US3813041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for storing a liquid for its distribution in the gaseous state
Assignee: ST Dupont SA
•
Filing: 1972-09-12
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Granted: 1974-05-28
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Expires: 1992-09-12
Abstract
Abstract Apparatus for storing liquified gas under pressure in a container from which the liquid is released as a gas into an atmosphere or region at a lower pressure than the storage pressure. This container additionally contains a solid polymer on which the liquid acts like a swelling agent so that the polymer becomes a gel which releases the liquid stored therein as a gas.
Inventors
- 👤 J Kleine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:01
CPC Classifications
F; F17; F17C; F17C11/00; F17C11/007; F23; F23Q; F23Q2/00; F23Q2/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
26 words
A device according to claim 1, in which said polymer comprises a membrane covering at least one part of the inner walls of the storage enclosure.
Claim 2
Dependent Claim
25 words
A device, according to claim 1, in which said polymer comprises a membrane interposed between the stored liquid and said one or more distribution apertures.
Claim 3
Dependent Claim
30 words
A device according to claim 1, comprising a tubular member connected to said one or more distribution apertures, said tubular member having at least one aperture closed by said polymer.
Claim 4
Dependent Claim
27 words
A device according to claim 1, wherein said polymer is polymerized ''''in situ'''' in the storage enclosure prior to being filled with the liquid to be stored.
Claim 5
Dependent Claim
35 words
A gas lighter, in which ignition means and combustion means for the gas is supplied by a device according to claim 1 without the interposition of a member ensuring the cutting off of the gas.
Claim 6
Dependent Claim
77 words
A device according to claim 1, in which the liquid to be stored comprises a major part of at least one liquefied saturated hydrocarbon and the solid polymer is selected from the group consisting of polysiloxanes; natural polyisoprenes; synethtic polyisoprenes; polyolefins with cross-links, obtained by action of radiation or peroxides; polyalkylstyrenes, with cross-links; block polymers having at least one constituent part with a maximum affinity for the solvent; polymethylpentenes; and butyl rubbers with weak bridging between chains.
Claim 7
Dependent Claim
12 words
A device according to claim 1 wherein said polymer is weakly cross-linked.
Claim 8
Dependent Claim
25 words
A device according to claim 1 wherein the solubility parameter of the polymer differs at most from the liquefied gas by + or - 2.0.
Claim 9
Dependent Claim
25 words
A device according to claim 1 wherein the solubility parameter of the polymer differs at most from the liquefied gas by + or - 0.5.
Claim 10
Dependent Claim
29 words
A device according to claim 1 wherein said distribution aperture of the storage enclosure is adapted for direct communication with ignition means and combustion means for the gaseous product.
References Cited (Backward Citations)
US3129888A
Cited
US3729289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |