Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2008-01-15
2008-01-15
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S014000, C137S488000, C251S030010
Reexamination Certificate
active
10761761
ABSTRACT:
A pressure loaded pilot valve system and method for a regulator valve is provided. The system includes a regulator valve connecting an inlet line to an outlet line, a servo control valve assembly, and a pilot valve assembly. A supply line is connected to the servo control valve, and a pilot loading pressure line connects the servo control valve to the pilot valve assembly An exhaust line connects the servo control valve to the outlet line, thereby avoiding waste, pollution, etc. associated with bleeding excess pilot pressure to the atmosphere.
REFERENCES:
patent: 4084539 (1978-04-01), Schmidt
patent: 5047965 (1991-09-01), Zlokovitz
patent: 5460196 (1995-10-01), Yonnet
patent: 6338358 (2002-01-01), Watanabe et al.
patent: 6371156 (2002-04-01), Walton et al.
patent: 6779541 (2004-08-01), Inayama et al.
patent: 2 252 848 (1992-08-01), None
patent: 2 323 683 (1998-09-01), None
patent: WO 00/75741 (2000-12-01), None
patent: WO 01/22187 (2001-03-01), None
International Search Report in PCT/US04/042083 dated Mar. 2, 2005.
Written Opinion in PCT/US04/042083 dated Mar. 2, 2005.
International Preliminary Report on Patentability dated Jul. 24, 2006.
Fisher Controls International LLC.
Krishnamurthy Ramesh
Marshall & Gerstein & Borun LLP
LandOfFree
Pressure loaded pilot system and method for a regulator... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure loaded pilot system and method for a regulator..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure loaded pilot system and method for a regulator... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3959447