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. 12, 1994
Filed:
Sep. 16, 1992
Tsukasa Mizuno, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An excess heat abnormality detection and alarm system for external electronic equipment includes a protection unit containing a timer for counting a predetermined period of time and outputting a time output signal, a temperature measuring means for causing temperature sensors to measure the temperatures of the electronic components, a first and second abnormal temperature discriminating means, the first abnormal temperature discriminating means being operated for a predetermined period of time set in the timer means. The first abnormal temperature discriminating means identifies or discriminates one of the temperatures measured by the temperature measuring means as an abnormal temperature. A second abnormal temperature discriminating means operated after a predetermined period of time set in the timer means distinguishes between the two temperatures measured by the temperature measuring means. The abnormality alarm means receives an abnormality signal from the first and second abnormal temperature discriminating means and generates a stop signal, which controls the power supplied to each of the external electronic components.