Fire extinguishers – Fluid systems – Distributing systems
Reexamination Certificate
2008-06-24
2008-06-24
Ganey, Steven J (Department: 3752)
Fire extinguishers
Fluid systems
Distributing systems
C169S019000, C169S037000, C169S054000, C169S061000, C239S069000, C239S303000, C239S565000, C137S079000
Reexamination Certificate
active
07389824
ABSTRACT:
An early suppression fast response fire protection system includes a sprinkler piping system with at least one sprinkler head assembly, a water supply system, and a check valve in fluid communication with the sprinkler piping system and the water supply system. An antifreeze solution supply system is in fluid communication with the sprinkler piping system, with the check valve isolating the antifreeze solution from the water supply unless a fire condition occurs. A control is provided that is in communication with a flow detector, which detects the pressure of the antifreeze solution in the sprinkler piping system, and a pressure detector, which detects the flow of water through the check valve, and controls the flow of the antifreeze solution to the sprinkler piping system and maintains the pressure of the antifreeze solution in the sprinkler piping system unless the flow detector detects the flow of water through the check valve in which case the control stops the flow of antifreeze solution to the sprinkler piping system to limit the discharge of antifreeze solution from the fire protection system.
REFERENCES:
patent: 3702636 (1972-11-01), Hart
patent: 4326589 (1982-04-01), Ballman
patent: 4361189 (1982-11-01), Adams
patent: 6263974 (2001-07-01), Sundholm
patent: 6367560 (2002-04-01), de Ris et al.
patent: 6491109 (2002-12-01), Christenson et al.
Ganey Steven J
Harness & Dickey & Pierce P.L.C.
The Viking Corporation
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