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:
May. 08, 1990
Filed:
Dec. 12, 1988
James L Bierschenk, Rowlett, TX (US);
Edward J Burke, Plano, TX (US);
Other;
Abstract
A thermoelectric cooler device having thermoelectric elements of n and p type semiconductor material arranged in rows and columns between insulating substrates of alumina or beryllia, or ceramic materials having a known emissivity is coated with material(s) having an emissivity substantially lower than that of the thermoelectric cooler. The coating includes a layer of insulating material on at least a portion of the surfaces of the thermoelectric cooler, a layer of diffusion barrier forming material on the insulating layer, and a layer of low emissivity material on the diffusion barrier layer. For example, the insulating layer is silicon dioxide having a thickness of about 10,000 Angstroms, the diffusion barrier layer is titanium tungsten having a thickness of about 400-500 Angstroms, and the low emissivity layer is gold having a thickness of about 1,000 Angstroms.