Patent US3196201A successfully refreshed from Google Patents.
US3196201A
Expired / Lapsed
US
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Transistor keyer
Assignee: CG Conn Ltd
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Filing: 1961-04-26
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Granted: 1965-07-20
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Expires: 1981-04-26
Abstract
No abstract record available.
Inventors
- 👤 Lyell J Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:45
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/02; G10H1/04; G10H1/053; G10H1/057; Y; Y10; Y10S; Y10S84/00; Y10S84/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN AN ELECTRONIC ORGAN INCLUDING A TONE GENERATOR FOR PROVIDING A SIGNAL CORRESPONDING TO A MUSICAL TONE, A KEYER ADAPTED TO CONTROL THE ATTACK AND DECAY OF THE TONE INCLUDING IN COMBINATION, A TRANSISTOR HAVING INPUT, OUTPUT AND CONTROL ELECTRODES, MEANS FOR APPLYING THE SIGNAL FROM THE TONE GENERATOR TO SAID INPUT ELECTRODE, MEANS CONNECTED TO SAID OUTPUT ELECTRODE FOR DERIVING THE SIGNAL THEREFROM, AND A CONTROL CIRCUIT CONNECTED TO SAID CONTROL ELECTRODE INCLUDING BLOCKING VOLTAGE SUPPLY MEANS FOR APPLYING A FIRST POTENTIAL TO SAID CONTROL ELECTRODE TO PREVENT CONDUCTION BETWEEN SAID INPUT ELECTRODE AND SAID OUTPUT ELECTRODE, SAID CONTROL CIRCUIT INCLUDING SWITCH MEANS FOR CONTROLLING THE AMOUNT OF BLOCKING VOLTAGE APPLIED TO SAID CONTROL ELECTRODE, SAID CONROL CIRCUIT HAVING MEANS INCLUDING A KEY FOR APPLYING A SECOND POTENTIAL TO SAID CONTROL ELECTRODE TO OVERRIDE SAID FIRST POTENTIAL AND CAUSE SAID TRANSISTOR TO CONDUCT, SAID LAST NAMED MEANS INCLUDING STORAGE MEANS FOR APPLYING A PORTION OF SAID SECOND POTENTIAL TO SAID CONTROL ELECTRODE, WITH SAID PORTION GRADUALLY DIMINISHING AFTER SAID KEY IS RELEASED.
Claim 2
Dependent Claim
173 words
IN AN ELECTRONIC ORGAN INCLUDING A TONE GENERATOR FOR PROVIDING A SIGNAL CORRESPONDING TO A MUSICAL TONE, A KEYER ADAPTED TO CONTROL THE ATTACK AND DECAY OF THE TONE INCLUDING IN COMBINATION, A TRANSISTOR HAVING INPUT, OUTPUT AND CONTROL ELECTRODES, MEANS FOR APPLYING THE SIGNAL FROM THE TONE GENERATOR TO SAID INPUT ELECTRODE, MEANS CONNECTED TO SAID OUTPUT ELECTRODE FOR DERIVING THE SIGNAL THEREFROM, AND A CONTROL CIRCUIT CONNECTED TO SAID CONTROL ELECTRODE INCLUDING BLOCKING VOLTAGE SUPPLY MEANS FOR APPLYING A FIRST POTENTIAL TO SAID CONTROL ELECTRODE TO PREVENT CONDUCTION BETWEEN SAID INPUT ELECTRODE AND SAID OUTPUT ELECTRODE, SAID CONTROL CIRCUIT INCLUDING SWITCH MEANS FOR CONTROLLING THE AMOUNT OF BLOCKING VOLTAGE APPLIED TO SAID CONTROL ELECTRODE, SAID CONROL CIRCUIT HAVING MEANS INCLUDING A KEY FOR APPLYING A SECOND POTENTIAL TO SAID CONTROL ELECTRODE TO OVERRIDE SAID FIRST POTENTIAL AND CAUSE SAID TRANSISTOR TO CONDUCT, SAID LAST NAMED MEANS INCLUDING STORAGE MEANS FOR APPLYING A PORTION OF SAID SECOND POTENTIAL TO SAID CONTROL ELECTRODE, WITH SAID PORTION GRADUALLY DIMINISHING AFTER SAID KEY IS RELEASED.
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) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |