US3257614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency measuring utilizing reflected waves
Assignee: HALLICRAFTERS CO
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Filing: 1962-12-17
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Granted: 1966-06-21
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Robert B Hankin
- 👤 Ross Monte
- 👤 Alva C Todd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:14
CPC Classifications
H; H03; H03D; H03D9/00; H03D9/02; H03D9/04; G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A FREQUENCY DISCRIMINATOR FOR MEASURING THE FREQUENCY OF A SIGNAL RECEIVED FROM A SOURCE, COMPRISING: A T-CONNECTOR HAVING AN INPUT CONNECTED WITH SAID SOURCE AND A PAIR OF OUTPUTS; A TWIN LINE TRANSMISSION MEMBER CONNECTED WITH ONE OF SAID OUTPUTS AND HAVING A FIRST STUB SECTION CONNECTED THEREWITH; A SECOND TWIN LINE TRANSMISSION MEMBER CONNECTED WITH THR OTHER OF SAID OUTPUTS AND HAVING A SECOND STUB SECTION CONNECTED IN SERIES THEREIN, SAID FIRST AND SECOND STUB SECTIONS HAVING COMPLEMENTARY TRANSMISSION CHARACTERISTICS, THE LENGTH OF SAID TWIN LINE TRANSMISSION MEMBERS FROM SAID T-CONNECTOR OUTPUTS TO SAID STUBS BEING THE SAME; TERMINATING IMPEDANCES CONNECTED WITH EACH OF SAID LINES AND HAVING AN IMPEDANCE EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE LINES; MEANS COUPLED TO SAID IMPEDANCES FOR DERIVING SIGNALS REPRESENTATIVE OF THE SIGNALS PASSED BY SAID TRANSMISSION LINES; AND MEANS FOR DISPLAYING A RATIO OF SAID SIGNALS REPRESENTATIVE OF THE FREQUENCY OF THE SIGNAL FROM SAID SOURCE.
Claim 2
Dependent Claim
155 words
A FREQUENCY DISCRIMINATOR FOR MEASURING THE FREQUENCY OF A SIGNAL RECEIVED FROM A SOURCE, COMPRISING: A T-CONNECTOR HAVING AN INPUT CONNECTED WITH SAID SOURCE AND A PAIR OF OUTPUTS; A TWIN LINE TRANSMISSION MEMBER CONNECTED WITH ONE OF SAID OUTPUTS AND HAVING A FIRST STUB SECTION CONNECTED THEREWITH; A SECOND TWIN LINE TRANSMISSION MEMBER CONNECTED WITH THR OTHER OF SAID OUTPUTS AND HAVING A SECOND STUB SECTION CONNECTED IN SERIES THEREIN, SAID FIRST AND SECOND STUB SECTIONS HAVING COMPLEMENTARY TRANSMISSION CHARACTERISTICS, THE LENGTH OF SAID TWIN LINE TRANSMISSION MEMBERS FROM SAID T-CONNECTOR OUTPUTS TO SAID STUBS BEING THE SAME; TERMINATING IMPEDANCES CONNECTED WITH EACH OF SAID LINES AND HAVING AN IMPEDANCE EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE LINES; MEANS COUPLED TO SAID IMPEDANCES FOR DERIVING SIGNALS REPRESENTATIVE OF THE SIGNALS PASSED BY SAID TRANSMISSION LINES; AND MEANS FOR DISPLAYING A RATIO OF SAID SIGNALS REPRESENTATIVE OF THE FREQUENCY OF THE SIGNAL FROM SAID SOURCE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |