Fluid handling – Systems – Multi-way valve unit
Reexamination Certificate
2006-02-03
2009-02-17
Bastianelli, John (Department: 3753)
Fluid handling
Systems
Multi-way valve unit
C251S121000, C251S208000, C251S306000, C251S317000
Reexamination Certificate
active
07490627
ABSTRACT:
A butterfly valve having a pair of disk tails provided at the back of a valve body in the rotation direction in an opening operation, a water flow hole formed in each disk tails, and a steady region found in relationship between loss factor and opening degree of the valve body where the loss factor becomes substantially constant with a change in opening degree of the valve body when water is filled from the water flow hole. Water filling velocity in an upstream pipe of the butterfly valve from the water flow hole, and pressure head upstream of the butterfly valve are set. Optimal value of the loss factor is determined based on the set water filling velocity and pressure head, and a total opening area of the water flow holes is set so that the loss factor equals the optimal value in the steady region.
REFERENCES:
patent: 3298677 (1967-01-01), Anderson
patent: 3960177 (1976-06-01), Baumann
patent: 4036469 (1977-07-01), Robinson
patent: 4479510 (1984-10-01), Bey
patent: 4676481 (1987-06-01), Hayes
patent: 4712768 (1987-12-01), Herr et al.
patent: 5465756 (1995-11-01), Royalty et al.
patent: 6131882 (2000-10-01), Suzuki
patent: 6758458 (2004-07-01), Ando et al.
patent: 59-101054 (1984-07-01), None
patent: 62-6568 (1987-01-01), None
patent: 07-208615 (1995-08-01), None
patent: 2003-120829 (2003-04-01), None
patent: 2003-254450 (2003-09-01), None
patent: 2003-329148 (2003-11-01), None
patent: 2004-218786 (2004-08-01), None
Bastianelli John
Fildes & Outland, P.C.
Kubota Corporation
LandOfFree
Butterfly valve with water-filling function does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Butterfly valve with water-filling function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Butterfly valve with water-filling function will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4086656