US2932809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable current device
Assignee: Lear Inc
•
Filing: 1956-09-06
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Granted: 1960-04-12
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Expires: 1976-09-06
Abstract
No abstract record available.
Inventors
- 👤 John F Schoeppel
- 👤 Stuart L Varner
- 👤 Frederick W Herr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A VARIABLE RESISTOR WHICH INCLUDES A CLOSED RECEPTACLE CONTAINING AN ELECTROLYTE AND ELECTRODES HAVING A SURFACE ADAPTED TO CONTACT SAID ELECTROLYTE TO PROVIDE A CURRENT-CONDUCTING PATH BETWEEN SAID ELECTROLYTE AND SAID ELECTRODES, THE IMPROVEMENT WHEREIN SAID ELECTROLYTE COMPRISES A SOLUTION, IN A SATURATED KETONE, OF POTASSIUM IODIDE AND IODINE, THE POTASSIUM IODIDE BEING PRESENT IN PROPORTIONS RANGING FROM ABOUT 4 TO ABOUT 6 GRAMS PER 100 ML. OF SAID ELECTROLYTE SOLUTION, AND SAID IODINE BEING PRESENT IN PROPORTIONS RANGING FROM ABOUIT 10 TO ABOUT 14 GRAMS PER 100 ML. OF SAID ELECTROLYTE SOLUTION.
Claim 2
Dependent Claim
94 words
IN A VARIABLE RESISTOR WHICH INCLUDES A CLOSED RECEPTACLE CONTAINING AN ELECTROLYTE AND ELECTRODES HAVING A SURFACE ADAPTED TO CONTACT SAID ELECTROLYTE TO PROVIDE A CURRENT-CONDUCTING PATH BETWEEN SAID ELECTROLYTE AND SAID ELECTRODES, THE IMPROVEMENT WHEREIN SAID ELECTROLYTE COMPRISES A SOLUTION, IN A SATURATED KETONE, OF POTASSIUM IODIDE AND IODINE, THE POTASSIUM IODIDE BEING PRESENT IN PROPORTIONS RANGING FROM ABOUT 4 TO ABOUT 6 GRAMS PER 100 ML. OF SAID ELECTROLYTE SOLUTION, AND SAID IODINE BEING PRESENT IN PROPORTIONS RANGING FROM ABOUIT 10 TO ABOUT 14 GRAMS PER 100 ML. OF SAID ELECTROLYTE SOLUTION.
References Cited (Backward Citations)
US2387313A
Cited
US2764653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |