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. 02, 1994
Filed:
Nov. 08, 1993
Tsukasa Mizuno, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A cooling abnormality detection system for external electronic equipment includes a protection unit. The protection unit includes two temperature sensors arranged in each piece of external electrical equipment to be monitored, in order to measure the temperature of each. A temperature difference measuring means receives the measured temperature from each piece of equipment and outputs a sensor failure signal when the absolute value of difference between the temperatures measured by the two temperature sensors exceeds a first predetermined value. An abnormal temperature signal is output from the temperature difference measuring means when the two measured temperatures both exceed a second value. The sensor failure signal is transmitted to the electronic equipment, while generation of the abnormal temperature alarm interrupts the power supply to the electronic equipment.