Fluid handling – Line condition change responsive valves – Direct response valves
Reexamination Certificate
2007-02-06
2007-02-06
Krishnamurthy, Ramesh (Department: 3753)
Fluid handling
Line condition change responsive valves
Direct response valves
C137S375000, C137S454500, C137S515500, C137S519500, C251S065000, C251S367000
Reexamination Certificate
active
10884846
ABSTRACT:
A flow control valve has a ball and an annular seat providing a positive stop for automatically preventing flow through the valve when a line downstream has been broken. The flow control valve is useful for interior applications in which seepage through the valve would be unacceptable and in which both hot and cold water lines need to be protected. A magnet may aid in positioning the ball. Sensors may be used to detect positions of the ball. A flow control system that includes the flow control valve may include any of a variety of interchangeable components for facilitating incorporation of the flow control valve in a water or other fluid line. Another embodiment includes a mechanism for detecting and stopping flow due to slow leaks.
REFERENCES:
patent: 398111 (1889-02-01), Abbot et al.
patent: 1244689 (1917-10-01), Bell
patent: 1786963 (1930-12-01), Schoenberger
patent: 3534767 (1970-10-01), Swinney
patent: 4224961 (1980-09-01), Schnabel
patent: 4349042 (1982-09-01), Shimizu
patent: 4606953 (1986-08-01), Suzuki et al.
patent: 4825897 (1989-05-01), Shade
patent: 4944327 (1990-07-01), Gyben
patent: 5052429 (1991-10-01), Yoo
patent: 5069239 (1991-12-01), Bunce et al.
patent: 5086976 (1992-02-01), Sessions
patent: 5174500 (1992-12-01), Yianilos
patent: 5335857 (1994-08-01), Hagon
patent: 5465752 (1995-11-01), Higgins
patent: 5524824 (1996-06-01), Frimmer
patent: 5704391 (1998-01-01), McGowan, Jr. et al.
patent: 5857487 (1999-01-01), Carson et al.
patent: 6000632 (1999-12-01), Wallace
patent: 6062247 (2000-05-01), King, Sr.
patent: 6179221 (2001-01-01), Goldberg et al.
patent: 6199584 (2001-03-01), Brown et al.
patent: 6202678 (2001-03-01), Hawkins
patent: 6263912 (2001-07-01), Brown et al.
patent: 6719003 (2004-04-01), Schroeder et al.
Toro Create A Greater Outdoors, “Toro 570Z PRX Series Spray Sprinklers”, May 19, 2004 pp. 1 & 2.
Shade Stephen
Starace James
Krishnamurthy Ramesh
Schmeiser Olsen & Watts LLP
Watersav Enterprises, LLC
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