US3716414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
100-watt fuel cell
Assignee: Catalytic Technology Corp
•
Filing: 1970-08-12
•
Granted: 1973-02-13
•
Expires: 1990-08-12
Abstract
Abstract A commercially useful and marketable fuel cell is described. The cell is capable of operating at ambient conditions of temperatures, pressure and the like for long periods of time. The complete cell includes one or more banks of individual cells, each cell including an anode, an air breathing catalytic cathode, and means for controlled feed of fuel and an aqueous electrolyte. The catalytic electrodes may be catalytic silver. A 100-watt commercial fuel cell is described.
Inventors
- 👤 M Goldberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:57
CPC Classifications
H; H01; H01M; H01M8/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
231 words
A fuel cell comprising a cell block having end walls and a bottom wall forming outer walls of a fuel chamber and an electrolyte chamber, an anode electrode mounted on said block in position to separate the fuel chamber from the electrolyte chamber, and forming a common internal wall of the fuel chamber and the electrolyte chamber, means to supply an aqueous electrolyte to said electrolyte chamber, means to circulate a liquid fuel to and recirculate said fuel from the fuel chamber, said fuel circulation means including a fuel input means at the top of the fuel chamber, fuel discharge means at one end of the fuel chamber to discharge fuel from the fuel chamber, and a downwardly inclined fuel directing baffle positioned below the fuel input means to receive fuel by gravity flow from the fuel input means and to direct fuel downwardly and toward the other end of the fuel chamber away from the fuel discharge means, causing the fuel to flow in a circular path within the fuel chamber over substantially the entire surface of said anode, an external side wall mounted on said block to form an external wall of said fuel chamber, and an air breathing cathode defining an external wall of said electrolyte chamber and positioned with one face thereof in contact with said electrolyte and another face thereof facing externally from said cell block.
Claim 2
Dependent Claim
231 words
A fuel cell comprising a cell block having end walls and a bottom wall forming outer walls of a fuel chamber and an electrolyte chamber, an anode electrode mounted on said block in position to separate the fuel chamber from the electrolyte chamber, and forming a common internal wall of the fuel chamber and the electrolyte chamber, means to supply an aqueous electrolyte to said electrolyte chamber, means to circulate a liquid fuel to and recirculate said fuel from the fuel chamber, said fuel circulation means including a fuel input means at the top of the fuel chamber, fuel discharge means at one end of the fuel chamber to discharge fuel from the fuel chamber, and a downwardly inclined fuel directing baffle positioned below the fuel input means to receive fuel by gravity flow from the fuel input means and to direct fuel downwardly and toward the other end of the fuel chamber away from the fuel discharge means, causing the fuel to flow in a circular path within the fuel chamber over substantially the entire surface of said anode, an external side wall mounted on said block to form an external wall of said fuel chamber, and an air breathing cathode defining an external wall of said electrolyte chamber and positioned with one face thereof in contact with said electrolyte and another face thereof facing externally from said cell block.
Claim 3
Dependent Claim
20 words
A fuel cell as set forth in claim 1, wherein said cathode comprises catalytically active silver and an air-porous resin.
Claim 4
Dependent Claim
27 words
A fuel cell as set forth in claim 2, wherein said anode electrode is a porous electrode of catalytically active silver powder formed into an electrode structure.
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |