US3753110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timing apparatus using electrochemical memory device
Assignee: Sanyo Electric Co Ltd
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Filing: 1971-12-22
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Granted: 1973-08-14
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Expires: 1991-12-22
Abstract
Abstract An electrochemical potential memory device comprising a cathode mainly comprising silver, an anode mainly comprising silver chalcogenide, and a silver ion conductive solid state electrolyte sandwiched therebetween is connected to a current source for selectively driving the device in a charging state or discharging state and to a high input impedance direct current amplifier responsive to the terminal voltage of the device, and a timing operation signal proportional to the lapse of the charging or discharging time is obtained from the amplifier. In a preferred embodiment, the potential memory device comprises a main cathode for supply of the charging or discharging current and an auxiliary cathode for detecting the terminal voltage of the device, the latter being connected to the high input impedance amplifier. The timing apparatus employing such device eliminates disadvantageous influence caused by an overvoltage as occurs at the time of current conduction in the device.
Inventors
- 👤 H Ikeda
- 👤 Y Ooe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:13
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/28; H01; H01H; H01H43/00; H01H43/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
179 words
A timing apparatus comprising: a solid state electrochemical potential memory device comprising: a main cathode including an active metal, an auxiliary cathode including an active metal, an anode comprising an alloy including said metal, and a solid state electrolyte having high ion conductivity sandwiched between said cathodes and said anode, said device exhibiting a terminal voltage between said anode and said cathodes linearly changing as a function of the charging or discharging quantity of electricity fed to said device in accordance with the anode being positive or negative, respectively, means connected to said main cathode for providing a substantially constant current therethrough to said device in a selected direction, thereby selectively charging or discharging said device, a direct current amplifier having a high impedance input connected to said auxiliary cathode and responsive to the voltage between the anode and auxiliary cathode of said device, and an output means coupled to said direct current amplifier for providing a timing operation signal, said signal being proportional to the lapse of time of, selectively, the charging or discharging operation of said device.
Claim 2
Dependent Claim
179 words
A timing apparatus comprising: a solid state electrochemical potential memory device comprising: a main cathode including an active metal, an auxiliary cathode including an active metal, an anode comprising an alloy including said metal, and a solid state electrolyte having high ion conductivity sandwiched between said cathodes and said anode, said device exhibiting a terminal voltage between said anode and said cathodes linearly changing as a function of the charging or discharging quantity of electricity fed to said device in accordance with the anode being positive or negative, respectively, means connected to said main cathode for providing a substantially constant current therethrough to said device in a selected direction, thereby selectively charging or discharging said device, a direct current amplifier having a high impedance input connected to said auxiliary cathode and responsive to the voltage between the anode and auxiliary cathode of said device, and an output means coupled to said direct current amplifier for providing a timing operation signal, said signal being proportional to the lapse of time of, selectively, the charging or discharging operation of said device.
Claim 3
Dependent Claim
58 words
A timing apparatus in accordance with claim 1, in which said current providing means comprises a means for relatively quickly charging said device in a charging cycle, and a means for relatively slowly discharging said device in a discharging cycle, said charging cycle being used for time setting and said discharging cycle being used for the timing operation.
Claim 4
Dependent Claim
46 words
A timing apparatus in accordance with claim 2, in which said current providing means further includes means selectively operable for relatively quickly discharging said device in a quick discharge cycle, said quick discharge cycle being used for resetting the time theretofore set in a charging cycle.
Claim 5
Dependent Claim
16 words
A timing apparatus in accordance with claim 1, in which said output means comprises an indicator.
Claim 6
Dependent Claim
27 words
A timing apparatus in accordance with claim 4, in which said indicator provides visual indication of the voltage of said device as a function of the time.
Claim 7
Dependent Claim
19 words
A timing apparatus in accordance with claim 1, in which said direct current amplifier comprises a field effect transistor.
Claim 8
Dependent Claim
18 words
A timing apparatus in accordance with claim 1, in which said direct current amplifier comprises a differential amplifier.
Claim 9
Dependent Claim
30 words
A timing apparatus in accordance with claim 1, in which the cathode of said device includes Ag and the anode thereof includes an alloy of Ag and a chalcogen element.
Claim 10
Dependent Claim
19 words
A timing apparatus in accordance with claim 8, in which the anode of said device includes an Ag-Te alloy.
Claim 11
Dependent Claim
30 words
A timing apparatus in accordance with claim 9, in which the anode of said device includes an alloy of Ag and a chalcogen element, graphite and a solid state electrolyte.
Claim 12
Dependent Claim
22 words
A timing apparatus in accordance with claim 10, in which said alloy of Ag and a chalcogen element is an Ag-Te alloy.
Claim 13
Dependent Claim
22 words
A timing apparatus in accordance with claim 11, in which the anode of said device is less than 1 mm in thickness.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |