Lighter with a capacitor discharge ignition system

Claim 2

A smoker''s lighter comprising: a housing, a fuel tank mounted within the housing, a burner assembly mounted within the housing and connected to said fuel tank, and an electric ignition circuit mounted within the housing, said ignition circuit comprising: cell connection means for making connection to at least one electric cell, d.c. voltage step-up means having its input connected to said cell connection means, a capacitor to store energy for the production of a fuel igniting spark connected to the output of said voltage step-up means, said voltage step-up means being operative to change the level of d.c. voltage supplied, during use, by said at least one cell to a substantially higher level for charging the capacitor, a manually operable switch electrically connected in said ignition circuit to actuate said ignition circuit, capacitor discharge means having its input connected to said capacitor, and spark electrode means connected to the output of said capacitor discharge means and co-operating with said burner assembly to ignite fuel therefrom.

Claim 3

A lighter as claimed in claim 1, wherein the voltage step-up means to change the level of voltage comprises inverter means connected to rectifier means.

Claim 4

A lighter as claimed in claim 2 wherein the inveRter means comprises oscillator means connected to step-up transformer means.

Claim 5

A lighter as claimed in claim 3 wherein the oscillator means comprises a multivibrator oscillator.

Claim 6

A lighter as claimed in claim 3 wherein the output of the step-up transformer means is connected to full-wave rectifier means.

Claim 7

A lighter as claimed in claim 1, wherein said capacitor discharge means comprises: a thyristor, and a pulse transformer, said thyristor being connected to the capacitor and the pulse transformer and being operative to discharge said capacitor into said pulse transformer, the output of said pulse transformer being connected to said spark electrode means.

Claim 8

A lighter as claimed in claim 6, further including trigger means connected to the thyristor and operative to trigger the thyristor into conduction when a predetermined voltage is reached across the capacitor.

Claim 9

A smoker''s lighter comprising: a housing a fuel tank mounted within the housing, a burner assembly mounted within the housing and connected to said fuel tank, and an electric ignition circuit mounted within the housing, said ignition circuit comprising: cell connection means for making connection to at least one electric cell, d.c. voltage step-up means to change the level of d.c. voltage supplied by the said at least one cell to a substantially higher level, manually operable switch means to actuate said ignition circuit connected from the cell connection means to the voltage step-up means, a capacitor connected to the output of the voltage step-up means to store energy for the production of a fuel igniting spark, capacitor discharge means having its input connected to said capacitor, pulse transformer means connected to the output of said capacitor discharge means, and discharge means connected from the capacitor to the pulse transformer means for discharging the capacitor through the pulse transformer means, and spark electrode means connected to the output of said capacitor discharge means and co-operating with said burner assembly to ignite fuel therefrom.

Claim 10

A smoker''s lighter comprising: a housing a fuel tank mounted within the housing, a burner assembly mounted within the housing and connected to said fuel tank, and an electric ignition circuit mounted within the housing, said ignition circuit comprising: cell connection means for making connection to at least one electric cell, d.c. voltage step-up means to change the level of d.c. voltage supplied by the said at least one cell to a substantially higher level, manually operable switch means to actuate said ignition circuit connected from the cell connection means to the voltage step-up means, a capacitor connected to the output of the voltage step-up means to store energy for the production of a fuel igniting spark, capacitor discharge means having its input connected to said capacitor, pulse transformer means connected to the output of said capacitor discharge means, and discharge means connected from the capacitor to the pulse transformer means for discharging the capacitor through the pulse transformer means, and spark electrode means connected to the output of said capacitor discharge means and co-operating with said burner assembly to ignite fuel therefrom.

Claim 11

A smoker''s lighter comprising: a housing, a fuel tank mounted within the housing, a burner assembly mounted within the housing and connected to said fuel tank, and an electric ignition circuit mounted within the housing, said ignition circuit comprising: cell connection means for making connection to at least one electric cell, transistor oscillator means, step-up transformer means, the output of said transistor oscillator means being connected to the input of said step-up transformer means, manually operable switch means to actuate said ignition circuit connected from the cell connection means to the transistor oscillator means, rectifier means connected to the output of the step-up transformer means, capacitor means connected to the output of the rectifier means to store energy for the production of a fuel igniting spark, thyristor means connected to said capacitor means, pulse transformer means connected to said thyristor means for discharging the capacitor through the pulse transformer means, and spark electrode means connected to the output of said pulse transformer means and co-operating with said burner assembly to ignite fuel therefrom.

Claim 12

A smoker''s lighter comprising: a housing, a fuel tank mounted within the housing, a burner assembly mounted within the housing and connected to said fuel tank, and an electric ignition circuit mounted within the housing, said ignition circuit comprising: cell connection means for making connection to at least one electric cell, transistor oscillator means, step-up transformer means, the output of said transistor oscillator means being connected to the input of said step-up transformer means, manually operable switch means to actuate said ignition circuit connected from the cell connection means to the transistor oscillator means, rectifier means connected to the output of the step-up transformer means, capacitor means connected to the output of the rectifier means to store energy for the production of a fuel igniting spark, thyristor means connected to said capacitor means, pulse transformer means connected to said thyristor means for discharging the capacitor through the pulse transformer means, and spark electrode means connected to the output of said pulse transformer means and co-operating with said burner assembly to ignite fuel therefrom.