Safety gas lighter

Details Safety gas lighter Safety gas lighter

2000-10-13

2002-09-10

Bennett, Henry (Department: 3743)

Combustion

Correlation of fuel or power supply with component movements...

C431S255000, C431S256000, C431S344000, C126S401000, C126S405000

Reexamination Certificate

active

06447287

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to gas lighters, and more particularly to a gas lighter with dual safety mechanisms, which comprises a stop mechanism controlled by a lever to stop the ignition button of the gas lighter froml triggering the electric arc generator of the gas lighter and moving the gas lever of the fuel tank when opening the fuel gas outlet.
FIG. 1
illustrates a gas lighter according to the prior art. This structure of gas lighter l comprises a substantially rectangular handgrip
10
with a tube
12
at its one end, a fuel tank
14
and an electric arc generator
16
mounted inside the handgrip
10
. The fuel tank
14
has a gas outlet
142
connected to a gas nozzle in the tube
12
(not shown) by a gas hose
144
, and a gas lever
146
adapted to close/open the gas outlet
142
. The handgrip
10
has an opening
18
. An ignition button
19
is suspended in the handgrip
10
and partially projects out of the opening
18
. The bottom side of the ignition button
19
faces the actuator
162
of the electric arc generator
16
. The electric arc generator
162
has a first electrode connected to the
20
gas nozzle. and a second electrode (not shown) connected to the tube
12
. As illustrated in
FIG. 2
, a stop mechanism
2
is provided between the ignition button
19
and the fuel tank
14
inside the handgrip
10
. The stop mechanism
2
comprises a base frame
20
pivoted to the handgrip
10
, a lever
22
inserted through a hole on the handgrip
10
and connected to the base frame
20
, a first spring element
202
adapted to return the base frame
20
after the lever
22
has been pressed and then released, a link
24
slidably coupled to the base frame
20
and aimed at the ignition button
19
, and a second spring element
242
adapted to return the link
24
after the link
24
has been pressed and then released. When turning the lever
22
of the stop mechanism
2
to move the link
24
to the fuel tank
14
and then pressing the ignition button
19
, the link
24
is forced downwards against the gas lever
146
, causing the fuel tank
14
to release fuel gas through the gas hose
144
to the gas nozzle, and at the same time the actuator
162
of the electric arc generator
16
is triggered to generate an electric arc around the gas nozzle, and therefore a flame is produced at the gas nozzle. If the lever
22
of the stop mechanism
2
is not turned to the unlocking position before pressing the ignition button
19
, the down stroke of the ignition button
19
can only trigger the electric arc generator
16
to generate an electric arc without opening the gas outlet
142
of the fuel tank
14
. However, this design is still not satisfactory in function. Because the actuator
162
of the electric arc generator
16
will be triggered when pressing the ignition button
19
without turning the lever
22
of the stop mechanism
2
to the unlocking position the gas lighter
1
is still not safe in use. When a child plays with the gas lighter and presses the ignition button
19
by accident, a flame will be produced, and the flame may injure the child.
SUMMARY OF THE INVENTION
The invention has been accomplished to provide a safety gas lighter, which eliminates the aforesaid problem. According to one aspect of the present invention, the safety gas lighter comprises a spring supported actuating device, which is caused to drive a gas lever to open a fuel tank gas outlet and enable fuel gas to flow out of the fuel tank to a gas nozzle for burning when the user presses an ignition button to trigger an electric arc generator, and to produce an electric arc around the gas nozzle, and a locking lever assembly adapted to turn the actuating device between the operative position and the non-operative position. According to another aspect of the present invention, the locking lever assembly comprises a spring supported sliding member that can be engaged into a positioning hole in the handgrip of the safety gas lighter to lock the actuating device in the non-operative position. When locked, pressing the ignition button does not open the fuel tank to discharge fuel gas.


REFERENCES:
patent: 5975888 (1999-11-01), Hsu
patent: 5980242 (1999-11-01), Man
patent: 5997282 (1999-12-01), Man
patent: 6059563 (2000-05-01), Hsu

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