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:
Oct. 25, 2005
Filed:
Feb. 07, 2003
Hisatoshi Hirota, Tokyo, JP;
Yuusuke Inoue, Tokyo, JP;
Toshiyuki Shiota, Tokyo, JP;
Tokumi Tsugawa, Tokyo, JP;
Hisatoshi Hirota, Tokyo, JP;
Yuusuke Inoue, Tokyo, JP;
Toshiyuki Shiota, Tokyo, JP;
Tokumi Tsugawa, Tokyo, JP;
TGK Co., Ltd., Tokyo, JP;
Abstract
The object of the present invention is to provide a solenoid control valve simple in construction and low in cost, realized by reducing the number of component parts, eliminating screw-joined portions, and minimizing the use of rubber O rings. A valve hole of a pilot valve, a hole of a bearing for supporting one end of a shaft of a solenoid, and a fitting hole in which is fitted one end of a sleeve, are formed along the same axis in a body. This makes it possible to accurately establish the concentricity of movable components of the solenoid when the sleeve is fitted in the fitting hole, and hence, a pilot valve element can be integrally formed with the shaft. Set values for a main valve and the pilot valve are adjusted by adjusting the amounts of insertions of a press-fit member and a bearing by press-fitting. At the same time, a space below a piston and an end of a hole through a core are closed by the press-fit members and the solenoid and the body are joined to each other by caulking a yoke to thereby eliminate screw portions, and minimize rubber sealed portions.