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US3860385A Expired / Lapsed US ⏱️ 0.0 years remaining

Cigarette lighter

Assignee: Individual
•
Filing: 1972-12-29
•
Granted: 1975-01-14
•
Expires: 1992-12-29
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Abstract

Abstract A gas lighter comprises a gas tank, a valve casing accommodated within the gas tank, a cylindrical packing inserted sealingly into the valve casing, and a valve cap being connected threadly within the valve casing and having one end thereof hermetically in contact with one end of the cylindrical packing, thus forming a valve chamber of the structure having an improved gas-tight property. The valve chamber is provided with a port of a nozzle therewithin, a first valve means for closing the gas passage intercommunicating with the nozzle, and a second valve means for blocking the gas flow in the gas passage. The second valve means is provided with at least two layers of porous reducing disks having gas permeability as well as elasticity, and a barrier disk having gas impermeability as well as rigidity and being inerted between the porous reducing disks. The barrier disk has a rugged surface on at least one side thereof. The gas tank has at the bottom part thereof an opening which is subjected to be closed by welding a bottom lid thereto at the periphery thereof before feeding a liquidized gas into the gas tank. After welding operation, the liquidized gas is adapted to be fed into the gas tank through a fine slot provided on the gas tank. After gas feeding operation, the fine slot is closed by inserting there into a blocking pin which is welded to the peripheries surface of the slot, thus, liquidized gas stays sealingly within the tank.

Inventors

  • 👤 Yoshitaka Nakanishi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 11:50
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/16; F23Q2/167; F23Q2/173

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 256 words
A gas lighter comprising a bottom-closed cylindrical valve casing, a valve cap threadedly connected within said valve casing, and a cylindrical packing accommodated within said valve casing, the outer peripheral surface of said cylindrical packing being in close sealing contact with the inner peripHeral surface of said valve casing, similarly the upper end of said packing with the lower end of said valve cap, and the lower end of said packing with the bottom wall of said valve casing respectively so as to provide a valve chamber closely sealed by said valve casing and the valve cap, and in which said cylindrical packing is provided with a barrier wall for separating said packing into upper and lower chambers, said barrier wall having an aperture intercommunicating the upper and the lower chambers with each other, a valve seat mounted within said upper chamber and on said packing, and said lower chamber accommodating therewithin at least two layers of reducing disks for reducing the velocity of gas flow having gas permeability together with elasticity and a barrier disk having gas impermeability together with rigidity inserted between said reducing disks, a nozzle displaceable in upward and downward directions having the lower end thereof inserted into said valve chamber and the other end thereof staying at the outside of the valve chamber, and a valve seal member fixed at the lower end of said nozzle for opening and closing gas passage to the nozzle by contacting with and separating from said valve seat due to the displacement of said nozzle.
Claim 2
Dependent Claim 256 words
A gas lighter comprising a bottom-closed cylindrical valve casing, a valve cap threadedly connected within said valve casing, and a cylindrical packing accommodated within said valve casing, the outer peripheral surface of said cylindrical packing being in close sealing contact with the inner peripHeral surface of said valve casing, similarly the upper end of said packing with the lower end of said valve cap, and the lower end of said packing with the bottom wall of said valve casing respectively so as to provide a valve chamber closely sealed by said valve casing and the valve cap, and in which said cylindrical packing is provided with a barrier wall for separating said packing into upper and lower chambers, said barrier wall having an aperture intercommunicating the upper and the lower chambers with each other, a valve seat mounted within said upper chamber and on said packing, and said lower chamber accommodating therewithin at least two layers of reducing disks for reducing the velocity of gas flow having gas permeability together with elasticity and a barrier disk having gas impermeability together with rigidity inserted between said reducing disks, a nozzle displaceable in upward and downward directions having the lower end thereof inserted into said valve chamber and the other end thereof staying at the outside of the valve chamber, and a valve seal member fixed at the lower end of said nozzle for opening and closing gas passage to the nozzle by contacting with and separating from said valve seat due to the displacement of said nozzle.
Claim 3
Dependent Claim 30 words
A gas lighter according to claim 1, in which said barrier disk is formed with a number of grooves for controlling the gas flow at least on one surface thereof.
Claim 4
Dependent Claim 56 words
A gas lighter according to claim 1, in which said valve seat is formed in a cylinder having a peripheral wall thereof extending upwardly from a bottom part inserted within said valve cap, said valve cap being disposed on said cylinder, a shoulder part engaging the upper end of said cylinder for lowering down said cylinder.

References Cited (Backward Citations)

US3118295A Cited
US3018648A Cited
US3096636A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-01-13 1978-07-15 1979-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-01-13 1982-07-15 1983-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-01-13 1986-07-15 1987-01-14 $7700.00 Window Closed / Lapsed

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