Patent US3086175A successfully refreshed from Google Patents.
US3086175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductanceless fm discriminator
Assignee: Westinghouse Electric Corp
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Filing: 1961-02-06
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Granted: 1963-04-16
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Expires: 1981-02-06
Abstract
No abstract record available.
Inventors
- 👤 Irving F Barditch
- 👤 Raymond G Hartenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:43
CPC Classifications
H; H03; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A DISCRIMINATOR CIRCUIT OPERATIVE WITHIN A FREQUENCY MODULATED RECEIVER AND INCLUDING SIGNAL INPUT MEANS TO RECEIVE FREQUENCY MODULATED SIGNALS, A PAIR OF LIMITING MEANS TO COMMONLY RECEIVE SAID FREQUENCY MODULATED SIGNALS AND BEING OPERATIVE TO AMPLITUDE GAIN CONTROL SAID FREQUENCY MODULATED SIGNALS, DETECTING MEANS TO RECEIVE SAID FREQUENCY MODULATING SIGNALS AND BEING OPERATIVE TO GAIN CONTROL SAID LIMITING MEANS, A PAIR OF TRANSISTOR TUNED AMPLIFIERS TO COMMONLY RECEIVE SAID GAIN CONTROLLED SIGNALS FROM SAID LIMITING MEANS AND BEING EACH TUNED RESPECTIVELY TO THE DIFFERENT MAXIMUM DEVIATION FREQUENCIES FROM THE REST FREQUENCY OF SAID FREQUENCY MODULATED SIGNALS, A PAIR OF UNDIRECTIONAL DEVICES TO SEPARATELY RECEIVE THE OUTPUTS OF EACH OF SAID TUNED AMPLIFIERS AND BEING OPERATIVE TO PROVIDE UNIDIRECTIONAL OUTPUT SIGNALS INDICATIVE OF THE OUTPUT OF SAID TUNED AMPLIFIERS, AND COMPARING MEANS TO RECEIVE SAID UNIDIRECTIONAL SIGNALS AND BEING OPERATIVE TO PROVIDE AN OUTPUT INDICATIVE OF THE AMPLITUDE DIFFERENCE BETWEEN SAID UNIDIRECTIONAL SIGNALS.
Claim 2
Dependent Claim
152 words
A DISCRIMINATOR CIRCUIT OPERATIVE WITHIN A FREQUENCY MODULATED RECEIVER AND INCLUDING SIGNAL INPUT MEANS TO RECEIVE FREQUENCY MODULATED SIGNALS, A PAIR OF LIMITING MEANS TO COMMONLY RECEIVE SAID FREQUENCY MODULATED SIGNALS AND BEING OPERATIVE TO AMPLITUDE GAIN CONTROL SAID FREQUENCY MODULATED SIGNALS, DETECTING MEANS TO RECEIVE SAID FREQUENCY MODULATING SIGNALS AND BEING OPERATIVE TO GAIN CONTROL SAID LIMITING MEANS, A PAIR OF TRANSISTOR TUNED AMPLIFIERS TO COMMONLY RECEIVE SAID GAIN CONTROLLED SIGNALS FROM SAID LIMITING MEANS AND BEING EACH TUNED RESPECTIVELY TO THE DIFFERENT MAXIMUM DEVIATION FREQUENCIES FROM THE REST FREQUENCY OF SAID FREQUENCY MODULATED SIGNALS, A PAIR OF UNDIRECTIONAL DEVICES TO SEPARATELY RECEIVE THE OUTPUTS OF EACH OF SAID TUNED AMPLIFIERS AND BEING OPERATIVE TO PROVIDE UNIDIRECTIONAL OUTPUT SIGNALS INDICATIVE OF THE OUTPUT OF SAID TUNED AMPLIFIERS, AND COMPARING MEANS TO RECEIVE SAID UNIDIRECTIONAL SIGNALS AND BEING OPERATIVE TO PROVIDE AN OUTPUT INDICATIVE OF THE AMPLITUDE DIFFERENCE BETWEEN SAID UNIDIRECTIONAL SIGNALS.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |