Combustion – Correlation of fuel or power supply with component movements...
Patent
1991-02-07
1992-02-25
Dority, Carroll B.
Combustion
Correlation of fuel or power supply with component movements...
431254, 431276, F23D 1136
Patent
active
050908936
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a childproof gas lighter of the type having in its housing, in which is formed a reservoir containing the gas in liquid form, a head comprising in addition to the burner valve connected to the reservoir via a pressure reducer an igniting mechanism comprising control means for opening the burner valve and means for making sparks.
BACKGROUND OF THE INVENTION
In known lighters of this type after each actuation of the control button the intermediate link piece is returned automatically to its service position, that is coupled with the associated operating element.
The result is that it is very dangerous to leave this type of lighter within reach of a child who can without any difficulty ignite it.
In order to avoid this serious disadvantage it has been proposed to make childproof lighters, that is lighters in which associated with the igniting mechanism is means for neutralizing this mechanism movable between an active neutralizing position in which it impedes actuation of the igniting mechanism and a retracted position in which it permits such actuation, these movable means being displaceable manually by the user from the actuatable service position to the retracted position.
This type of lighter is known in particular from European Patent Document EP A1 296,281. Nonetheless in all these lighters a neutralizing means is not set up so as to be automatically returned to the actuatable neutralizing position after actuation of the igniting mechanism.
This return to the use position can only be obtained by a specific maneuver in the opposite direction by the user.
It is therefore easy to imagine that simply forgetting same completely eliminates the advantages associated with the presence of the neutralizing means.
OBJECTS OF THE INVENTION
It is therefore an object of the present invention to provide an improved lighter.
Another object is to avoid the above-described disadvantages of the known lighters.
SUMMARY OF THE INVENTION
To attain these objects in the lighter of the invention which is of the above-described type the neutralizing means of the igniting mechanism is normally held in the neutralizing position and is in addition set up to be automatically returned to the neutralizing position after operation of the igniting mechanism.
To ignite this lighter it is therefore necessary to know the move to do to retract the blocking means which, evidently, is not possible for a child. In addition after use the user does not need to move the neutralizing means back because its return to the service position is automatic.
In the type of lighter according to the invention the igniting mechanism generally comprises means for controlling opening of the burner valve and means for making sparks set up to be operated simultaneously of the latter immediately after the former or inversely. These means can be mechanically independent from each other or can be associated with the same control element.
No matter what the relationship between the means for controlling the opening of the burner valve and the means for making sparks, in the lighter according to the invention it is necessary and sufficient that the neutralizing means act on at least one of the cited means, that is on the means for controlling ling the opening of the valve or on the means for making sparks. There is known for example from U.S. Pat. No. 3,827,852 a lighter in which the means for making sparks is constituted by a flint and a wheel whose drive element is formed by a disk having an edge toothing and intended to act as a ratchet capable of being rotated by means of a depressible control button against the force of a helical return spring and via a link piece forming the capacity of a pawl, wherein the link piece is formed by a straight extension of the upper end of the return spring of the control button and in which the means for controlling the opening of the valve is formed by a lever actuatable by the control button at the end of its depression.
In such a lighter according to the inventi
REFERENCES:
patent: 4830603 (1989-05-01), Cirami
patent: 4832596 (1989-05-01), Morris
patent: 5002482 (1991-03-01), Fairbanks et al.
Cricket
Dority Carroll B.
Dubno Herbert
Wilford Andrew
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