US3277384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced frequency detector apparatus
Assignee: Hazeltine Research Inc
•
Filing: 1963-11-04
•
Granted: 1966-10-04
•
Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Bernard D Loughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:40
CPC Classifications
H; H03; H03G; H03G11/00; H03G11/02; H03D; H03D3/00; H03D3/02; H03D3/04; H04; H04J; H04J1/00; H04J1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
BALANCED FREQUENCY DETECTOR APPARATUS, COMPRISING: MEANS FOR SUPPLYING A FREQUENCY MODULATED WAVE SIGNAL SUBJECTED TO UNDESIRED PEAK-TO-PEAK AMPLITUDE VARIATIONS; MEANS FOR DIFFERENTIATING SAID WAVE SIGNAL AND FOR RECTIFYING SAID DIFFERENTIATED SIGNAL TO DERIVE A FIRST TRAIN OF SAME POLARITY PULSES HAVING AN AVERAGE COMPONENT JOINTLY REPRESENTATIVE OF THE FREQUENCY AND AMPLITUDE VARIATIONS OF SAID SIGNAL; AND MEANS RESPONSIVE TO THE PEAK AMPLITUDE OF SAID PULSES FOR NONLINEARLY LIMITING SAID FIRST TRAIN OF PULSES SUCH THAT PULSES OF HIGHER PEAK AMPLITUDE ARE LIMITED TO A PROPORTIONATELY GREATER EXTENT THAN PULSES OF LOWER PEAK AMPLITUDE, THEREBY DEVELOPING A TRAIN OF OUTPUT PULSES HAVING AN AVERAGE COMPONENT REPRESENTATIVE OF THE FREQUENCY OF SAID WAVE SIGNAL AND BEING SUBSTANTIALLY FREE FROM THE EFFECTS OF SAID UNDESIRED AMPLITUDE VARIATIONS.
Claim 2
Dependent Claim
124 words
BALANCED FREQUENCY DETECTOR APPARATUS, COMPRISING: MEANS FOR SUPPLYING A FREQUENCY MODULATED WAVE SIGNAL SUBJECTED TO UNDESIRED PEAK-TO-PEAK AMPLITUDE VARIATIONS; MEANS FOR DIFFERENTIATING SAID WAVE SIGNAL AND FOR RECTIFYING SAID DIFFERENTIATED SIGNAL TO DERIVE A FIRST TRAIN OF SAME POLARITY PULSES HAVING AN AVERAGE COMPONENT JOINTLY REPRESENTATIVE OF THE FREQUENCY AND AMPLITUDE VARIATIONS OF SAID SIGNAL; AND MEANS RESPONSIVE TO THE PEAK AMPLITUDE OF SAID PULSES FOR NONLINEARLY LIMITING SAID FIRST TRAIN OF PULSES SUCH THAT PULSES OF HIGHER PEAK AMPLITUDE ARE LIMITED TO A PROPORTIONATELY GREATER EXTENT THAN PULSES OF LOWER PEAK AMPLITUDE, THEREBY DEVELOPING A TRAIN OF OUTPUT PULSES HAVING AN AVERAGE COMPONENT REPRESENTATIVE OF THE FREQUENCY OF SAID WAVE SIGNAL AND BEING SUBSTANTIALLY FREE FROM THE EFFECTS OF SAID UNDESIRED AMPLITUDE VARIATIONS.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |