US3112476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic switches
Assignee: GTE Sylvania Inc
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Filing: 1960-01-07
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Granted: 1963-11-26
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Expires: 1980-01-07
Abstract
No abstract record available.
Inventors
- 👤 Edmund U Cohler
- 👤 George T Barrett
- 👤 Thomas W Lawless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:12
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/94; H03K17/96; H03K17/962
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A BISTABLE ELECTRONIC SWITCH COMPRISING, FIRST AND SECOND INDICATING ELEMENTS CONNECTED TO A COMMON SOURCE OF ELECTRICAL ENERGY AND OPERATIVE WHEN ENERGIZED BY CURRENT FROM SAID SOURCE TO PRODUCE A VISUAL INDICATION, FIRST AND SECOND SERIES-RESONANT CIRCUITS COUPLED TO SAID FIRST AND SECOND INDICATING ELEMENTS, RESPECTIVELY, AND EACH BEING OPERATIVE WHEN TUNED TO A GIVEN FREQUENCY TO CAUSE ITS RESPECTIVE INDICATING ELEMENT TO BE ENERGIZED, FIRST AND SECOND CAPACITOR PLATES RESPECTIVELY CONNECTED TO SAID FIRST AND SECOND SERIES-RESONANT CIRCUITS AND OPERATIVE IN RESPONSE TO EXPOSURE TO THE CAPACITIVE EFFECT OF TOUCH BY A HUMAN FINGER TO TUNE ITS RESPECTIVE RESONANT CIRCUIT TO A FREQUENCY DIFFERENT FROM THE FREQUENCY AT WHICH IT IS TUNED WHEN SAID CAPACITIVE EFFECT IS ABSENT, AND MEANS INTERCOUPLING SAID FIRST AND SECOND INDICATING ELEMENTS WITH SAID SECOND AND FIRST SERIES-RESONANT CIRCUITS, RESPECTIVELY, AND OPERATIVE IN RESPONSE TO THE ENERGIZATION OF THE INDICATING ELEMENT COUPLED TO ONE OF SAID SERIES-RESONANT CIRCUITS TO PREVENT ENERGIZATION OF THE INDICATING ELEMENT COUPLED TO THE OTHER OF SAID CIRCUITS.
Claim 2
Dependent Claim
168 words
A BISTABLE ELECTRONIC SWITCH COMPRISING, FIRST AND SECOND INDICATING ELEMENTS CONNECTED TO A COMMON SOURCE OF ELECTRICAL ENERGY AND OPERATIVE WHEN ENERGIZED BY CURRENT FROM SAID SOURCE TO PRODUCE A VISUAL INDICATION, FIRST AND SECOND SERIES-RESONANT CIRCUITS COUPLED TO SAID FIRST AND SECOND INDICATING ELEMENTS, RESPECTIVELY, AND EACH BEING OPERATIVE WHEN TUNED TO A GIVEN FREQUENCY TO CAUSE ITS RESPECTIVE INDICATING ELEMENT TO BE ENERGIZED, FIRST AND SECOND CAPACITOR PLATES RESPECTIVELY CONNECTED TO SAID FIRST AND SECOND SERIES-RESONANT CIRCUITS AND OPERATIVE IN RESPONSE TO EXPOSURE TO THE CAPACITIVE EFFECT OF TOUCH BY A HUMAN FINGER TO TUNE ITS RESPECTIVE RESONANT CIRCUIT TO A FREQUENCY DIFFERENT FROM THE FREQUENCY AT WHICH IT IS TUNED WHEN SAID CAPACITIVE EFFECT IS ABSENT, AND MEANS INTERCOUPLING SAID FIRST AND SECOND INDICATING ELEMENTS WITH SAID SECOND AND FIRST SERIES-RESONANT CIRCUITS, RESPECTIVELY, AND OPERATIVE IN RESPONSE TO THE ENERGIZATION OF THE INDICATING ELEMENT COUPLED TO ONE OF SAID SERIES-RESONANT CIRCUITS TO PREVENT ENERGIZATION OF THE INDICATING ELEMENT COUPLED TO THE OTHER OF SAID CIRCUITS.
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) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |