US3242495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direction finder
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1963-04-17
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Granted: 1966-03-22
•
Expires: 1983-04-17
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Kohl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:42
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A DIRECTION FINDER FOR DETERMINING THE DIRECTION LINE OF AN ELECTROMAGNETIC SIGNAL COMPRISING A FIRST DIRECTIONAL PICKUP COIL, AN AMPLIFIER MEANS CONNECTED TO THE OUTPUT OF SAID FIRST COIL, A SECOND DIRECTIONAL PICKUP COIL POSITIONED WITH ITS PLANE OF RECEPTION SUBSTANTIALLY PERPENDICULAR TO THE PLANE OF RECEPTION OF SAID FIRST PICKUP COIL, A SECOND AMPLIFIER MEANS CONNECTED TO THE OUTPUT OF SAID SECOND PICKUP COIL, VOLTAGE COMPARISON MEANS CONNECTED TO THE OUTPUT OF BOTH OF SAID AMPLIFIERS, REFERENCE VOLTAGE MEANS CONNECTED TO SAID VOLTAGE COMPARISON MEANS FOR PROVIDING A PREDETERMINED REFERENCE VOLTAGE, SAID VOLTAGE COMPARISON MEANS BEING ADAPTED TO PROVIDE A MAXIMUM OUTPUT SIGNAL ONLY WHEN ONE OF SAID PICKUP COILS PROVIDES AN OUTPUT WHICH IS LESS THAN SAID REFERENCE VOLTAGE.
Claim 2
Dependent Claim
121 words
A DIRECTION FINDER FOR DETERMINING THE DIRECTION LINE OF AN ELECTROMAGNETIC SIGNAL COMPRISING A FIRST DIRECTIONAL PICKUP COIL, AN AMPLIFIER MEANS CONNECTED TO THE OUTPUT OF SAID FIRST COIL, A SECOND DIRECTIONAL PICKUP COIL POSITIONED WITH ITS PLANE OF RECEPTION SUBSTANTIALLY PERPENDICULAR TO THE PLANE OF RECEPTION OF SAID FIRST PICKUP COIL, A SECOND AMPLIFIER MEANS CONNECTED TO THE OUTPUT OF SAID SECOND PICKUP COIL, VOLTAGE COMPARISON MEANS CONNECTED TO THE OUTPUT OF BOTH OF SAID AMPLIFIERS, REFERENCE VOLTAGE MEANS CONNECTED TO SAID VOLTAGE COMPARISON MEANS FOR PROVIDING A PREDETERMINED REFERENCE VOLTAGE, SAID VOLTAGE COMPARISON MEANS BEING ADAPTED TO PROVIDE A MAXIMUM OUTPUT SIGNAL ONLY WHEN ONE OF SAID PICKUP COILS PROVIDES AN OUTPUT WHICH IS LESS THAN SAID REFERENCE VOLTAGE.
References Cited (Backward Citations)
US2026254A
Cited
US2061737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |