Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yukio Noguchi0
Akihiro Gotoh0
Date of Patent
February 17, 2009
0Patent Application Number
111253720
Date Filed
May 10, 2005
0Patent Primary Examiner
Patent abstract
A switching device is provided that includes a switching mechanism unit and a switch drive control circuit. In the switching device, an operating member is maintained in an ON position by the sucking force of a permanent magnet and a yoke, despite the pushing force of a biasing unit, when the permanent magnet is in an ON position. The yoke is magnetized in such a manner as to reduce the magnetic force of the permanent magnet, when a coil wound around the yoke is energized by the switch drive control unit. The operating member and a switching member are moved from the ON position to the OFF position by virtue of the pushing force of the biasing unit, thereby shutting a feed line.
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