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:
Dec. 31, 1991
Filed:
May. 03, 1990
Dietmar Neuhaus, Duesseldorf, DE;
Deutshe Forschungsanstalt fur Luft-und Raumfahrt e.V., Cologne, DE;
Abstract
Pyrometric temperature measurement of molten masses arranged in a vacuum involve the problem that the material of the molten mass deposits on mirrors, windows and other optical means so that the radiation, on its way to the pyrometer, is ever more absorbed. For preventing vapor depositions in the path of radiation, a matter filter having a rotating vane wheel is arranged between the container for the molten mass and the pyrometer. The radiation passes through the gaps between the vanes. Molecules of the molten material are caught by the vanes. Accordingly, a mirror behind the matter filter is kept free of undesired vaporization and transmits radiation to the pyrometer.