Patent EP0320244A2 successfully refreshed from Google Patents.
Patent US3877989A successfully refreshed from Google Patents.
US3877989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power system and an electrochemical control device therefor
Assignee: Nippon Paint Co Ltd
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Filing: 1971-09-13
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Granted: 1975-04-15
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Expires: 1991-09-13
Abstract
Abstract A transducer is provided which comprises a metal/gas/electrolyte electrochemical cell which delivers a high-gain change of gas pressure as a function of millivolt shunt voltage impressed upon its electrodes. The device is simple, relatively inexpensive and reliable with a high degree of sensitivity enabling its use, for example, in a fuel cell power plant to sense and use load current to directly control the power plant.
Inventors
- 👤 Elliot Isadore Waldman
- 👤 John Richard Aylward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:50
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/04; H01M8/04082; H01M8/04089; H01M8/04007; H01M8/04029; H01M8/06; H01M8/0606; H01M8/0612; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10S; Y10S204/00; Y10S204/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
160 words
A POWER SYSTEM COMPRISING IN COMBINATION AN ELECTRICAL POWER SOURCE AND AN ELECTROVHEMICAL CONTROL DEVICE SAID DEVICE COMPRISING A CONSUMABLE METAL ANODE COMPRISING LEAD, A GAS CATHODE COMPRISING A NON-CONSUMABLE ELECTRODE ELECTROCHEMICALLY REACTIVE TO HYDROGEN; AN ELECTROLYTE MIXTURE OF LEAD PERCHORATE AND PERCHLORIC ACID IN CONTACT WITH THE SEPARATING SAID ANODE AND CATHODE, AND A GAS CAVITY HAVING HYDROGEN GAS THERIN ANA HAVING A PREDETERMINED AND CONTROLLED VOLUME IN FLUID COMMUNICATION WITH SAID ANODE, MEANS FOR SETTING SAID DEVICE AT A PREDETERMINED GAS PRESSURE IN SAID CAVITY CORRESPONDING TO A PREDETERMINED POTENTIAL IMPOSED ON SAID DEVICE, SAID COMBINATION BEING CONSTRUCTED AND ARRANGED WHEREBY THE IR FROM SAID POWER SOURCE IS IMPOSED UPON SAID ANODE AND CATHODE OF SAID ELECTROCHEMICAL CONTROL DEVICE THROUGH A SHUNT, SAID DEVICE BEING CONSTRUCTED AND ARRANGED TO UNDERGO A PRESSURE CHANGED IN SAID GAS CAVITY AS A FUNCTION OF IR CHANGE IMPOSES UPON SAID ANODE AND CATHODE BY SAID SOURCE TO ACTUATE A PRESSURE FORCE TRANSMITTER.
Claim 2
Dependent Claim
160 words
A POWER SYSTEM COMPRISING IN COMBINATION AN ELECTRICAL POWER SOURCE AND AN ELECTROVHEMICAL CONTROL DEVICE SAID DEVICE COMPRISING A CONSUMABLE METAL ANODE COMPRISING LEAD, A GAS CATHODE COMPRISING A NON-CONSUMABLE ELECTRODE ELECTROCHEMICALLY REACTIVE TO HYDROGEN; AN ELECTROLYTE MIXTURE OF LEAD PERCHORATE AND PERCHLORIC ACID IN CONTACT WITH THE SEPARATING SAID ANODE AND CATHODE, AND A GAS CAVITY HAVING HYDROGEN GAS THERIN ANA HAVING A PREDETERMINED AND CONTROLLED VOLUME IN FLUID COMMUNICATION WITH SAID ANODE, MEANS FOR SETTING SAID DEVICE AT A PREDETERMINED GAS PRESSURE IN SAID CAVITY CORRESPONDING TO A PREDETERMINED POTENTIAL IMPOSED ON SAID DEVICE, SAID COMBINATION BEING CONSTRUCTED AND ARRANGED WHEREBY THE IR FROM SAID POWER SOURCE IS IMPOSED UPON SAID ANODE AND CATHODE OF SAID ELECTROCHEMICAL CONTROL DEVICE THROUGH A SHUNT, SAID DEVICE BEING CONSTRUCTED AND ARRANGED TO UNDERGO A PRESSURE CHANGED IN SAID GAS CAVITY AS A FUNCTION OF IR CHANGE IMPOSES UPON SAID ANODE AND CATHODE BY SAID SOURCE TO ACTUATE A PRESSURE FORCE TRANSMITTER.
Claim 3
Dependent Claim
32 words
The power system of claim 1 wherein in said control device the cathode is a lightweight electrolyte comprising a conductive metal screen embedded in a catalytic mixture of metal and hydrophobic polymer.
Claim 4
Dependent Claim
18 words
The power system of claim 1 wherein in said control device the cathode is an activated carbon disc.
References Cited (Backward Citations)
US1916235A
Cited
US2925455A
Cited
US2984607A
Cited
US3159506A
Cited
US3432356A
Cited
US3585078A
Cited
US3616335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |