US3488598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed loop control system employing a-c amplification of d-c error correcting signals
Assignee: Collins Radio Co
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Filing: 1962-11-13
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Granted: 1970-01-06
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Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Eugene Hoo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:56
CPC Classifications
G; G05; G05B; G05B11/00; G05B11/01; G05B11/36; H; H03; H03J; H03J7/00; H03J7/02; H03J7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
MEANS FOR INTEGRATING A D-C INPUT SIGNAL COMPRISING FIRST CONVERTING MEANS FOR CONVERTING SAID D-C INPUT SIGNAL INTO A FIRST A-C SIGNAL WITH A FREQUENCY F AND AN AMPLITUDE PROPORTIONAL TO THE AMPLITUDE OF SAID D-C INPUT SIGNAL, RESONATOR MEANS TUNED TO THE FREQUENCY F AND CONSTRUCTED TO PRODUCE, IN RESPONSE TO SAID FIRST A-C SIGNAL, AN OUTPUT A-C SIGNAL WHOSE AMPLITUDE REPRESENTS THE ACCUMULATED ENERGY OF SAID FIRST A-C SIGNAL, SECOND CONVERTING MEANS FOR CONVERTING SAID SECOND A-C SIGNAL BACK INTO A D-C SIGNAL WHOSE AMPLUTIDE IS PROPORTIONAL TO THE AMPLITUDE OF SAID SECOND A-C SIGNAL.
Claim 2
Dependent Claim
97 words
MEANS FOR INTEGRATING A D-C INPUT SIGNAL COMPRISING FIRST CONVERTING MEANS FOR CONVERTING SAID D-C INPUT SIGNAL INTO A FIRST A-C SIGNAL WITH A FREQUENCY F AND AN AMPLITUDE PROPORTIONAL TO THE AMPLITUDE OF SAID D-C INPUT SIGNAL, RESONATOR MEANS TUNED TO THE FREQUENCY F AND CONSTRUCTED TO PRODUCE, IN RESPONSE TO SAID FIRST A-C SIGNAL, AN OUTPUT A-C SIGNAL WHOSE AMPLITUDE REPRESENTS THE ACCUMULATED ENERGY OF SAID FIRST A-C SIGNAL, SECOND CONVERTING MEANS FOR CONVERTING SAID SECOND A-C SIGNAL BACK INTO A D-C SIGNAL WHOSE AMPLUTIDE IS PROPORTIONAL TO THE AMPLITUDE OF SAID SECOND A-C SIGNAL.
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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |