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Patent US3595699A successfully refreshed from Google Patents.
US3595699A
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US
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Fuel cell temperature control
Assignee: Allis Chalmers Corp
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Filing: 1969-02-13
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Granted: 1971-07-27
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Expires: 1989-02-13
Abstract
Abstract THE INVENTION COMPRISES A FUEL CELL TEMPERATURE CONTROL WHICH ANTICIPATES HEATING BY INTERNAL LOSSES GENERATED AS A RESULT OF FUEL CELL LOAD CURRENT VARIATION AND INITIATES COOLING IN ADVANCE OF THE ACTUAL TIME THE TEMPERATURE RISE IS SENSED BY THE TEMPERATURE DETECTING MEANS. A DIFFERENTIAL AMPLIFIER RECEIVES A FIRST INPUT SIGNAL WHICH IS A FUNCTION OF THE RATE OF CHANGE OF FUEL CELL CURRENT AND TIME AND A SECOND INPUT SIGNAL WHICH IS A FUNCTION OF FUEL CELL TEMPERATURE, AND MEANS RESPONSIVE TO THE OUTPUT FROM THE DIFFERENTIAL AMPHLIFIER REGULATE THE FLOW OF COOLANT THROUGH A HEAT EXCHANGER IN HEAT TRANSFER RELATION WITH THE FUEL CELL.
Inventors
- 👤 John Baude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:41
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/04; H01M8/04298; H01M8/04313; H01M8/0432; H01M8/04365; H01M8/04007; H01M8/04694; H01M8/04701; H01M8/04723; H01M8/04731; H01M8/04746; H01M8/04768; H01M8/04029; 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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |