US4073400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas containers
Assignee: Fulmer Research Institute Ltd
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Filing: 1975-11-12
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Granted: 1978-02-14
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Expires: 1995-11-12
Abstract
Abstract A lightweight gas container comprising walls formed of two bonded layers, the outer layer being formed of a fibre-reinforced synthetic resin and the inner layer being formed of a metal alloy which has a high and reversible elasticity and good fatigue resistance.
Inventors
- 👤 Greville B. Brook
- 👤 William H. Bowyer
- 👤 Charles D. Desforges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:23
CPC Classifications
F; F17; F17C; F17C1/00; F17C1/10; F17C1/16; F17C2201/00; F17C2201/05; F17C2201/058; F17C2203/00; F17C2203/06; F17C2203/0602; F17C2203/0604; F17C2203/0612; F17C2203/0614; F17C2203/0619; F17C2203/0621; F17C2203/0634; F17C2203/0636; F17C2203/0639; F17C2203/0646; F17C2203/0648; F17C2203/0658; F17C2203/0663; F17C2203/067; F17C2203/0673; F17C2209/00; F17C2209/21; F17C2209/2109; F17C2209/2127; F17C2209/2154; F17C2209/2163; F17C2223/00; F17C2223/01; F17C2223/0107; F17C2223/0123; F17C2223/0146; F17C2223/0153; F17C2223/0161; F17C2223/03; F17C2223/036; F17C2260/00; F17C2260/01; F17C2260/012; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1355; Y10T428/249921; Y10T428/249922; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249945; Y10T428/249947; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A gas container, the walls of which are formed of two bonded layers, the outer layer being formed of a fibre-reinforced synthetic resin having a working strain which is greater than 0.1% and the inner layer of a metal alloy, which inner layer of metal alloy: (a) is capable of deforming elastically to the working strain of the outer layer up to a strain of at least about 2%, (b) is resistant to fatigue damage when cyclic strains up to about 2% are applied, (c) has an M s temperature at least 50° C below the operating temperature of the container, and (d) is resistant to corrosion by the gas which the container is intended to contain.
Claim 2
Dependent Claim
117 words
A gas container, the walls of which are formed of two bonded layers, the outer layer being formed of a fibre-reinforced synthetic resin having a working strain which is greater than 0.1% and the inner layer of a metal alloy, which inner layer of metal alloy: (a) is capable of deforming elastically to the working strain of the outer layer up to a strain of at least about 2%, (b) is resistant to fatigue damage when cyclic strains up to about 2% are applied, (c) has an M s temperature at least 50° C below the operating temperature of the container, and (d) is resistant to corrosion by the gas which the container is intended to contain.
Claim 3
Dependent Claim
176 words
A gas container as set forth in claim 1, wherein said metal alloy is selected from the group consisting of alloys of the following composition by weight (a) Fe - Mn, 15.0% - Ni, 6-4% - Cr, 10.0 - 15.0%, (b) Fe - Mn, 20.0% - Ni, 10.0%, (c) Fe - Mn, 20.0% - Cr, 10.0%, (d) Fe - Ni, 15.0% - Cr, 25.0%, (e) Fe - Mn, 25.0 - 30.0%, (f) Cu - Zn, 38.6 - 41.5%, (g) Cu - Zn, 17.0 - 19.0% - Al, 6.75 - 7.5%, (h) Cu - Zn, 31.0% - Sn, 5.0%, (i) Cu - Zn, 30.0% - 31.0% - Si, 2.25 - 5.0%, (j) Cu - Al, 10.75% - Mn, 10.0%, (k) Cu - Al, 13.75% - Ni, 5.0%, (l) Ni - Ti, 44.5%, (m) Au - Cd, 35.0%, (n) Cu - Zn, 31.75% - Al, 3.5% (o) Cu - Zn, 32.25% - Sn, 6.0%, (p) Cu - Zn, 34.5% - Si, 2.25%, (q) Cu - Al, 12.5% - Ni, 6.0%, (r) Cu - Al, 11.0% - Mn, 10.0%.
Claim 4
Dependent Claim
31 words
A gas container as set forth in claim 1, which additionally comprises a third bonded layer inside the metal alloy layer, said third layer being formed of a fibre-reinforced synthetic resin.
Claim 5
Dependent Claim
39 words
A gas container as set forth in claim 1, wherein the fibres present in the fibre-reinforced layer are selected from the group consisting of carbon fibres, polybenzamide fibres, glass fibres, asbestos fibres, boron fibres, metal fibres and alumina fibres.
Claim 6
Dependent Claim
36 words
A gas container as set forth in claim 1, wherein the fibre reinforcement of the outer layer is in a continuous filamentary form and is formed as a plurality of helically wound layers by filament winding.
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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) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |