US3745047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional action electronic fuel control for fuel cells
Assignee: RTX Corp
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Filing: 1970-12-31
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Granted: 1973-07-10
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Expires: 1990-12-31
Abstract
Abstract A proportional electronic fuel control controls the feed flow of fuel to the reformer of a fuel cell system in response to fuel cell current, reformer temperature and the position of the fuel flow control valve. The electronic control produces a proportional control signal which actuate solenoids in a digital manner to regulate the position of the fuel flow control valve. A deadband is provided in the electronic control to prevent continuous cycling of the control valve.
Inventors
- 👤 Salvatore Fanciullo
- 👤 Richard N Gagnon
- 👤 Warren S Summers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:31
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/06; H01M8/0606; H01M8/0612; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/20; G05D23/22; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |