Title:
FIRE EXTINGUISHING SPRAY NOZZLE OF SPRINKLER FIRE EXTINGUISHING EQUIPMENT
Document Type and Number:
Japanese Patent JP3734252
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To achieve a higher fire extinguishing capacity, least damages due to water by reducing the amount of discharged water and a reduction in cost by minimizing the capacities of pumps.
SOLUTION: An inner cylinder 32 is movably housed into an outer cylinder 31 connected to fire extinguishing piping and a mobile open/close ring member 54A and a pressure chamber 50a are provided between the outer cylinder 31 and the inner cylinder 32. A guide member 35 is sent into or out of an inner cylinder 33 under a water pressure with the thrusting of the inner cylinder 33 to vary the radius of discharge so that a fire distinguishing solution or water forced is sprayed concentratedly in a non-sprayed ring-like shape, which varies the diameter of a ring-like water discharging pattern so as to make it reach the outer rim of a specified protection range from right below the head.
Inventors:
Toshihide Tsuji
Tonomura Kenaki
Shimokawa
Tonomura Kenaki
Shimokawa
Application Number:
JP2002320936A
Publication Date:
January 11, 2006
Filing Date:
March 26, 1996
Export Citation:
Assignee:
Hochiki Corporation
International Classes:
A62C31/02; A62C31/03; A62C37/12; B05B3/02; B05B3/16; (IPC1-7): A62C31/02; B05B3/02
Domestic Patent References:
| JP36005232B1 | ||||
| JP48049298A | ||||
| JP47032665A | ||||
| JP6070997A | ||||
| JP5123419A | ||||
| JP2098963U | ||||
| JP55061463U |
Foreign References:
| US4653693 |
Attorney, Agent or Firm:
Susumu Takeuchi
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