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:
Jan. 30, 1990
Filed:
May. 16, 1989
Applicant:
Inventors:
Morihiko Shimamura, Saitama, JP;
Hitoshi Takaku, Saitama, JP;
Assignee:
Jidosha Kiki Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137630 ; 25112915 ; 335262 ;
Abstract
In a conventional solenoid valve, a solenoid coil is disposed on a spool of a non-magnetic material, which forms a magnetic path therefor. By contrast, according to the invention, a sleeve-shaped guide which is formed as part of a spacer of a magnetic material is fitted into the spool and a plunger is slidably fitted into the guide, so that the plunger and the spacer define part of the magnetic path for the solenoid, thus allowing an improved magnetic path to be defined.