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:
Jun. 09, 2009
Filed:
Aug. 03, 2005
Artur Schönlein, Rüsselsheim, DE;
Bernhard Börner, Freigericht, DE;
Bernd Rudolph, Alzenau, DE;
Peter March, Frankfurt, DE;
Artur Schönlein, Rüsselsheim, DE;
Bernhard Börner, Freigericht, DE;
Bernd Rudolph, Alzenau, DE;
Peter March, Frankfurt, DE;
Abstract
The radiation power emitted from the UV radiation sources () in a weathering apparatus is controlled such that the radiation power of each of the radiation sources () is measured in a predetermined spectral range of the radiation emitted from the radiation sources, with the spectral range being chosen such that the measured radiation power is representative of the radiation power in the UV, an averaged radiation power is calculated from the measured radiation powers, and the averaged radiation power is used for controlling the electrical power to be supplied to the radiation sources (). In particular, the control process can be carried out in such a way that the same electrical power, within a predetermined tolerance bandwidth, is supplied to each of the radiation sources (), and the averaged radiation power is kept constant over time at a desired nominal value.