US3597140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas lighter
Assignee: Heinrich Maltner GmbH
•
Filing: 1969-07-09
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Granted: 1971-08-03
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Expires: 1989-07-09
Abstract
Abstract A fuel tank contains liquified gaseous fuel. A burner unit has an inlet and an outlet, the inlet being arranged to receive fuel from the tank. Igniting means serves to ignite fuel issuing in gaseous state from the outlet whereby the burner unit is heated by the resulting flame. Vaporizing means is interposed between and communicates with the fuel tank and the inlet to receive from the former fuel in liquid state and to supply it to the inlet in gaseous state. The vaporizing means defines a plurality of elongated fuel paths each of which is at least in part bounded by an inner heat-exchanging surface which is in heat-exchanging relationship with the burner unit.
Inventors
- 👤 Peter Rabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:15
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/16; F23Q2/162; F23Q2/163
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A gas lighter, comprising a fuel tank for liquefied gaseous fuel; a burner unit having an inlet and an outlet; igniting means operative for igniting fuel issuing in gaseous state from said outlet, whereby heat from the resulting flame raises the temperature of said burner unit; vaporizing means interposed between and communicating with said fuel tank and said inlet for receiving fuel in liquid state from the former and supplying it in gaseous state to the latter, said vaporizing means comprising inner heat-exchanging surfaces in heat-exchanging relationship with said burner unit and each at least in part bounding an elongated fuel path for movement of said fuel from said fuel tank to said inlet; and throttling means for fuel in liquid state upstream of said vaporizing means intermediate the same and said fuel tank in heat-exchanging relationship with at least said heat-exchanging surfaces and having a thermal conductivity factor which is poorer than that of said heat-exchanging surfaces.
Claim 2
Dependent Claim
158 words
A gas lighter, comprising a fuel tank for liquefied gaseous fuel; a burner unit having an inlet and an outlet; igniting means operative for igniting fuel issuing in gaseous state from said outlet, whereby heat from the resulting flame raises the temperature of said burner unit; vaporizing means interposed between and communicating with said fuel tank and said inlet for receiving fuel in liquid state from the former and supplying it in gaseous state to the latter, said vaporizing means comprising inner heat-exchanging surfaces in heat-exchanging relationship with said burner unit and each at least in part bounding an elongated fuel path for movement of said fuel from said fuel tank to said inlet; and throttling means for fuel in liquid state upstream of said vaporizing means intermediate the same and said fuel tank in heat-exchanging relationship with at least said heat-exchanging surfaces and having a thermal conductivity factor which is poorer than that of said heat-exchanging surfaces.
Claim 3
Dependent Claim
39 words
A gas lighter as defined in claim 1, said vaporizing means comprising wall means defining a conduit communicating with said fuel tank and said inlet, and insert means lodged in said conduit and defining said plurality of fuel paths.
Claim 4
Dependent Claim
19 words
A gas lighter as defined in claim 2, wherein said throttling means is thermally insulated from said insert means.
Claim 5
Dependent Claim
45 words
A gas lighter as defined in claim 2, said conduit having a predetermined cross-sectional area, and said insert means comprising at least one porous insert layer extending across said entire predetermined area and consisting at least in part of a material of high thermal conductivity.
Claim 6
Dependent Claim
15 words
A gas lighter as defined in claim 4 wherein said material is a wire-mesh material.
Claim 7
Dependent Claim
62 words
A gas lighter as defined in claim 2, said insert means comprising an insert member having a surface facing towards said fuel tank and provided with inlet apertures of the respective fuel paths; and further comprising a body of yieldable porous material upstream of said insert member in contact with said surface thereof and at least in part constituting said throttling means.
Claim 8
Dependent Claim
19 words
A gas lighter as defined in claim 2, said insert means comprising an insert member of substantially disk-shaped configuration.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |