Patent US3179812A successfully refreshed from Google Patents.
US3179812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sine wave divider for electrical musical instruments
Assignee: Hammond Organ Co
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Filing: 1961-07-25
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Granted: 1965-04-20
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Expires: 1981-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ray B Schrecongost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:55
CPC Classifications
G; G10; G10H; G10H5/00; G10H5/02; G10H5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PLURALITY OF SINE WAVE FREQUENCY DIVIDERS FOR COUPLING TO AN OSCILLATOR IN CASCADED FORM, EACH DIVIDER COMPRISING A TRANSISTOR HAVING A BASE, AN EMITTER, AND A COLLECTOR, AN INPUT CIRCUIT COUPLED TO THE BASE, A RESISTANCE CONNECTING THE EMITTER TO A SOURCE OF ONE POTENTIAL, A RESONANT CIRCUIT HAVING AN INDUCTIVE WINDING AND SERIES CONNECTED CAPACITOR RESONANT AT APPROXIMATELY THE DESIRED OUTPUT FREQUENCY, THE CAPACITORS CONNECTING THE COLLECTOR TO THE ONE POTENTIAL SOURCE AND THE INDUCTIVE WINDING CONNECTING THE COLLECTOR TO A SOURCE OF ANOTHER POTENTIAL, THE JUNCTION BETWEEN THE CAPACITORS BEING CONNECTED TO THE EMITTER TO PROVIDE A REGENERATIVE FEEDBACK, MEANS
Claim 2
Dependent Claim
103 words
A PLURALITY OF SINE WAVE FREQUENCY DIVIDERS FOR COUPLING TO AN OSCILLATOR IN CASCADED FORM, EACH DIVIDER COMPRISING A TRANSISTOR HAVING A BASE, AN EMITTER, AND A COLLECTOR, AN INPUT CIRCUIT COUPLED TO THE BASE, A RESISTANCE CONNECTING THE EMITTER TO A SOURCE OF ONE POTENTIAL, A RESONANT CIRCUIT HAVING AN INDUCTIVE WINDING AND SERIES CONNECTED CAPACITOR RESONANT AT APPROXIMATELY THE DESIRED OUTPUT FREQUENCY, THE CAPACITORS CONNECTING THE COLLECTOR TO THE ONE POTENTIAL SOURCE AND THE INDUCTIVE WINDING CONNECTING THE COLLECTOR TO A SOURCE OF ANOTHER POTENTIAL, THE JUNCTION BETWEEN THE CAPACITORS BEING CONNECTED TO THE EMITTER TO PROVIDE A REGENERATIVE FEEDBACK, MEANS
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |