CA2028066A1 - Lighter device - Google Patents

Abstract

LIGHTER DEVICE
ABSTRACT
A lighter device is described featuring a new burning system which is of a rugged structure and comprises relatively few parts whic are easy to manufacture and to assemble. The novel burning system provides for reliable operation of the device over and extended period of operable life.

The novel burning system comprises combined vaporizer-and-burner unit in the form of a short metal tube arrangement comprising two sections of metal tube axially aligned with one another. The upper section may have a larger diameter than the lower section. The combined vaporizer-and-burner unit is arranged as a separate member separately from and above the nozzle in a predetermened vertical distance therefrom. A perforated metal sheet partitions the two tube sections of the vaporizer-and-burner unit thus providing for additional intensive mixing and vaporizing the gas stream entering at the lower end of the unit and ambient air drawn Cont'd/1 into the unit by the gas jet. In the upper section of the vaporizer-and-burner unit there is a catalyzer wire which will provide for re-ignition of the gas/air mixture in case the lighter flame would become extinguished by ambient wind flow.

Cont'd/2

Description

~- 202~066 BACKGROUND AND SUMMARY OF THE INYENTION :
The invention relates to lighter devices of ths well-known type ~herein on actuation thsreof a jet of a suitable fuel such as pressurized liquid butane gas will burst out from a nozzle-valve aggregate and will be met by ignition sparks simultaneously generatsd by an associated : " ~ . ~ . :.
ignition system whereby to provide a burning flame, e.g. for ;
lighting tobacco products such as cigarettes or cigars.
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,.,~,-"~''.',' .',;,., Presently, there are essentially two main types of ; ;
such butane gas lighter, namely low standard disposable ,~, .. .
butane lighters (one way gas lighters), and high quality . ~, ., ~ , wind-proof butane lighters.

Of these, the former type (10N standard disposable butane lighters) substantially have the following two main deficiencies: In the actuated condition the flame is . ", ~
burning direotly on top of the nozzle from which the fuel bursts out, thereby directly heating the nozzle Parts and : . ,:, ,, -, tending to impair and ultimately destroy the rubber O-ring ~ i ;
!' ' and rubber nail inside the nozzle-~alve aggregate for Cont'd/3 ~ . ~ ....
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controlling the butane gas flow. While this impairment of the nozzle parts may be tolerable to a certain degree in a desposable (one way~ cheap lighter, it would obviously unduly limit the useful life of a better quality lighter devioe.
Even in the low cost disposable devices this direct heating of the nczzle by the flame unduly limits the admissible strength of the flame to a very weak flame. This in turn causes the second deficiency of this type of lighter, namely its inherent lack of wind-proff characteristics inasmuch the weak flame is undesirably subiect to extinction by even light ambient wind impact. ~;

As regards the other main type, namely high quality wind-proof butane lighters, they suffer substantially from three deficiencies. While in this type a speclal burning chamber in the form of a short metal tube is ~-~
provided distant from the nozzle, this short metal tube is directly connected with the nozzle through a long pipe to guide the butane from the the nozzle to the short metal tube serving as the burning space. Inside said long connecting " ~ 20 tubeithere is a rubber layer for providing flexibilitY to the Cont'dJ4 , ~ ' .

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arrangem~nt whereby to maintain the connection between the burning space and the nozzle. Further connection parts are required for providing connection between the burning space (short metal tube), the long connection pipe and the no~zle and valve aggregate. On actuation of the lighter the flame will burn right on top of the long connection pipe. Thus, the long pipe will be directlY heated by the flams burning on top of it which tends to impair and hurt the rubber cladding on the inside of the connector pipe and other assembled parts.
The long connector pipQ also provides dirct heat transfer between th0 flame and the nozzle, with a tendency of the latter also becoming (indirectly) heated by the lighter . .: ~.
flaDe, with concomitant damage to the nozzle parts. These effects of undesired direct and indirect heating of the long pipe and th0 nozzle combine to unduly limit the useful opsrativ~ life of the device. Further, the constituent parts of this burninng system: short metal tube, long pipe, connection parts, noz21~ and its controlling vlave, had to be precision-assembled; precision assembly may be impaired by shock impact in use of the device, whereby the device might become inoperative, such as if the movable long pipe would Cont'd/5 '.'.~..` :>
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loose its contact with the nozzle. Finally the larger number of constituent parts of this known burning system and the criticality of precisely assembling these parts obviousl tend to undesirably increase the production cost of these devices.
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The present invention relates to a lighter device of the general type comprising -a lower housing portion housing a fuel tanh containing fuel under pressure, preferably pressurized butane fiquid gas fuel, ' ~.-a nozzle-and-valve agregate connected with said fuel tank and arranged to project form said lower housing ~ :
portion towards a burning space provided in the upper portion of the lighter, .
-a burning system comprising a tube-like burner member associated with and arranged above said nozzle-and-vlave aggregate, -an ignition system preferably mounted on the upper portion of the lighter and arranged to provide, on actuation thereof, ignition sparks to said burning space, Cont'd/6 : -:

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-actuating means for said valve of said nozzle-and-valve aggregate, for switching said valve from its ~ ~
normally closed condition into its open condition, in ----dependence on and coordination with actuation of said --S ignition system, whereby to permmit a jet of said ~ :
pressurized fuel to burst out from said nozzle towards said ~ n~
burning space.

It IS and object of the present invention tio ~`
provide a lighter device of the forementioned general type which will avoid the deficlencies~of the known devices of .
the prior art;~particularly, the devica should be of a more . ~
ruggad constructlon~ and~ hence~ aasy to manufacture~ at~ ~r''"'~'''' relativelY ~low cost,~should have incre-sed ~rsliability of operatlcn~over an sxtended~period~of~useful life, ind should ~ Provlde ~a~st~ron~ f~lane and~have ~particular wind-Proof capabilities. To this purpose, in a lighter~device of the ~ s - --;foreDentioned ~trpe provision ls made~in accordance with the resent~lnvent1on;that:
-sald burning ~system comprises a coubined tube ; 2l llka vaPcrlzer-anl-bu mer untt ~lall~ allgned with thr ..e~

2n2~0~6 nDzzle-and-valve aggregate, -said tube-like vaporizer-and-burner unit is vertically Positioned with its lower end at a predetermined free distance above said nozzle-and-vlave aggregate and cleared thersfrom bY said free distance, -the lower end of said tubs-like vaporizer-and-burner unit has a diameter larger than the diameter of said nozzls.

Thus, in accordance with one basic feature of hte :~
present invention, the short tube vaporizsr and burner unit ~.
is Provided as a separate member mounted separately and in-dependent from the nozzle valve; thus there is no direct mechanical connection and correspondingly no direct heat ~ h~
conduction or heat transfer between the burner unit and the nozzle and valve aggregate, uhereby impairment Df the latter by heat form the burner unit is affectively avoided or ~ ~:
diminished. At the same time, there will be no undue limitation on the size and temperature admissible for the flame which therefore can be a strong, hot, blue-colour flame which in itself has a substantial wind-proof C~nt'd/B

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202~66 !

capability. The strong flame is al~o enaoled by the feature that the lower end of the vaporizer-and-burner unit arranged in a predetermented distance above the nozzle has a larger diameter than the nozzle wherebY the jet stream bursting out from the nozzle ~ill be substantially completely received in ~ -~
the lower end of the vaporizer unit and simultaneously Nill darw ambient air into the vaporizer-and-burning unit NherebY
to intensely mixing and vapori2ing the butane gas/air : :
mixture.

In accordance uith a further important feature of the present invention, said combined tube-like vaporizer-and-burnsr unit is partitioned into two axially aligned compartments by a horizontally extending perforated partition wall, preferably a piece of perforated metal sheet. This 15 perforated metal sheet effectively contributes to further intensely mix and vaporize the butane/air mixture, thus ;, providing for a particularly efficient type of "turbo :
burning". : -In accordance with a further important feature of Cont'd/9 . '~,; ~ ' `"
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the present invention, a catalyzer wire is prnvided within ~ ~ ;
said tube-like combined vaporizer-and-burner unit in the ~ -upper section thereof. Thereby, In case the lighter flame '-previously ignited would become extinguished by a strong wind-blow or some other cause, the heated catalyzer Nire will automatically re-ignite fresh vaProized butane/air-mixture which continues to be fed into the ~aporizer-and-burner unit - ;
as long as the actuating member of the nozzle vlave is kept -pressed in its actuated state.

Generally thus the invention provides for a sinple to manufacture lighter which will provide reliable operation ~;
over an extended long useful life, andhas improved wind-proof ;
characteristics by an automatic re-igniting capability.
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:,; -BRIEF DESCRIPT~ON OF THE DRAWINGS
Figure 1. through 3 are side elevational views of a first embodiment of a lighter in accordance with the invention, with Figure 2 and 3 being partially sectioned to show details of the inner structure of the device. ~ ;
Figure 4. shows a top end view of the lighter ~ ~
Cont'd/10 ~ ;

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device of Figure 1 through 3, partiallY sectioned.
Figure 5. shoNs the same lightar device in a partially sectioned top end view similar to Figure 4, with the ignition wheel and parts of the burning system being `~
omitted to show the parts beneath.
Figure 6. is a sectional top view of the wind ~ -shield showing the mounting or holding member for the burning system.
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Figure 7. is a partially sectioned top end YieW -~
similar to Figure 4, with the catalyzer wire in the upper ~;
section o~ the burning unit being omitted whereby to show the perforated partition wall with holes therein.
Figure a shows the same embodiment of the lightar ; ' in a partially sectioned elevational side view similar to `
Flgure 3i with the actuator for the vlave being in its actuated or depressed position and with the flame burning on top of the vaproizer-and-burner unit.
Figuro 9~ IS a ~partlally sectioned elevationed ~~ side-view of another embodiment of the invention using a piezo electric ignition unit instead of the flint stone ignition uni~t in the embodiment Figure 1 throuh 8. 1 ` ',-,','`,"''.'',~-''`'`',L' Cont'd/ll ~....; ~- ..

20280~6 :

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-DETAILED DESCRIPTION OF THE PREFERRED EMBODI~ENT
In the preferrad embodiments described the lighter of the present invention comprises, in a manner general known, a lower partion generally designated at 1 and an upper portion generally designated at 2. Lower portion 1 in conventional manner forms, or contains, the tank for the fuel used, preferably liquid butane gas under pressure, or some other conventional lighter fuel. The lighter upper portion 2 comprises upper seat member 3 mounting the (conventional) ignition and actuation mechanisms and the nozzle and valve mechanism to be described further below, and uind shield 4 mounting and enclosing the specific vaporizer and burner . .. . .
members of the present invention to be described hereinafter.

The vaporizer and burner unit of the prasent invention is the form of a short metal tube member generally designated at 5. Vaporiz~r and burner unit 5 in the preferred e~bodiment as shown and described consists of two relatively short tube sections 6,7 arranged coaxially with one another one above the other along the cammon axis. Prefarably, the two sections 6,7 form a unitary structure.
Cont'd/12 The forementioned unitary vaporizer and burner structure 5 is mounted on wind-shield 4, by means of a horse-shoe-shaped mounting or holding member 8 which as is best -~
seen from Figure 6 horizontallY extends inwardlY from the inner wall of wind-shield 4, and accommodates, with its ;~
horse-shoe-shaped portion, the vaporizsr and burning unit 5 at a predehereinafter described. In the preferred embodiement shown the two tube sections 6,7 of the short metal tube aggregate 5 have different diameters, the upper tube sectio;n 7 having a larger diameter than the lower tube section 6, whereby a step 9 is formed at the junction of the two tube sections. Horizontal step 9 thus formed provides a convenient -- -mounting face which rests upon, and is affixed to, the horse-shoe-shaped Portion of mounting and holding member 8. .-~

The (substantially conventional) nozzle and vlave aggregate 10 is arranged in the upper portion of the portion of the ieft Part (as~sbowD in the draw m g) of uppe~r seat - ~;
member 3, wi~th nozzlé I~O~projecting from and above the upper and of said left portion of upper seat member 3. A
conventional flow regulator 11 for controlling the flow Cont'd/13 , -;~ . .. ,.: . ", .. .

volume of liquid butane gas passing through nozzle 10 in its open condition and thus regulating the size of the flame, is associated with the nozzle and valve aggregate 10 and prcjects horizontally from the side wall of the lighter casing, for actuation by the user to control the flow volume and thereby the size of the flame.

The (substanially conventional) ignition and actuation mechanisms are mounted on the right hand portion (as shown in the drauings) of upper seat member 3. In the embodiment shown in Figure 1 through 8, the ignition mechanism is of the well-known mechanical tYPe comprising a hand-actuated ignition wheel or drum 11 and flint 12 arranged for cooperation therewith. As can be seen more clearly from the top view shown in Figure 4 ignition wheel or drum 11 comprises two knurled and sections 12, 13 of slightly larger diameter for actuation by the user, and a main section 14 of slightly smaller diameter and having a suitably roughened surface wherebY to struck Ignition sparks from a flint stone lS arranged to cooperate with the ignition wheel, on actuation thereof. Ignition wheel or drum 11 slightly Cont'd/14 projects from the upPer end of wind-shield 4, for actuation by the user, and flint stone 15 is preferably arranged below the horizontally mounted ignition wheel or durm 11 in a ~
;
manner that ignition sparks when generated on actuation of wheel or drum 11 will be directed towards the upper end of vaporizer and burner unit S within wind-shield 4. -~

The (substantially conventional) actuating ..
mechanism for nozzls and valve aggregate 10, in the embodiment dacribed comprises an actuating lever 16 swivable .`~
mounted below ignition wheel/flint stone aggregate 11, 15 and substanially extending horizontallY. At its right end (as shown In the figures) actuating lsver 16 is providad with a ,,,,j,'.~","'!~,"."
larger actuating portion 17 suitably assocated with ignition ;~
wheel or drum 11 in a anner that if the user actuates, with .
the thumb of the hand bolding the lighter, lighter, ignition wheel 11, the thumb will come to prsss upon actuating ;
portion 17 of lsvsr 16 whsrsby to prsss lever 7 to swivel from the substantially horizontal normal or rest position r, I , I shown in Figure 1, 2 and 3, into the actuated position shown - .
in Figure 8 where actuating lever 16 is shown swivellsd in Cont'd/15 .

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the clock-wise direction abou~ its pivot 18. At its end opposite actuation portion 17, actuation lever 16 pivotably engages with the upper end l9a on the vertical arm Df a sub~tantially L-shaped bracked 19, the lower substantiallY -horizontal arm 20 of which engages with the nozzle and valve aggregate 10 for actuation thereof between a closed valve .
condition as shown in Figure 1 through 3 and an open valve ; ;
condition as shown in Figure 8. ~.
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In accordance with one basic feature of the present invention, the short-tube vapori~er and burner unit :
5, with its vertical longitudinal axis aligned with nozzle .~
and valve aggregate 10, is arranged vertically such that the ~ :-lower end of unit 5 (i.e. the lower end of the lower .
tube section 6 of unit 5) will be in a predetermined free height above nozzle 10. Thus there will be no direct nechanical connection between the nDzzle and valve aggregate 10 and (the lower end of) vaPorizer and burning unit 5, and correspondingly no direct heat conduction or heat transfer between burner unit 5 and nozzle and valve aggregate 10. . :

Cont'd/16 ~: .
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In accordance with another important feature of ~ ~
tha present invention, the diameter Df the lower end 6 Df ~ :
vaporizer and burner unit 5 will be larger than the diameter of nozzle 10 of the butane gas tank wherebY the (liquid) butane gas jet eiected from nozzle 10 (in the actuated open valve condition thereof) on its way upward into vaporizing and burner unit 5 will draw a stream of ambient air into unit 5, for intensive mixing with, and vaporizing of, the butane - ;
gas stream in the lower part of unit 5. .-~.

In this connection, in accordance with a further ,-~
important feature of the present invention, a piece of -perforated metal sheet is provided horizontally at the junction between the upper and lower sectins 7, 6 of unit 5.
~ This perforated metal sheet 21 is best shown in the enlarged ~ 15 scale top viaw of Flgure 7. This perforated metal sheet effectively contributes to further intensely mix and `~
vaporize the butane-air mlxture, thus providing for a particularly efficlent:type off "turbo"-burning.

, l , Further, in connection uith and additional basic Cont'd/17 `.

~ , . ~,. ,~, ~ = `~'`' 202~066 feature of the present inventian, a catalyzer wir~ 23 is provided centrally in the upper section 7 of burner unit 5.
The catalyzer wire 23 may be in the form of a wire spring as shown at 23 in Figure 3, or as a wire net or in some other S similar equivalsnt form admitting of substantially admittin~ :
of substantially uninhibited flow of ths vaporized gas/air mixture while providing for a distributed contact with such stream. Thereby, in case the lightar flame previously ignited would become extinguishsd by wind ar some ather cause, the flame wauld autamatically be re-ignited by the cantact ~-batween the (hot) wire or net 23 getting into contact with -the fresh vaporized gas/air mixture continuing to stream upwards, as long as actuating member 17 is maintained in its depressed pasition corresponding to the open-valve-condition .
of nozzle aggregate 10.

As mentioned, in accordance with a basic feature of ~ - p the pressnt invention vaporizer and burner unit 5 is arranged vsrtically in a prsdetermined vsrtical distance above nozzle :~
10. On the othsr hand, vaporizer and burning unit 5 is ao vsrtically positioned such that its upper end is in the Cont'd/18 ~ :

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- 2~2~66 ~-vicinity of the ignition sparks travelling in a substantiallY
horizontal tangential direction from the point of contact between flint stone 15 and ignition wheel or drum 11, 14.

Thus, in the lighter of the present invention, the burning space substanially will be between the upper end 7 of unit 5, and thus will be as far removed as possible from the delicate nozzle and valve aggrsgate 10. AdditiDnallY~ as there is no direct heat conducting mechanical connection ;~~
between vaporizer and burner unit 5 and the nozzle valve ;~`
aggregate 10, the latter will be effectively protected against hsat from the burner or the flame. .

The operation of the lighter device of the present invention uill be obvious from the description above and can be summarized as follows Actuation of ignition wheel or drum 11 will cause the generation of ignition sparks form flint stone 15 cooperating with uheel or drum 11, said ignition sparks being -~ :
! ' I . direçted towards the (upper end of)vaporizer and burner unit Cont'd~l9 " ~

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5. The simultaneous actuation, by the user, of actuating lever 17 will cause nozzle valve 10 to opisn whereby a jet of liquid butane will burst out from nozzle 10, and on its further high velocity stream upward will draN surrounding ambient air (oxygen) into the lower part 6 of vaporizer and burner unit 5. Vaporization of the butane liquid gas and mixing thereDf with the air sucked into the lower end 6 of unit 5 will continue within the lower part 6 of unit 5 and will be further intensified and continued during the passage of the mixture through the holes 22 of perforated metal sheet 21 and during further passage of the mixture through the upper part 7 of unit 5. On reaching the upper end 7 of unit 5, the fully and intenselY mixed vaporized butane/air (ozygen) mixture will be ignited by the ignition sparks from flint 15 and will burn in a strong, stable, hot blue-cDlor flame 24, as indicated in Figure 8.

If flame 24 should happen to be extinguished by a strong wind bloN or some similar exterior cause, the heated wire catalyzer 2~ provided in the upper part 7 of unit 5 will automatically re-ignite fresh vaporized butane/air-mixture Cont'd/20 which continues to be fed from the nozzle at the lower part of unit 5, as long as actuating member 7 is kept in its pressed actuated state. -The invention thus provides for a simple to manufacture lighter uhich will provide reliable operation ~
aver an extended long useful life, and with improved wind~ P
proof characteristics by an automatic re-igniting capability.

The embodiment described thus far in connection with Figure 1 through 8 utilizes a conventional ignition drum/flint stone-ignition system. Howevsr, the present invention lends itself equally for utilization in connection with lighter devices employing other ignition systems, such ~ `
as a piezo unit ignition system known per se. An embodiment of this type is shown in Figurs 9, wherein the same or similar parts are designated with the same reference numerals ~:
as in Figure 1 through 8. The Figure 9 embodiment differs from the Figure 1 through 8 embodiment by the utilization of piezo type ignition system instead of the flint stone , ignition system. As shown in Figure 9, a suitable piezo unit Cont'd/21 `~
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~2~6 25 is mounted in the right-hand part (as shown in Figure 9) of the upper seat member 3, below and suitably aligned with actuating laver 16, 17. ~n actuating member 26 for ths piezo unit 25 is associated with actuating lever 16, 17 wherreb piezo unit 25 will be actuated if actuating lever 16, 17 is ;~
pressed down for actuation of the lighter.
,, The electrical output lines 27 of the piezo unit 25 are suitably connected with parts in the vaporizer-and-burner unit 5, whereby a spark will be generated within unit 5 on actuation of piezo unit 25, and the gas/air mixture passing through unit 5 will be ignited to form a strong flame burning on top of section 7 of unit 5.

Cont'd~22

Claims (11)

1. Lighter device of the type comprising a lower housing portion housing a fuel tank containing fuel under pressure, preferably pressurized butane liquid gas fuel, a nozzle-and-valve aggregate connected with said fuel tank and arranged to project from said lower housing portion towards a burning space provided in the upper portion of the lighter, a burning system comprising a tube-like burner member associated with and arranged above said nozzle-and-valve aggregate, an ignition system preferably mounted on the upper portion of the lighter and arranged to provide, on actuation thereof, ignition sparks to said burning space, actuating means for said valve of said nozzle-and-valve aggregate, for switching said valve from its normally closed condition into its open condition, in dependence on and coordination with actuation of said ignition system, whereby to permit a jet of said pressurized fuel to burst Cont'd/23 out from said nozzle toward said burning space, said burning system comprises a combined tube-like vaporizer-and-burner unit (5) axially aligned with the nozzle-and-valve aggregate (10), said tube-like vaporizer-and-burner unit (5) is vertically positioned with its lower end (6) at a predetermined free distance above said nozzle-and-valve aggregate (10) and cleared therefrom by said free distance, the lower end of said tube-like vaporizer-and-burner unit (5) has a diameter larger than the diameter of said nozzle (10).

2. Lighter device in accordancewith claim 1, Characterized in that said combined tube-like vaporizer-and-burner unit (5) comprises two short-tube sections (6,7) of different diameter, axially aligned with one another and forming a unitary structure.

3. Lighter device in accordance with claim 2, Characterized in that the upper tube section (7) of said combined vaporizer-and burner unit (5) has larger diameter than said Cont'd/24 lower tube section (6).

4. Lighter device in accordance with any of the preceding claims, and preferably as claimed in claim 2 or claim 3, Characterized in that said combined tube-like vaporizer-and-burner unit (5) is partitioned into two axially aligned compartments (6, 7) by a horizontally extending perforated partition wall (21), preferably a peice of perforated metal sheet .

5. Lighter device in accordance with any of the prededing claims, Characterized in that a catalyzer wire (23) is provided within said tube-like combined vaporizer-and-burner unit (5) in the upper section (7) thereof;

6. Lighter device in accordance with any of the preceding claims, Characterized by comprising a wind-shield (4) forming a part of the upper portion (2) of the lighter and enclosing said burning space.
Cont'd/25

7. Lighter device in accordance with claim 6, Characterized in that said tube-like combined vaporizer-and-burner unit (5) is mounted on that wind shield (4) by means of a mounting or holding member (8) extending inwardly from said wind shield (4).

8, Lighter device as claimed in claim 7 in connection with claims 3 or 4, Characterized in that said mounting member (8) is a horse-shoe-shaped member accommodating the smaller diameter lower tube section (6) of said combined vaporizer-and-burner unit (5).

9. Lighter device in accordance with any of the preceding claims, Characterized in that said actuating means for said nozzle-and-valve aggregate (10) comprese an actuation lever (16, 17) pivotally mounted on the upper part of the lighter, and movable linkage (19, 20) operatively connecting said actuation lever (16, 17) with said valve of said nozzle-and-valve aggregate (10) for actuation thereof from its normally closed-valve condition Cont'd/26 into ists open-valve condition.

10. Lighter device in accordance with any of the preceding claims, wherein said ignition system comprises an ignition wheel or drum (11) / flint (15) aggregate arranged to direct, on actuation thereof, ignition sparks towards the upper end (7) of said combined vaporizer-and-burner unit (5), said ignition wheel or drum (11) being suitably associated with said valve actuation means (16, 17) for substantially common, simultaneous actuation of the ignition system and opening of the nozzle valve.

11. Lighter device in accordance with any of claims 1 through 9, wherein said ignition system comprises a piezo-electric unit (25, Figure 9) and an actuating member (26) therefor suitably associated with the actuating means (16, 17) of the valve nozzle (10) for common simultaneous actuation of the piezo-electric ignition unit and opening of the nozzle valve, Characterized in that the output lines of said piezo-eletric ignition unit are suitably connected with portions of said combined tube like vaporizer-and-burner unit (5) for generating Cont'd/27 ignition sparks within said unit (5) on actuation of the piezo-electric ignition member (25).

Cont'd/28