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. 27, 1999
Filed:
May. 23, 1997
Applicant:
Inventor:
Yuji Nakano, Toyota, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 65 ; 25112915 ;
Abstract
A solenoid valve has a biasing member for generating biasing force and a permanent magnet for generating magnetic force. When both the biasing force and the magnetic force act on a movable member, the direction of the biasing force opposes the direction of the magnetic force. Therefore, the position of the movable member is determined based on the balance between the biasing force and the magnetic force. As a result, even when the solenoid coil is not excited, a valve member moving together with the movable member stays apart from the valve seat by a predetermined distance to maintain an open fluid channel.