Fire extinguishers – Fluid systems – Plural source – mixing in transit
Reexamination Certificate
2011-07-12
2011-07-12
Nguyen, Dinh Q (Department: 3752)
Fire extinguishers
Fluid systems
Plural source, mixing in transit
C169S014000, C239S428500, C239S432000, C239S433000, C239S524000
Reexamination Certificate
active
07975773
ABSTRACT:
A high expansion foam fire-extinguishing system including: an emission nozzle (9) to which a foam solution (Wg) prepared by mixing water (W) with a foam concentrate (16) containing a surface active agent (18) is sent under pressure; a flow passage (2); and a foam screen (7) upon which the foam solution discharged from the emission nozzle impinges. The foam concentrate used is one of one in which a mixing ratio of the foam concentrate with respect to the foam solution is an adjusted mixing ratio higher than a standard mixing ratio and one in which a content rate of the surface active agent with respect to the foam concentrate is a design content rate that is higher than a standard content rate, and in which a mixing ratio of the surface active agent is a concentration for design foam expansion ratio.
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Murata Shinji
Yokoo Akihiko
Nguyen Dinh Q
Nohmi Bosai Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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