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:
Aug. 21, 2012
Filed:
Apr. 14, 2010
Terry Tae-il Chung, Bartlett, IL (US);
Jeff Schroeder, Lake Zurich, IL (US);
Kerry Berland, Chicago, IL (US);
Douglas Reinking, Chicago, IL (US);
Terry Tae-Il Chung, Bartlett, IL (US);
Jeff Schroeder, Lake Zurich, IL (US);
Kerry Berland, Chicago, IL (US);
Douglas Reinking, Chicago, IL (US);
Prince Castle, LLC., Carol Stream, IL (US);
Abstract
The temperature of shelves used in a food holding cabinet are measured using a transistor. The voltage across a PN junction being known to be temperature dependent, the shelf temperature can be inferred from a calculated temperature of a PN junction of a transistor thermally coupled to a heated or refrigerated shelf. No calibration of the measurement device is required since the PN junction voltage, current and temperature relationship is well known.