Fire extinguishers – Apparatus which isolates flames from non-burning area – With means to isolate fire from atmosphere and extinguish
Patent
1997-09-08
1998-12-01
Kashnikow, Andres
Fire extinguishers
Apparatus which isolates flames from non-burning area
With means to isolate fire from atmosphere and extinguish
169 48, 169 49, 431144, A62C 808
Patent
active
058425250
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a fire extinguisher particularly, but not exclusively, for use in extinguishing oil or fat fires.
Deep frying is a method of cooking which involves raising the temperature of cooking oil or fat to approximately 180.degree.-190.degree. C. If the temperature is allowed to rise for a further 5 to 10 minutes, the heated oil or fat can self ignite creating a serious fire hazard.
The accepted method of extinguishing fires involving cooking oil or fat in pans is to cover the pan with a fire blanket made of proprietary fabrics. This can be a very dangerous process as it involves bringing the hands holding the fire blanket over the top of the burning pan. There is also the risk of the pan being tipped over by the weight of the fire blanket, spilling the hot oil/fat. This method of extinguishing the fire demands a level of skill for it to be achieved safely and effectively without sustaining burn or scald injuries.
According to United Kingdom fire statistics nearly half of reported accidental dwelling fires each year are attributed to fires starting in cooking oil/fats. These fires are the cause of over 4,000 non-fatal casualties each year. The majority of these injuries are incurred while attempting to extinguish or control oil or fat fires.
According to the present invention there is provided an extinguisher for extinguishing pan fires, comprising a frame, a handle connected to the frame, resilient means connected to the frame and smothering material connected to the frame, the resilient means being movable between a stored position in which the extinguisher may be stored in a holder and an operative position in which the smothering material is automatically extended by the resilient means.
In a preferred embodiment, the handle and/or frame may be made from metal or synthetic plastics material. The handle and/or frame may be wire or stamped or pressed out or moulded. The handle and/or frame may be formed to provide positioning means. The resilient means may be a spring preferably a helical spring. The handle and frame may be pivotally connected to enable the handle to be folded with respect to the frame. The smothering material may be connected to the resilient means by stitching.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in which:
FIG. 1 shows the extinguisher ready for use in a plan view,
FIG. 2 shows a side elevational view of part of the extinguisher of FIG. 1,
FIG. 3 shows an end elevational view of the part shown in FIG. 1,
FIG. 4 shows a plan view of the part shown in FIG. 1,
FIG. 5 shows a plan view in section of the extinguisher housed in a holder, and
FIG. 6 shows a side elevational view of the extinguisher of FIG. 5.
Referring to the drawing, the fire extinguisher comprises a frame 1, handle 2, folding arm 3 and smothering material 4.
The frame 1 and handle 2 can be made of wire forms, metal pressings, stampings of forms and mouldings of other natural or man-made suitable materials or combinations of these. The handle may be made to fold for compact storage. The handle 2 may be pivoted with respect to the frame 1 through 180.degree., between a first position in which the handle 2 overlies the frame 1 and a second position in which the handle 2 extends substantially in line with the handle 2. In cross section (see FIG. 3), the frame has an inverted U-shape at opposite ends thereof to accommodate a pan handle on which the extinguisher is to be used. These ends also provide a positioning lip to facilitate the positioning of the extinguisher on the pan.
The folding arms 3 are resilient. In this example they comprise helical springs which are attached to the frame 1. For this purpose the frame 1 has extensions 5 which are inserted into the open ends of the adjacent helical springs. The smothering material 4 is attached to the folding arms by stitching or by rivets or other means which are resistant to heat and flames.
The resilient folding arms of the frame can alternatively be made of flat springs or pr
REFERENCES:
patent: 3283826 (1966-11-01), Padellford
patent: 4602611 (1986-07-01), Hankey
Deal David
Kashnikow Andres
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