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. 07, 2009
Filed:
Mar. 29, 2005
Applicants:
Masaya Segi, Okazaki, JP;
Mikio Suzuki, Hekinan, JP;
Masaru Suzuki, Chiryu, JP;
Inventors:
Assignee:
JTEKT Corporation, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F15B 13/044 (2006.01);
U.S. Cl.
CPC ...
Abstract
A solenoid valve comprises a solenoid portionand a valve portion. The solenoid portionis constructed by a stator core, an electromagnetic coiland a plunger. The valve portionis constructed by a valve sleeveand a spoolaxially forming plural lands-in series. The plungeris axially moved by electromagnetic attraction and drives the spool. There are formed the same pressurized areas at the plungerand the land of the spoolclosest to the plunger. Therefore, the volume in an intermediate space B between the plungerand the spoolis constant and contaminants in the oil are not sucked into the intermediate space B.