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. 14, 1981
Filed:
Jun. 04, 1979
Applicant:
Inventor:
Richard B Stephens, Murray Hill, NJ (US);
Assignee:
Exxon Research and Engineering Company, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F24J / ;
U.S. Cl.
CPC ...
126418 ; 126422 ; 126417 ; 350267 ; 350353 ; 136246 ;
Abstract
An optical switching device for reflecting incident light at or above a predetermined temperature comprises a layer of a metal sulfate salt solution in thermal contact with a source of heat. The solution is characterized as having decreasing salt solubility with increasing temperature. When the heat source exceeds a predetermined temperature, the solution precipitates a light scattering layer, substantially reflecting incident light. Embodied in a solar panel, the present invention provides automatic over-temperature control, reflecting light from the energy converter whenever panel temperature exceeds a predetermined limit.