Patent US3230455A successfully refreshed from Google Patents.
US3230455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-powered pulse radio transmitter
Assignee: Individual
•
Filing: 1962-12-05
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Granted: 1966-01-18
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Expires: 1982-12-05
Abstract
No abstract record available.
Inventors
- 👤 Jr James P Kosta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:51
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/02; H04B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
235 words
A PULSED RADIO TRANSMITTER FOR SELECTIVELY TRANSMITTING A PULSED CONTINUOUS ELECTROMAGNETIC WAVE; SAID TRANSMITTER COMPRISING A TRANSISTOR HAVING A BASE ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE; A SELECTIVELY OPERATED SOURCE OF ALTERNATING CURRENT FOR SUPPLYING ENERGY TO SAID TRANSISTOR; PURE RESISTIVE MEANS FOR CONNECTING SAID BASE ELECTRODE TO ONE SIDE OF SAID SOURCE TO APPLY TO THE BASE ELECTRODE A POTENTIAL AT EVERY OTHER HALF-CYCLE OF THE ALTERNATING CURRENT TO RENDER SAID TRANSISTOR CONDUCTIVE; MEANS FOR DIRECTLY CONNECTING SAID EMITTER ELECTRODE TO THE OTHER SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO SAID BASE ELECTRODE; A TANK CIRCUIT TUNED TO THE FREQUENCY OF THE CONTINUOUS WAVE FOR PRODUCING OSCILLATIONS AT SAID FREQUENCY WHEN PULSED WITH CURRENT FROM SAID SOURCE; MEANS FOR DIRECTLY CONNECTING SAID COLLECTOR ELECTORDE TO ONE SIDE OF SAID TANK CIRCUIT TO SUPPLY CURRENT FROM SAID SOURCE TO SAID TANK CIRCUIT WHEN SAID TRANSISTOR BECOMES CONDUCTIVE; MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID TANK CIRCUIT TO THE ONE SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO THE TANK CIRCUIT FROM SAID COLLECTOR ELECTRODE; AND A FEEDBACK PATH; SAID FEEDBACK PATH COMPRISING A FREQUENCY STABILIZING CRYSTAL; MEANS FOR DIRECTLY CONNECTING ONE SIDE OF SAID CRYSTAL TO SAID ONE SIDE OF THE TANK CIRCUIT AND MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID CRYSTAL TO SAID BASE ELECTRODE.
Claim 2
Dependent Claim
235 words
A PULSED RADIO TRANSMITTER FOR SELECTIVELY TRANSMITTING A PULSED CONTINUOUS ELECTROMAGNETIC WAVE; SAID TRANSMITTER COMPRISING A TRANSISTOR HAVING A BASE ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE; A SELECTIVELY OPERATED SOURCE OF ALTERNATING CURRENT FOR SUPPLYING ENERGY TO SAID TRANSISTOR; PURE RESISTIVE MEANS FOR CONNECTING SAID BASE ELECTRODE TO ONE SIDE OF SAID SOURCE TO APPLY TO THE BASE ELECTRODE A POTENTIAL AT EVERY OTHER HALF-CYCLE OF THE ALTERNATING CURRENT TO RENDER SAID TRANSISTOR CONDUCTIVE; MEANS FOR DIRECTLY CONNECTING SAID EMITTER ELECTRODE TO THE OTHER SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO SAID BASE ELECTRODE; A TANK CIRCUIT TUNED TO THE FREQUENCY OF THE CONTINUOUS WAVE FOR PRODUCING OSCILLATIONS AT SAID FREQUENCY WHEN PULSED WITH CURRENT FROM SAID SOURCE; MEANS FOR DIRECTLY CONNECTING SAID COLLECTOR ELECTORDE TO ONE SIDE OF SAID TANK CIRCUIT TO SUPPLY CURRENT FROM SAID SOURCE TO SAID TANK CIRCUIT WHEN SAID TRANSISTOR BECOMES CONDUCTIVE; MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID TANK CIRCUIT TO THE ONE SIDE OF SAID SOURCE TO SUPPLY A RETURN PATH FOR THE CURRENT APPLIED TO THE TANK CIRCUIT FROM SAID COLLECTOR ELECTRODE; AND A FEEDBACK PATH; SAID FEEDBACK PATH COMPRISING A FREQUENCY STABILIZING CRYSTAL; MEANS FOR DIRECTLY CONNECTING ONE SIDE OF SAID CRYSTAL TO SAID ONE SIDE OF THE TANK CIRCUIT AND MEANS FOR DIRECTLY CONNECTING THE OTHER SIDE OF SAID CRYSTAL TO SAID BASE ELECTRODE.
References Cited (Backward Citations)
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |