GB2299020A - Fire extinguishing agent for use in a throwable container - Google Patents
Fire extinguishing agent for use in a throwable container Download PDFInfo
- Publication number
- GB2299020A GB2299020A GB9517768A GB9517768A GB2299020A GB 2299020 A GB2299020 A GB 2299020A GB 9517768 A GB9517768 A GB 9517768A GB 9517768 A GB9517768 A GB 9517768A GB 2299020 A GB2299020 A GB 2299020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shell
- fire extinguishing
- extinguishing agent
- container
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C19/00—Hand fire-extinguishers in which the extinguishing substance is expelled by an explosion; Exploding containers thrown into the fire
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
- A62D1/0028—Liquid extinguishing substances
- A62D1/0035—Aqueous solutions
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Fire-Extinguishing Compositions (AREA)
Abstract
A fire extinguishing agent suitable for use in a throwable container e.g. fabricated from PVC, polyethylene or polyethylene and breakable by shock, contains ammonium chloride, potassium carbonate, sodium bicarbonate and diammonium hydrogen phosphate (ammonium secondary phosphate) in water.
Description
FLUID FIRE EXTINGUISHING AGENT SHELL
The present invention relates to a fluid fire extinguishing agent shell, comprising a mixed aqueous solution of a potassium compound, a sodium compound, and an ammonium compound mold packed by a synthetic resin material. The shell may be thrown.
There are many instances when conventional installed fire extinguishers are of no use to extinguishing an initial fire, for a reason that a person who uses a fire extinguisher in case of emergency may be seized with sudden abnormal fear and lose his or her presence of mind, so that he or she can not precisely operate the extinguisher. Furthermore, a fire extinguishing agent in the extingisher may change with lapse of time such that the agent does not effectively act, or for other reasons. In general, we still have various problems today with respect to fire prevention and protection means.
In order to solve these problems, the present inventor previously developed a fluid fire extinguishing agent shell for throwing, comprising a solution having a specific gravity of 1.12, sealed in a resin container formed such that it can be readily thrown, said solution being obtained by dissolving in a suitable amount of water a mixture comprising on a weight basis: 57% of ammonium chloride (NH4C1), 6% of sodium bicarbonate (NaHOO3), 27% of anhydrous sodium carbonate (Na2CO3) , and 10% of ammonium secondary phosphate ((NH4)2 HPO4), and allowing reaction with each other (see Japanese Patent Application
No. Sho. 57-11101).When such a fluid shell is thrown into the origin of a fire, decomposition and diffusion of the fluid fire extinguishing agent take place at the same time of rupture of the container, so that heat and oxygen get away from the burnt materials, thereby enabling the flame to disappear. However, development of a fluid fire exinguishing agent shell with more superior fire extinction performance has been demanded.
The present invention provides a fire extinguishing shell that anyone can easily use as a simple appliance at the time of occurrence of a fire. The shell is effective even after storage for a long period of time.
The shell may be thrown1 with superior extinction performance than that of the above-described fluid fire extinguishing agent shell previously developed by the present inventor.
The present inventor has made investigations with respect to a fluid fire extinguishing agent for many years. As a result, it has now been found that not only the fire extinguishing efficiency is markedly improved, but also the fire extinguishing time is shortened, if potassium carbonate (K2C03) is used in place of the anhydrous sodium carbonate (Na2C03) in the fluid fire extinguishing agent. Also, it has now been discovered that, in comparison with the previous fluid fire extinguishing agent, if the fire extinguishing agent concentration is increased by from about 12 to about 17% and particularly from about 13 to about 15%, and the specific gravity is set to about 1.20 or higher, preferably from about 1.25 to about 1.29, and particularly from about 1.27 to about 1.28, the fire extinguishing efficiency is further improved.
A first aspect of the present invention provides a fluid fire extinguishing agent shell, comprising a fluid fire extinguishing agent mold packed (e.g. sealed) in a thin walled container (e.g. a resin container) breakable by suitable shock, said fluid fire extinguishing agent being a mixture comprising all in terms of by weight:
from about 48% to about the saturation point (preferably from about 49% to about 55%, and particularly about 51%) of ammonium chloride.
from about 28% to about 38% (preferably from about 30% to about 36%, and particularly about 33%) of potassium carbonate;
from about 8% to about 14% (preferably from about 9% to about 12%, and particularly from about 10% to about 11%) of ammonium secondary phosphate; and
from about 4% to about 8% (preferably from about 5% to about 7%, and particularly about 6%) of sodium bicarbonate;
wherein said components are dissolved in a suitable amount of water.
The shell may have such a size as to be throwable by a person.
A second aspect of the present invention provides a method of fire fighting, comprising utilising a shell according to the first aspect of the invention.
Usually, it is preferable that the fluid fire extinguishing agent has a specific gravity of about 1.20 or higher, preferably from about 1.25 to about 1.29, and particularly from about 1.27 to about 1.28, by dissolving the above-described mixture of said first aspect in water in an amount of from about 2.8 times to about 3.0 times.
The above-described resin container of said first aspect may be a thin-walled rectangular cylinder(as shown in for example FIG. 1). Conveniently, said container has a volume of from about 500 to about 1,200 ml, and particularly from about 800 to 1,000 ml. The material(s) of the container may be selected from suitable materials, e.g. polyvinyl chloride, low-pressure polyethylene, highpressure polyethylene, polypropylene, or the like, etc.
In case of emergency that a person fights the clock, he or she may grasp the fluid fire extinguishing agent shell of the present invention, and throw the shell into the origin of a fire, such that the container ruptures and the diffused fluid fire extinguishing agent causes chemical reaction by heat of the burnt material, thereby to take away heat and oxygen, and the burning and/or burnt material may be cut off from air by emission of water vapor to make the flame disappear.
The function of each of the components of the fluid fire extinguising agent in the present invention is as follows.
(1) Ammonium chloride and potassium carbonate react with each other slightly even at an ordinary temperature, to emit a weakly ammoniacal odor in the following manner.
2NH4Cl + K2C03 - > 2NH3 + C02 + 2KC1 + H20.
This reaction rapidly proceeds as the temperature increases. If the fire extinguishing agent is thrown into a fire, the agent vigorously reacts to emit ammonia (NH3), which reacts with oxygen in the following manner.
4NH3 + 302 - > 2N2 + 6H20.
Accordingly, oxygen in the air is rapidly eliminated by the C02,N2,NH3,H20, whereby the burning is suppressed.
(2) Ammonium secondary phosphate has been known as a fire extinguishing agent and has hitherto been used in a fire extinguisher. This substance contributes greatly to the fire extinguishing action by synergistic effect with ammonium chloride and potassium carbonate.
(3) Sodium bicarbonate retards the abovementioned reaction of (1) at ordinary temperature and plays a role in a stabilization action. Sodium bicarbonate decomposes at high temperatures to emit C02 and performs a part of the fire extinguishing action.
(4) Since the fire extinguishing agent which has been thrown into a fire and diffused is not spread as a gas, and the remaining ammonium chloride and ammonium secondary phosphate and the like cover materials prevent spread of a fire, there is an effect for preventing re-ignition. The water itself has a fire extinguishing action based on a large amount of heat of evaporation (endothermic) and elimination of air by emitted water vapor.
The present invention is illustrated by the accompanying drawings, wherein:
FIG. 1 is a front view of a fluid fire extinguishing agent shell according to the invention.
FIG. 2 is a bottom view of the shell shown in
FIG. 1.
The following Example and Comparison refer to
FIGS. 1 and 2.
EXAMPLE [A] Preparation of Fluid Fire Extinguishing Agent
A stirrer-equipped dissolver having a volume of 1,000 liters is charged with 650 to 700 liters of water. (1) 168.0 kg of NH4C1, (2) 108.5 kg of K2C03, (3) 34.5 kg of (NH4)2HP04, and (4) 20 kg of NaHC03 are gradually added into the dissolver in this order, while keeping the temperature at normal temperature (e.g. 30 to 400C) and actuating the stirrer, followed by dissolving the mixture in water. After completion of the dissolution for 60 to 180 minutes, 350 to 300 liters of water are added thereinto, for dilution. It takes about 50 to about 60 minutes. The solution is colorless and transparent and has a specific gravity of 1.275 and a pH of 9.5 to 10.0.
[B) Production of Fluid Fire Extinguishing Agent Shell
As shown in FIGS 1 and 2, a container main body 1 is composed of red polyvinyl chloride (available under a trade name: Compound), and has a thickness of 0.8 to l.Omm. The body 1 is in a square bottle form, in which a bottom face 4 is approximately a square of 80 mm x 80 mm, and in which a rectangular cylinder (full liquid part) having a height of 160 mm is subject to front connection with a top bung hole 3 and a continuous L-type bent 2. The side periphery of the rectangular cylinder is laterally covered by convexes a, , c, d, and e in a projected state of 2 mm from the side periphery, and concaves d', e', etc. corresponding to these convexes are formed in the inside of the container.The widths of the convexes are set in different sizes such that the width is 12 mm for a, 10 mm for k, 8 mm for c, 10 mm for d and 12 mm for e, respectively. That is, the convexes b, c, and d located in the center portion of the cylinder are formed in smaller widths than convexes a and e, so as to enable a person easily to grip the cylinder and throw it. The edges at which the convexes intersect the concaves are rounded to improve touch. Furthermore, in order to keep harmony with interior decorations in normal times, the cylinder is provided with an aesthetic color (e.g. red). This is a design of expectation such that a person who has the container ready as a fire protection appliance or article always becomes intimate with the container and will effectively use it in case of emergency.Also, a consideration is that when confronted with an unexpected fire, a person can hold body 1 and merely throw it, whereby the purpose of initial fire extinction can be achieved without need of complicated operation. A cap (not shown) is formed by white polypropylene (available under a trade name: Aron Compound), and a packing (not shown) is formed by natural-colored polyethylene (available under a trade name: Softlon).
Body 1 is provided with 800 ml of the abovedescribed fluid fire extinguishing agent and sealed to form a rectangular cylinder shell. The temperature range for use is from -10 to 500C. Because food additives are used in the fluid fire extinguishing agent of the present invention, the agent is non-toxic to human beings and materials, and has an effect for preventing spread of a fire to materials fully wetted by the fluid. Unless a strong physical shock is given to the shell, the efficiency can be maintained for 6 years.
[C) Fire Extinction Test
With respect to performance of a fluid fire extinguising agent shell according to the present invention, the test results (an extract) by Fire
Protection Equipment and Safety Center of Japan (located in Nissho Building, Toranomon 2-chome, Minato-ku, Tokyo,
Japan) are as follows.
(1) Test Method
(a) Ministerial ordinance to stipulate the
technical standards of fire extinguisher
(Ordinance No. 27, Article 3, Item 2 of
the Ministry of Home Affairs of 1964).
(b) Type of fire model: No. 2 model.
(c) Water contents of wood used in the model:
15.0%.
(d) Distance for most closely approaching to
the model: lm.
(e) Precombustion time: 3 minutes.
(2) Test Results
The results of the fire extinction test are given in Table 1 below.
TABLE 1 Number of Throwing Throwing
Test Throwing Tine Person Result 1 3 19 sec. Male (75 Extinguished
years old) 2 3 14 sec. Male (75 Extinguished
years old) [D] Weatherina Test
A fluid fire extinguishing agent shell according to the present invention was allowed to stand outdoors for one month of from 8th of September to the 7th October and exposed to light and air. The bursting pressure of the fluid shell before and after the exposure was measured. The results obtained are given in Table 2 below.
TABLE 2
Bursting
Sample Pressure (Kg) Sample 1 before exposure 2.8
Sample 2 before exposure 2.5
Sample 3 before exposure 3.0
Sample 1 after exposure 2.8
Sample 2 after exposure 2.8
Sample 3 after exposure 2.8
The above data show the more is the figure of bursting pressure is the better.
COMPARISON
Fluid fire extinguishing agent shells were produced by the same procedures as in the Example, except for dissolving a mixture of 180 g of NH4C1, 85 g of
Na2C03,30 g of (NH4)2HP04, and 20 g of NaHC03 in water to obtain a solution having a specific gravity of 1.12 and a
PH of 10 to 11, and using this solution as a fluid fire extinguishing agent.
The thus produced fluid fire extinguishing agent shells were subjected to the fire extinction test in the same manner as in the Example. The results obtained are given in Table 3 below.
TABLE 3
Number of Throwing Throwing
Test Throwing Time Person Results 1 4 21 sec. Male (75 Extinguished
years old) 2 4 22 sec. Female (55 Extinguished
years old) 3 4 19 sec. Male (72 Extinguished
years old)
It can be understood from the results of the
Example and Comparision that the fluid fire extinguishing agent shell according to the present invention has made it possible to effect the fire extinction of the fire model within a shorter period of time, by a smaller number of the fluid fire extinguisher agent shells compared with the previous ones.
A fluid fire extinguishing agent shell according to the present invention has the following characteristics.
(1) Because the shell has such size and shape that it can be easily thrown, fire extinction can be effected by a person of any age or sex throwing the shell into the origin of a firms.
(2) Burnt materials are fire-extinguishable instantly by chemical reaction (instant fire extinguishing action).
(3) The materials which have been once extinguished are never reignited (re-ignition protection action).
(4) Because the burnt materials can be rapidly cooled without oxygen, after the fire extinction, even if they are touched they will not be hot, and a burn can be prevented (rapid cooling action).
(5) Harmful smoke is vaporized (vaporization action).
(6) Because the aqueous solution itself is of no harm to humans or animals, even children can take part in the fire extinguishing activity.
(7) The shell is of low price so that each family can reserve it for sudden need.
Although the present invention has been described in detail above, it will be apparent to one skilled in the art that changes and modifications can be made in the disclosure without departing from the spirit and scope thereof. The invention includes the scope of the claims, drawings, and abstract appended hereto. Numerical quantities in the present invention include quantities "about", "approximately", "precisely", or "substantially" the same as those quantities. The invention also includes a fluid fire extinguishing agent as defined in claim 1, suitable for a shell according to any one of claims 1 to 13, appended hereto.
Claims (14)
1. A fluid fire extinguishing agent shell, comprising a fluid fire extinguishing agent mold packed (e.g. sealed) in a thin-walled container (e.g. a resin container) breakable by suitable shock, said fluid fire extinguishing agent being a mixture comprising all in terms of by weight the components:
from about 48% to about the saturation point of ammonium chloride;
from about 28% to about 38% of potassium carbonate;
from about 8% to about 14% of ammonium secondary phosphate; and
from about 4% to about 8% of sodium bicarbonate;
wherein said components are dissolved in a suitable amount of water.
2. A shell as claimed in claim 1, wherein said thin-walled container has a thickness from about 0.8 to about 1.0 mm.
3. A shell as claimed in claim 1 or 2, wherein said container is a rectangular cylinder.
4. A shell as claimed in any one of claims 1 to 3, wherein said container has a volume of from about 500 to about 1000 ml.
5. A shell as claimed in any one of claims 1 to 4, wherein the material(s) of said container is selected from polyvinyl chloride, low pressure polyethlene, high pressure polyethylene, and polypropylene.
6. A shell as claimed in any one of claims 1 to 5, wherein said'agent is a mixture comprising all in terms of by weight the components:
from about 49% to about 55% of ammonium chloride;
from about 30% to about 36% of potassium carbonate; Xrom about 9% to about 12% of ammonium secondary phosphate;
from about 5% to about 7% of sodium bicarbonate; and
wherein said components are dissolved in a suitable amount of water.
7. A shell as claimed in claim 6, wherein said agent is a mixture comprising all in terms of by weight the components:
about 51% of ammonium chloride;
about 33% of potassium carbonate;
from about 10% to about 11% of ammonium secondary phosphate;
about 6% of sodium bicarbonate; and
wherein said components are dissolved in a suitable amount of water.
8. A shell as claimed in any one of claims 1 to 7, wherein said mixture is dissolved in water in an amount such that said agent has a specific gravity of about 1.20 or higher.
9. A shell as claimed in claim 8, wherein said mixture is dissolved in water in an amount such that said agent has a specific gravity of from about 1.25 to about 1.29.
10. A shell as claimed in claim 9, wherein said mixture is dissolved in water in an amount such that said agent has a specific gravity of from about 1.27 to about 1.28.
11. A shell as claimed in claim 1, substantially as hereinbefore described with reference to the accompanying drawings.
12. A method of fire fighting, comprising utilising a said shell as claimed in any one of claims 1 to 10.
13. A method as claimed in claim 12, wherein said shell is thrown.
14. A fluid fire extinguishing agent as defined in claim 1, suitable for a said shell according to any one of claims 1 to 13.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7091711A JPH08257157A (en) | 1995-03-24 | 1995-03-24 | Fire extinguishing hand-grenade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9517768D0 GB9517768D0 (en) | 1995-11-01 |
| GB2299020A true GB2299020A (en) | 1996-09-25 |
Family
ID=14034105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9517768A Withdrawn GB2299020A (en) | 1995-03-24 | 1995-08-31 | Fire extinguishing agent for use in a throwable container |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH08257157A (en) |
| KR (1) | KR960033487A (en) |
| GB (1) | GB2299020A (en) |
| SG (1) | SG49557A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2311220A (en) * | 1996-03-22 | 1997-09-24 | Ebisu Science Lab Inc | Fluid fire extinguishing agent shell for throwing |
| US7389825B2 (en) | 2006-04-10 | 2008-06-24 | Fireaway Llc | Aerosol fire-retarding delivery device |
| US7461701B2 (en) | 2006-04-10 | 2008-12-09 | Fireaway Llc | Aerosol fire-retarding delivery device |
| US7614458B2 (en) | 2006-04-10 | 2009-11-10 | Fireaway Llc | Ignition unit for aerosol fire-retarding delivery device |
| US7832493B2 (en) | 2006-05-04 | 2010-11-16 | Fireaway Llc | Portable fire extinguishing apparatus and method |
| CN104759052A (en) * | 2015-04-09 | 2015-07-08 | 刘树民 | Throwing type dry powder extinguisher |
| CN104258529B (en) * | 2014-09-16 | 2017-02-22 | 温州安顺消防设备有限公司 | Portable fire extinguishing bottle |
| CN107308582A (en) * | 2017-08-31 | 2017-11-03 | 合肥益企学科技有限公司 | A kind of fire-fighting collection water polo acted on choked flow |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100437661B1 (en) * | 2002-01-02 | 2004-06-25 | 이왕수 | A Liguicl Extinguishing Chemicals |
| KR100563741B1 (en) * | 2004-07-14 | 2006-04-04 | 김진호 | Composition of reinforced liquid extinguishing agent |
| US7784455B1 (en) | 2007-09-18 | 2010-08-31 | Chong Carlton Le Loong | Reusable pellet shooting grenade |
| JP5725500B2 (en) * | 2011-02-01 | 2015-05-27 | 株式会社ヱビス科学研究所 | Fire extinguishing liquid and simple fire extinguishing tool filled with the same |
| CN103476463B (en) * | 2011-12-15 | 2015-11-25 | 中岛浩幸 | The preparation method of petroleum fire extinguishing chemical and throwing type fire annihilator |
| JP2014054317A (en) * | 2012-09-11 | 2014-03-27 | Nippon Sakudory:Kk | Throwing fire extinguishing device and method for manufacturing the same |
| WO2017094918A1 (en) * | 2015-12-05 | 2017-06-08 | 準 森田 | Method for manufacturing fire extinguishant, and fire extinguishant |
| US10946228B2 (en) | 2016-08-10 | 2021-03-16 | Ff Technologies Inc. | Fire-extinguishing liquid agent and fire-extinguishing equipment loaded with said fire-extinguishing liquid agent |
| US20230128375A1 (en) * | 2020-03-13 | 2023-04-27 | Yamato Protec Corporation | Fire extinguishing and fire spread preventing agent composition and fire extinguishing and fire spread preventing agent including the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2161379A (en) * | 1984-07-10 | 1986-01-15 | Ebisu Science Lab Inc | Hand-grenade type fire extinguisher |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57192573A (en) * | 1981-05-25 | 1982-11-26 | Hochiki Co | Fire fighting agent |
| JPS58109072A (en) * | 1981-12-21 | 1983-06-29 | ホーチキ株式会社 | Fire fighting agent for tempura oil fire |
| JPS58127668A (en) * | 1982-01-27 | 1983-07-29 | エビス化学工業株式会社 | Pack for throwing type liquid fire extinguishing agent |
| DE3853073T2 (en) * | 1988-07-11 | 1995-08-10 | Jon L Curzon | FIRE EXTINGUISHING MEDIA. |
| JPH03212278A (en) * | 1990-01-18 | 1991-09-17 | Nippon Dry Chem Co Ltd | Extinguishing agent for oil fire |
-
1995
- 1995-03-24 JP JP7091711A patent/JPH08257157A/en active Pending
- 1995-07-14 SG SG1995000870A patent/SG49557A1/en unknown
- 1995-08-03 KR KR1019950023921A patent/KR960033487A/en not_active Application Discontinuation
- 1995-08-31 GB GB9517768A patent/GB2299020A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2161379A (en) * | 1984-07-10 | 1986-01-15 | Ebisu Science Lab Inc | Hand-grenade type fire extinguisher |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2311220A (en) * | 1996-03-22 | 1997-09-24 | Ebisu Science Lab Inc | Fluid fire extinguishing agent shell for throwing |
| GB2311220B (en) * | 1996-03-22 | 1998-10-21 | Ebisu Science Lab Inc | Fluid fire extinguishing agent shell for throwing |
| US7389825B2 (en) | 2006-04-10 | 2008-06-24 | Fireaway Llc | Aerosol fire-retarding delivery device |
| US7461701B2 (en) | 2006-04-10 | 2008-12-09 | Fireaway Llc | Aerosol fire-retarding delivery device |
| US7614458B2 (en) | 2006-04-10 | 2009-11-10 | Fireaway Llc | Ignition unit for aerosol fire-retarding delivery device |
| US7832493B2 (en) | 2006-05-04 | 2010-11-16 | Fireaway Llc | Portable fire extinguishing apparatus and method |
| US8146675B2 (en) | 2006-05-04 | 2012-04-03 | Fireaway Llc | Portable fire extinguishing apparatus and method |
| CN104258529B (en) * | 2014-09-16 | 2017-02-22 | 温州安顺消防设备有限公司 | Portable fire extinguishing bottle |
| CN104759052A (en) * | 2015-04-09 | 2015-07-08 | 刘树民 | Throwing type dry powder extinguisher |
| CN107308582A (en) * | 2017-08-31 | 2017-11-03 | 合肥益企学科技有限公司 | A kind of fire-fighting collection water polo acted on choked flow |
| CN107308582B (en) * | 2017-08-31 | 2021-06-11 | 绍兴迪艾仕机械设计有限公司 | Fire control water collection ball with choked flow effect |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960033487A (en) | 1996-10-22 |
| SG49557A1 (en) | 1998-06-15 |
| JPH08257157A (en) | 1996-10-08 |
| GB9517768D0 (en) | 1995-11-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |