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. 01, 1993
Filed:
Nov. 01, 1989
Dieter L Rall, Los Altos, CA (US);
Luxtron Corporation, Santa Clara, CA (US);
Abstract
A method and apparatus for measuring the temperature of an external body is disclosed. The apparatus comprises dual thermal sinks or reference bodies wherein heat flow sensors are mounted. By utilizing dual thermal reference bodies, which are at different temperatures, the method of the invention yields the absolute temperature of the external body by measuring the temperatures of the referenced bodies and the heat flow rates between each of the reference bodies and the external body. The apparatus automatically calculates the proportionality constant between the heat flow rates and the temperature differences between the external body and the reference bodies and thus calculates the external body temperature.