Fluid handling – Processes – Involving pressure control
Reexamination Certificate
2007-12-04
2007-12-04
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Processes
Involving pressure control
C137S514000, C137S529000, C137S488000, C137S494000, C251S064000, C277S916000, C277S946000
Reexamination Certificate
active
10711207
ABSTRACT:
A surge relief valve comprising a main valve body having a dome port and an inlet port. The inlet port is in fluid communication with a first fluid. The invention further includes a dome reservoir connected to the main valve body via the dome port and arranged to hold a second fluid, a piston located in the main valve body, the piston in fluid communication with the reservoir, and a dampening ring positioned around the circumference of the piston operatively arranged to dampen the piston, wherein the first fluid exerts an upward force on the piston, the second fluid exerts a downward force on the piston, and the piston is arranged to move in response to a differential in the upward and downward forces, wherein the first and second fluids are isolated from one another.
REFERENCES:
patent: 2574414 (1951-11-01), Ragland
patent: 3107688 (1963-10-01), Caslow
patent: 3714953 (1973-02-01), Solvang
patent: 3913885 (1975-10-01), Greenwood et al.
patent: 3917290 (1975-11-01), Geoffroy
patent: 3933172 (1976-01-01), Allen
patent: 4580790 (1986-04-01), Doose
patent: 4848397 (1989-07-01), Bickford
patent: 5016665 (1991-05-01), Konieczynski
patent: 5174326 (1992-12-01), Steinert et al.
patent: 5842501 (1998-12-01), Powell
patent: 6220280 (2001-04-01), Lai
patent: 6428014 (2002-08-01), Scarlett
patent: 6978799 (2005-12-01), Kugelev et al.
Martin Jeffrey R.
Ostroot John W.
Flow-Safe, Inc.
Krishnamurthy Ramesh
Simpson & Simpson PLLC
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