US3218388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote control system
Assignee: RCA Corp
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Filing: 1962-01-17
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Granted: 1965-11-16
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Expires: 1982-01-17
Abstract
No abstract record available.
Inventors
- 👤 Thornley C Jobe
- 👤 Edward J Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:02
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
IN A SYSTEM FOR AUTOMATICALLY TUNING A SIGNAL WAVE RECEIVER TO RADIO FREQUENCY SIGNALS, THE COMBINATION COMPRISING, A MOTOR COUPLED TO DRIVE SAID TUNING ELEMENT, A MOTOR CONTROL CIRCUIT RESPONSIVE TO FIRST AND SECOND CONTROL VOLTAGE TO CONTROL THE ENERGIZATION OF SAID MOTOR, MEANS IN SAID SIGNAL WAVE RECEIVER FOR DEVELOPING A FIRST CONTROL VOLTAGE WHEN A RADIO FREQUENCY SIGNAL IS PRESENT, SAID FIRST CONTROL VOLTAGE BEING OF AN AMPLITUDE RELATED TO THE AMPLITUDE OF SAID RADIO FREQUENCY SIGNAL, MEANS FOR APPLYING SAID FIRST CONTROL VOLTAGE TO SAID MOTOR CONTROL CIRCUIT TO DE-ENERGIZE SAID MOTOR WHEN A RADIO FREQUENCY IS PRESENT, SAID MEANS FOR APPLYING SAID FIRST CONTROL VOLTAGE INCLUDING A CLAMP CIRCUIT FOR CLAMPING SAID FIRST CONTROL VOLTAGE TO A PRE-
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |