Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Reexamination Certificate
2005-08-30
2005-08-30
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
C137S505140, C137S505410
Reexamination Certificate
active
06935362
ABSTRACT:
There is provided a pilot valve (50), suitable for use in water and gas supply systems, the valve including biassing means (57), to control a gate (55), for controlling fluid flow through a control chamber (51), and a second chamber (52), which is sealed by a diaphragm (53), the second chamber (52), in use, receiving a control pressure for controlling the operation of the gate (55), such that an increase in control pressure acts to reduce fluid flow through the gate (55). The side of the diaphragm (53), against which the control pressure is not applied, is in fluid communication with the control chamber (51).
REFERENCES:
patent: 3103232 (1963-09-01), Ritter et al.
patent: 3592223 (1971-07-01), Reese
patent: 3807439 (1974-04-01), Doe
patent: 4026513 (1977-05-01), Callenberg
patent: 4200911 (1980-04-01), Matsumoto
patent: 4267855 (1981-05-01), Bradshaw
patent: 4966188 (1990-10-01), Fischer et al.
patent: 5016665 (1991-05-01), Konieczynski
patent: 5063956 (1991-11-01), Borcuch et al.
patent: 5460196 (1995-10-01), Yonnet
patent: 5694975 (1997-12-01), Eidsmore
patent: 5816286 (1998-10-01), Scott et al.
patent: 5967176 (1999-10-01), Blann et al.
patent: 6240956 (2001-06-01), Johnson
patent: 3741364 (1989-06-01), None
patent: 0 081 229 (1983-06-01), None
patent: 1.582.851 (1969-10-01), None
patent: 673787 (1950-10-01), None
patent: 2284687 (1995-06-01), None
Automatischer Duerchflussregler, Technische Rundschau, vol. 62, No. 44, Oct. 16, 1970.
Head Johnson & Kachigian
Krishnamurthy Ramesh
Technolog Limited
LandOfFree
Pilot 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 Pilot valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pilot valve will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3486182