Fire fighting nozzle and method including pressure...

Details Fire fighting nozzle and method including pressure... Fire fighting nozzle and method including pressure...

2011-08-23

2011-08-23

Kim, Christopher (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

And valving means controlling flow for combining

C239S412000, C239S413000, C239S414000, C239S416000, C239S416400, C239S416500, C239S417300

Reexamination Certificate

active

08002203

ABSTRACT:
A fire fighting nozzle for extinguishing industrial scale fires including improved automatic pressure regulating features, enhanced educting features including central and peripheral channeling for foam concentrate, and combining with a capacity to throw dry chemical. Improved pressure regulating features include a double acting baffle and preferably a relief valve. Method and apparatus for automatically metering an additive such as foam concentrate into a conduit having a variably flowing fire fighting fluid therethrough, the conduit including a discharge device, proximate or downstream.

REFERENCES:
patent: 3141471 (1964-07-01), Williamson
patent: 5590719 (1997-01-01), McLoughlin et al.
patent: 6659187 (2003-12-01), Crabtree et al.
patent: 6749027 (2004-06-01), Crabtree et al.
patent: 7048207 (2006-05-01), Crabtree et al.
patent: 7140552 (2006-11-01), Crabtree et al.

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