US3683622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of supplying a propulsion device with fuel
Assignee: ABB Norden Holding AB
•
Filing: 1969-10-03
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Granted: 1972-08-15
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Expires: 1989-10-03
Abstract
Abstract A propulsion system for a submarine includes an electric motor driving a propeller supplied with current from a fuel cell battery and a hydrocarbon burning engine. The fuel in the form of a hydroaromatic hydrocarbon or a mixture of such hydrocarbons is stored near the propulsion system. The hydroaromatic hydrocarbon is split to form hydrogen and the corresponding aromatic hydrocarbon. The hydrogen is supplied to the fuel cell and the hydroaromatic hydrocarbon is supplied as fuel to the other propulsion device.
Inventors
- 👤 Otto Von Krusenstierna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:40
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02M; F02M1/00; F02M2700/00; F02M2700/43; F02M2700/4302; F02M2700/4314
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
Method according to claim 1, in which hexahydrobenzene is the hydroaromatic hydrocarbon.
Claim 2
Dependent Claim
12 words
Method according to claim 1, in which decahydronaphthalene is the hydroaromatic hydrocarbon.
Claim 3
Dependent Claim
12 words
Method according to claim 1, in which tetrhydronaphthalene is the hydroaromatic hydrocarbon.
Claim 4
Dependent Claim
33 words
Method according to claim 1, in which the hydroaromatic hydrocarbon fuel consists essentially of a mixture of at least two of the substances selected from the group consisting of hexahydrobenzene, decahydronaphthalene and tetrahydronaphthalene.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |