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Patent US3729289A successfully refreshed from Google Patents.
US3729289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cigarette lighter
Assignee: ST Dupont SA
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Filing: 1971-01-05
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Granted: 1973-04-24
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Expires: 1991-01-05
Abstract
Abstract A gas cigarette lighter having a burner nozzle, a manually operable closure cap associated with the burner nozzle and a reservoir for holding lighter fuel. Within the reservoir there is disposed wall means which divides the reservoir into at least one first part in which the fuel is stored in its liquid phase and a second part which communicates with the burner nozzle and which contains fuel in its gaseous phase to which said wall means is pervious.
Inventors
- 👤 D Bouvier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/34; F23Q2/42; B; B60; B60W; B60W2710/00; B60W2710/02; B60W2710/025; B60W2710/027
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A gas cigarette lighter using lighter fuel stored therein in a liquified state, comprising A. a burner nozzle, B. a manually operable closure cap associated with said nozzle for opening and closing the same, C. a reservoir for storing said fuel; said reservoir including 1. a first space of relatively large volume receiving said fuel in liquid state for storage, 2. a second space of relatively small volume, 3. wall means separating said first space from said second space, said wall means being pervious solely to the gaseous phase of said lighter fuel and D. channel means connecting said second space of said reservoir with said burner nozzle.
Claim 2
Dependent Claim
108 words
A gas cigarette lighter using lighter fuel stored therein in a liquified state, comprising A. a burner nozzle, B. a manually operable closure cap associated with said nozzle for opening and closing the same, C. a reservoir for storing said fuel; said reservoir including 1. a first space of relatively large volume receiving said fuel in liquid state for storage, 2. a second space of relatively small volume, 3. wall means separating said first space from said second space, said wall means being pervious solely to the gaseous phase of said lighter fuel and D. channel means connecting said second space of said reservoir with said burner nozzle.
Claim 3
Dependent Claim
7 words
a second space of relatively small volume,
Claim 4
Dependent Claim
7 words
a second space of relatively small volume,
Claim 5
Dependent Claim
46 words
A gas cigarette lighter as defined in claim 1, wherein said wall means is formed of a membrane affixed to the inside of said reservoir and dividing the latter into a first chamber constituting said first space and into a second chamber constituting said second space.
Claim 6
Dependent Claim
39 words
wall means separating said first space from said second space, said wall means being pervious solely to the gaseous phase of said lighter fuel and D. channel means connecting said second space of said reservoir with said burner nozzle.
Claim 7
Dependent Claim
39 words
wall means separating said first space from said second space, said wall means being pervious solely to the gaseous phase of said lighter fuel and D. channel means connecting said second space of said reservoir with said burner nozzle.
Claim 8
Dependent Claim
69 words
A gas cigarette lighter as defined in claim 1, wherein said lighter fuel is enclosed in its liquid phase in at least one capsule, the wall of which constitutes the wall means defined in (C) (3); the space enclosed by said capsule constitutes the space defined in (C) (1) and the inner volume of said reservoir less the volume of said capsule constitutes the space defined in (C) (2).
Claim 9
Dependent Claim
69 words
A gas cigarette lighter as defined in claim 1, wherein said lighter fuel is enclosed in its liquid phase in microcapsules, the walls of which together constitute the wall means defined in (C) (3); the spaces enclosed by said micRocapsules together constitute the space defined in (C) (1) and the inner volume of said reservoir less the total volume of said microcapsules constitutes the space defined in (C) (2).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |