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. 22, 2008
Filed:
Mar. 01, 2005
Kazuhiro Komatsu, Hyogo, JP;
Masahiko Fujimoto, Hyogo, JP;
Kouji Oonishi, Hyogo, JP;
Keisuke Kido, Hyogo, JP;
Junichi Sawada, Hyogo, JP;
Kazuhiro Komatsu, Hyogo, JP;
Masahiko Fujimoto, Hyogo, JP;
Kouji Oonishi, Hyogo, JP;
Keisuke Kido, Hyogo, JP;
Junichi Sawada, Hyogo, JP;
Fujitsu Ten Limited, Hyogo, JP;
Abstract
An apparatus for preventing a contact from being corroded includes a power source, a signal line connected to the contact, a resistance connected to the signal line, a switching section, a comparator, and an overheat detecting section. The switching section has a switch between the power source and the signal line. An impedance of the switch is smaller than that of the resistance when the switch is turned on. The comparator compares a potential of the signal line with a predetermined potential to determine as to whether or not the contact is corroded. The comparator outputs a driving signal when the comparator concludes that the contact is corroded. The overheat detecting section detects whether or not temperature of the apparatus exceeds a predetermined temperature. The overheat detecting section decreases current flowing through the switching section when the temperature of the apparatus exceeds the predetermined temperature.