US3117288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant amplitude oscillator
Assignee: Robertshaw Controls Co
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Filing: 1959-07-07
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Granted: 1964-01-07
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Expires: 1979-07-07
Abstract
No abstract record available.
Inventors
- 👤 Victor J Modiano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:59
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
AN ELECTRONIC OSCILLATOR CIRCUIT INCLUDING A PLURAL ELECTRODE AMPLIFYING DEVICE, A DIRECT CURRENT SOURCE OF OPERATING POTENTIAL, A NON-LINER RESISTANCE ELEMENT HAVING A SMALLER VALUE OF INCREMENTAL RESISTANCE FOR LARGER VALUES OF CURRENT, MEANS CONNECTING SAID RESISTANCE ELEMENT AND SAID DIRECT CURRENT SOURCE IN SERIES TO ONE OF SAID PLURAL ELECTRODES, A CIRCUIT INCLUDING AN ASYMMETRICAL CONDUCTING DEVICE CONNECTED IN PARALLEL WITH SAID MEANS AND SAID RESISTANCE ELEMENT TO CONDUCT WHEN THE ELECTRICAL POTENTIAL AT SAID ONE ELECTRODE EXCEEDS THE ELECTRICAL POTENTIAL OF SAID DIRECT CURRENT SOURCE, AND MEANS BIASING SAID AMPLIFYING DEVICE TO LOWERED CONDUCTION IN ACCORDANCE WITH SAID INCREASE OF POTENTIAL ABOVE SAID POTENTIAL OF THE DIRECT CURRENT SOURCE.
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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |