Fluid handling – Systems – Flow path with serial valves and/or closures
Reexamination Certificate
2005-10-25
2005-10-25
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Systems
Flow path with serial valves and/or closures
C137S491000, C251S030010, C251S129080, C251S129180
Reexamination Certificate
active
06957663
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.
REFERENCES:
patent: 4493474 (1985-01-01), Ohyama
patent: 4535805 (1985-08-01), Mertz
patent: 4592533 (1986-06-01), Guglielmi et al.
patent: 4623118 (1986-11-01), Kumar
patent: 6021996 (2000-02-01), Nakayoshi
patent: 6315266 (2001-11-01), Hirota et al.
patent: 6328275 (2001-12-01), Yang et al.
patent: 44 42 085 (1995-06-01), None
patent: 1 069 359 (2001-01-01), None
Hirota Hisatoshi
Inoue Yuusuke
Shiota Toshiyuki
Tsugawa Tokumi
Krishnamurthy Ramesh
Patterson Thuente Skaar & Christensen P.A.
TGK Co. Ltd.
LandOfFree
Solenoid control valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solenoid control valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solenoid control valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3452156