Patent US4713407A successfully refreshed from Google Patents.
Patent US4177646A successfully refreshed from Google Patents.
US4177646A
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Liquefied gas apparatus
Assignee: ST Dupont SA
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Filing: 1977-11-17
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Granted: 1979-12-11
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Expires: 1997-11-17
Abstract
Abstract A liquefied gas apparatus, in particular a gas lighter for smokers, is disclosed, utilizing a vaporizer-pressure reducer assembly including a pressure reducing device situated generally within a vaporizer. All solid materials with which the assembly is in contact have a thermal conductivity in the range 0.3 to 5 kcal/m/h/° C.
Inventors
- 👤 Laurent J. Guadagnin
- 👤 Claude R. Grossiord
- 👤 John A. Jensen
- 👤 Antoine Kawam
- 👤 Jacques M. Mouchet
- 👤 Michel E. Royer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:40
CPC Classifications
F; F23; F23Q; F23Q2/00; F23Q2/16; F23Q2/162; F23Q2/163; F17; F17C; F17C7/00; F17C7/02; F17C2201/00; F17C2201/05; F17C2201/056; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/0634; F17C2203/0636; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0382; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2270/00; F17C2270/07
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
57 words
A liquefied gas apparatus comprising a vaporizer-pressure reducer ensuring both transition into the gaseous state of gas stored in the liquid state and control of the flow of the gas discharged therefrom, all solid portins of said apparatus with which said vaporizer-pressure reducer is in contact having a thermal conductivity in the range 0.3 to 5 kcal/m/h/°C.
Claim 2
Dependent Claim
57 words
A liquefied gas apparatus comprising a vaporizer-pressure reducer ensuring both transition into the gaseous state of gas stored in the liquid state and control of the flow of the gas discharged therefrom, all solid portins of said apparatus with which said vaporizer-pressure reducer is in contact having a thermal conductivity in the range 0.3 to 5 kcal/m/h/°C.
Claim 3
Dependent Claim
25 words
Liquefied gas apparatus as defined in claim 1, in which said vaporizer-pressure reducer comprises a metal mass whose thermal conductivity is greater than 40 kcal/m/h/°C.
Claim 4
Dependent Claim
19 words
Liquefied gas apparatus as defined in claim 2, in which said vaporizer-pressure reducer includes a plurality of capillary passages.
Claim 5
Dependent Claim
22 words
Liquefied gas apparatus as defined in claim 3, in which said capillary passages are situated at the periphery of a solid mass.
Claim 6
Dependent Claim
17 words
Liquefied gas apparatus as defined in claim 3, in which said capillary passages comprise a porous mass.
Claim 7
Dependent Claim
17 words
Liquefied gas apparatus as defined in claim 5, in which said porous mass is a sintered component.
Claim 8
Dependent Claim
28 words
Liquefied gas apparatus as defined in claim 3, in which at least part of said metal mass is in the form of a tube surrounding said capillary passages.
Claim 9
Dependent Claim
34 words
Liquefied gas apparatus as defined in claim 7, in which said metal tube is closed at one end with the exception of an orifice of cross section not exceeding that of a capillary tube.
Claim 10
Dependent Claim
26 words
Liquefied gas apparatus as defined in claim 7, in which only part of said metal tube is in contact with said mass forming said capillary passages.
Claim 11
Dependent Claim
27 words
Liquefied gas apparatus as defined in claim 1, in which said vaporizer-pressure reducer is disposed in a plastic tube opening out into a liquefied gas storage reservoir.
Claim 12
Dependent Claim
40 words
Liquefied gas apparatus as defined in claim 7, in which a porous wick having two ends is held by one end in said metal tube, the second end of said porous wick being disposed in a liquefied gas storage reservoir.
Claim 13
Dependent Claim
20 words
Liquefied gas apparatus as defined in claim 11, in which said wick constitutes said capillary passages of said vaporizer-pressure reducer.
Claim 14
Dependent Claim
16 words
The invention as defined in claim 1, in which said liquefied gas apparatus is a lighter.
Claim 15
Dependent Claim
21 words
Liquefied gas apparatus as defined in claim 3, and further including means for varying the overall section of said capillary passages.
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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) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |