WO2002026328A1

WO2002026328A1 - Fire extinguisher with disposable gas container

Info

Publication number: WO2002026328A1
Application number: PCT/FI2001/000839
Authority: WO
Inventors: Camilla Pelin
Original assignee: Caminno Consulting Oy AB
Current assignee: Caminno Consulting Oy AB
Priority date: 2000-09-27
Filing date: 2001-09-27
Publication date: 2002-04-04
Anticipated expiration: 2003-03-27
Also published as: FI20002120A0; AU2001291916A1

Abstract

The invention relates to an extinguisher, which consists of a gas container (1) which contains smothering and cooling gas, such as carbon dioxide (CO2), of an extinguisher trigger (3) and of a gas control nozzle (4). The gas container (1) is a 'disposable container', having at its end a burst film (2), which can be penetrated by the trigger (3) during the use of the extinguisher. The extinguisher is small-sized and economical compared to known extinguishers.

Description

Fire extinguisher with disposable gas container

This invention relates to an extinguisher, which consists of a gas container containing smothering and cooling gas, such as carbon dioxide (C0₂), of an extinguisher trigger and of a gas control nozzle.

Carbon dioxide extinguishers have proved extremely efficient in use owing to their double effect of smothering and cooling. What is more, carbon dioxide extinguishers do not leave traces of liquids, powders or toxic substances. The only drawback of carbon dioxide extinguishers is that they are very expensive. Since the extinguishers are usually expensive, people do not acquire them for their homes, cars etc, unless they are compulsory, as for instance for registered boats, car parks etc. The purpose of this invention is to eliminate the drawbacks mentioned above and to provide an extinguisher whose price is low enough not to be an obstacle for its acquisition. The extinguisher of the invention is characterised by a "disposable" gas container, having a burst film at its end, which can be perforated with a trigger when the extinguisher is used. The extinguisher is specifically intended to put out small fires, such as fires in grease pans, frying pans, barbecue grills, household machines, television sets and even electric wires and fuels in cars. Small fires rapidly develop into quite great fires unless even a small extinguisher is quickly available. Small economical extinguishers can be kept next to the stove in kitchens, on the wall in sitting rooms or sculleries, as a safety device in barbecues, in the glove compartment of cars, etc. When the purchase price of an extinguisher is reasonable, it will no longer be an obstacle for acquiring the extinguisher. The extinguisher may be a business or promotional gift, an accessory of fire treating products, such as barbecue grills mentioned above. Each car should be equipped with the "mini-extinguisher" of the invention. The extinguisher allows small starting fires in electric wires, liquid fuel leakages, etc. to be easily and quickly put out.

Various embodiments of the invention are set forth in the dependent claims of the set of claims.

The invention is explained below with the aid of an example and with reference to the accompanying drawing, which shows an extinguisher in longitudinal cross- section. The extinguisher consists of a gas container 1, which contains smothering and cooling carbon dioxide. The gas container 1 is a disposable container having at its end a burst film 2, which can be perforated with the trigger needle 3 when the extinguisher is used. The trigger needle is a tube resembling an injection needle, through which gas is released from the gas container. The body portion of the extinguisher consists of two successive tubes 4, 5, which are connected to each other by threads and can be mutually rotated such that the needle 3 penetrates the burst film 2 of the gas container 1 , allowing gas to flow out through the one tube 4 acting as a nozzle. The gas container 1 is located in the other tube 5, which also acts as an extinguisher handle during the use of the extinguisher. The pitch of the thread between the tubes 4, 5 is about 3-4 mm, the film 2 being burst with an approx. 1/4 rotation, upon which the extinguisher starts operating immediately. Test have proved that a 33 g carbon dioxide container emitting about 20 1 of carbon dioxide gas easily puts out fires in barbecues, cooking oil pans and even small petrol fires.

Claims

1. An extinguisher consisting of a gas container (1) containing smothering and cooling gas, such as carbon dioxide (C0₂), an extinguisher trigger (3) ^; and a gas control nozzle (4), characterised in that the gas container (1) is a "disposable container", having at its end a burst film (2), which can be penetrated with the trigger (3) during the use of the extinguisher.

2. An extinguisher as defined in claim 1, characterised in that the gas container (1) contains about 30 to 100 g of C0₂.

3. An extinguisher as defined in claim 1 or 2, characterised in that the extinguisher consists of two successive tubes (4, 5), which are connected to each other and rotatable relative to each other, and which hold a trigger (3), which under rotational movement penetrates the burst film (2) on the gas container (1), allowing gas to flow out through the one tube (4) acting as a nozzle, whereas the other tube (5) acts as an extinguisher handle and a gas container holder.

4. An extineuisher as defined in claim 1 or 2, characterised in that the extinguisher

AMENDED CLAIMS

[received by the International Bureau on 04 February 2002 (04.02.02); original claims 1-5 replaced by new claim 1 (1 page)

An extinguisher consisting of a gas container (1) containing smothering and cooling gas, such as carbon dioxide (C0₂), an extinguisher trigger (3) and a gas control noz- zle (4), wherein the gas container (1) is a "disposable container", having at its end a burst film (2), which can be penetrated with the trigger (3) during the use of the extinguisher, and the extinguisher consists of two successive tubes (4, 5), which are connected to each other and rotatable relative to each other, and which hold a trigger (3), which under rotational movement penetrates the burst film (2) on the gas container (1), allowing gas to flow out through the one tube (4) acting as a nozzle, characterised in that the pitch of the thread between the tubes (4, 5) is about 3-4 mm.