Solenoid valve

Details Solenoid valve Solenoid valve

2011-05-31

2011-05-31

Rivell, John (Department: 3753)

Fluid handling

Systems

Multi-way valve unit

C137S625650

Reexamination Certificate

active

07950416

ABSTRACT:
In a solenoid valve including a cylindrical sleeve which is formed with an input port, an output port, a drain port and a feedback port, and a spool which is inserted into the sleeve and which is formed with a plurality of lands for closing the individual ports, and a communication portion for communicating the individual ports; an input notch is formed in an end edge of the land located near the input port, while a drain notch is formed in an end edge of the land located near the drain port, and an axial height Hin of the input notch and an axial height Hdr of the drain notch are set so that the proportion α (=Hin/(Hin+Hdr)) of the height Hin to the sum of the heights Hin and Hdr may fall within a range of at least 0.72 (preferably, 0.85) and less than 1.0.

REFERENCES:
patent: 2952275 (1960-09-01), Mock
patent: 4126155 (1978-11-01), Bertram
patent: 4245816 (1981-01-01), Johnson
patent: 4615358 (1986-10-01), Hammond et al.
patent: 4862920 (1989-09-01), Cleasby
patent: 4899785 (1990-02-01), Inokuchi
patent: 5014747 (1991-05-01), Suzuki et al.
patent: 5682744 (1997-11-01), Hasegawa et al.
patent: 6220288 (2001-04-01), Sandau et al.
patent: 6397890 (2002-06-01), Mickelson et al.
patent: 6450194 (2002-09-01), Wasson et al.
patent: 6739293 (2004-05-01), Turner et al.
patent: 7604022 (2009-10-01), Kim
patent: 2002/0079002 (2002-06-01), Ueki
patent: 2007/0057217 (2007-03-01), Kamidate et al.
patent: 2007/0193639 (2007-08-01), Ling et al.
patent: 1932354 (2007-03-01), None
patent: 5-036179 (1993-05-01), None
patent: 2002-130494 (2002-05-01), None
patent: 2004-176895 (2004-06-01), None

Affiliated with

Also associated with

Rating

Solenoid 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 valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solenoid valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2652650