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:
Mar. 28, 2006
Filed:
Jun. 12, 2003
Hidehiro Soga, Tokyo, JP;
Kenji Nakao, Tokyo, JP;
Kouichi Ojima, Tokyo, JP;
Yuji Bando, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electromagnetic valve of a reduced size capable of suppressing temperature rise of a coil regardless of continuous electrical energization over an extended time while preventing attracting force from lowering includes a coil cooling fluid passage () for communicating a coil cooling fluid sump space () with a controlled pressure region for allowing a fluid to flow into the coil cooling fluid sump space () from the controlled pressure region. The coil cooling fluid passage includes a small-diameter communicating passage portion () provided so as not to exert influence to a hydraulic pressure prevailing in the controlled pressure region.