas stream during high velocity movement of the gas stream past the tip. The joint sidewall is welded to the support and has a thickness of 0.008-0.012 inch where it overlaps the tip.