US3217270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency changer with sync input and sync potential controls
Assignee: Motorola Solutions Inc
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Filing: 1963-10-03
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Granted: 1965-11-09
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Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 Jerome P Friedrichs
- 👤 Robert J Munn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:27
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/06; H03B19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A FREQUENCY CHANGING SYSTEM INCLUDING, IN COMBINATION, FREQUENCY CHANGER MEANS ADPATED TO BE COUPLED TO A SOURCE OF ALTERNATING CURRENT SIGNALS, SAID FREQUENCY CHANGER MEANS BEING RESPONSIVE TO SAID SIGNALS TO DEVELOP AN OUTPUT FREQUENCY DIFFERENT FROM SAID SIGNALS, POWER SUPPLY MEANS, SWITCH MEANS COUPLING SAID POWER SUPPLY MEANS TO SAID FREQUENCY CHANGER MEANS, DETECTOR MEANS COUPLED TO SAID FREQUENCY CHANGER MEANS AND RESPONSIVE TO SIGNALS APPLIED TO SAID FREQUENCY CHANGER MEANS TO DEVELOP A CONTROL VOLTAGE, MEANS COUPLING SAID DETECTOR MEANS TO SAID SWITCH MEANS FOR APPLYING SAID CONTROL VOLTAGE THERETO, SAID SWITCH MEANS BEING RESPONSIVE TO SAID CONTROL VOLTAGE TO COUPLE SAID POWER SUPPLY MEANS TO SAID FREQUENCY CHANGER MEANS TO THEREBY RENDER SAID FREQUENCY CHANGER MEANS OPERATIVE.
Claim 2
Dependent Claim
120 words
A FREQUENCY CHANGING SYSTEM INCLUDING, IN COMBINATION, FREQUENCY CHANGER MEANS ADPATED TO BE COUPLED TO A SOURCE OF ALTERNATING CURRENT SIGNALS, SAID FREQUENCY CHANGER MEANS BEING RESPONSIVE TO SAID SIGNALS TO DEVELOP AN OUTPUT FREQUENCY DIFFERENT FROM SAID SIGNALS, POWER SUPPLY MEANS, SWITCH MEANS COUPLING SAID POWER SUPPLY MEANS TO SAID FREQUENCY CHANGER MEANS, DETECTOR MEANS COUPLED TO SAID FREQUENCY CHANGER MEANS AND RESPONSIVE TO SIGNALS APPLIED TO SAID FREQUENCY CHANGER MEANS TO DEVELOP A CONTROL VOLTAGE, MEANS COUPLING SAID DETECTOR MEANS TO SAID SWITCH MEANS FOR APPLYING SAID CONTROL VOLTAGE THERETO, SAID SWITCH MEANS BEING RESPONSIVE TO SAID CONTROL VOLTAGE TO COUPLE SAID POWER SUPPLY MEANS TO SAID FREQUENCY CHANGER MEANS TO THEREBY RENDER SAID FREQUENCY CHANGER MEANS OPERATIVE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |