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:
Sep. 24, 2002
Filed:
Jun. 28, 2000
Applicant:
Inventors:
Seizo Inoue, Tokyo, JP;
Hiromichi Tsugami, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B 1/3044 ;
U.S. Cl.
CPC ...
F15B 1/3044 ;
Abstract
An electromagnetic valve is constructed such that lengths of sealing portions, formed by a housing and a spool valve respectively between an input port and a feed-back chamber and between the feed-back chamber and a core , are unchanged upon movement of the spool valve; and aligning grooves and are respectively formed between the input port and the feed-back chamber and between the feed-back chamber and the core , whereby a smooth and stable pressure is constantly obtainable in response to an applied current even though a supplied pressure is high.