Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2009-04-10
2011-11-01
Hepperle, Stephen M (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S487500, C137S624110
Reexamination Certificate
active
08047225
ABSTRACT:
The water hammerless opening device comprises an actuator operating type valve installed on the fluid passage, an electro-pneumatic conversion device to supply the 2-step actuator operating pressure Pa to the afore-mentioned actuator operating type valve, a vibration sensor removably fixed to the pipe passage on the upstream side of the actuator operating type valve, and a tuning box to which the vibration detecting signal Pr detected by the vibration sensor is inputted, through which the control signal Sc to control the step operating pressure Ps′ of the afore-mentioned 2-step actuator operating pressure Pa is outputted to the electro-pneumatic conversion device, and with which the 2-step actuator operating pressure Pa, of the step operating pressure Ps′ which makes the vibration detecting signal Pr nearly zero, is outputted from the electro-pneumatic conversion by adjusting the control signal Sc.
REFERENCES:
patent: 5409037 (1995-04-01), Wheeler et al.
patent: 5732929 (1998-03-01), Luppino et al.
patent: 5941500 (1999-08-01), Lebkuchner
patent: 5970430 (1999-10-01), Burns et al.
patent: 6102072 (2000-08-01), Yokota et al.
patent: 6178997 (2001-01-01), Adams et al.
patent: 6192321 (2001-02-01), Grumstrup et al.
patent: 6745997 (2004-06-01), Moeller et al.
patent: 6889706 (2005-05-01), Fukano et al.
patent: 7080658 (2006-07-01), Ohmi et al.
patent: 7278437 (2007-10-01), Ohmi et al.
patent: 2002/0011762 (2002-01-01), Klenk et al.
patent: 2008/0035877 (2008-02-01), Ohmi et al.
patent: 2008/0257415 (2008-10-01), Ohmi et al.
patent: 0877 310 (1998-11-01), None
patent: 50-2075 (1975-01-01), None
patent: 55-119923 (1980-08-01), None
patent: 59-45378 (1984-03-01), None
patent: 60-8388 (1985-03-01), None
patent: 60-208677 (1985-10-01), None
patent: 62113976 (1987-05-01), None
patent: 63-115208 (1988-05-01), None
patent: 11-82763 (1993-03-01), None
patent: 7-190235 (1995-07-01), None
patent: 9-502292 (1997-03-01), None
patent: 2547366 (1997-09-01), None
patent: 11-118049 (1999-04-01), None
patent: 2000-10602 (2000-01-01), None
patent: 2000-074254 (2000-03-01), None
patent: 2002-295705 (2002-10-01), None
patent: 2004-213638 (2004-07-01), None
patent: 2004-316679 (2004-11-01), None
International Search Report issued in the corresponding application PCT/JP2005/000264, completed Apr. 8, 2005, mailed Apr. 26, 2005.
Waterhammer, A Complex Phenomenon With a Simple Solution, Downloaded May 2006 from www.omega.com, 3 pages.
Office Action issued in related co-pending U.S. Appl. No. 11/762,987, dated Dec. 18, 2008.
Dohi Ryousuke
Ikeda Nobukazu
Nagase Masaaki
Nishimura Ryutaro
Nishino Kouji
Fujikin Incorporated
Griffin & Szipl, P.C.
Hepperle Stephen M
McCalister William
Tadahiro Ohmi
LandOfFree
Method for water hammerless opening of fluid passage, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for water hammerless opening of fluid passage, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for water hammerless opening of fluid passage, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4285531