US3245079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A. d. f. receiver
Assignee: Collins Radio Co
•
Filing: 1963-11-12
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Granted: 1966-04-05
•
Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Harris A Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:42
CPC Classifications
G; G01; G01S; G01S3/00; G01S3/02; G01S3/14; G01S3/46; G01S3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
MEANS FOR DETERMINING THE DIRECTION OF ARRIVAL OF A TRANSMITTED WAVE IN SPACE AT A RECEIVING STATION COMPRISING FIRST AND SECOND PAIRS OF SPACE-SEPARATED RECEIVING ANTENNAS THE BASE LINES BETWEEN PAIRS OF WHICH ARE MUTUALLY PERPENDICULAR, SAID FIRST PAIR OF ANTENNAS CONNECTED TO FIRST SWITCHING MEANS, SAID SECOND PAIR OF ANTENNAS CONNECTED TO SECOND SWITCHING MEANS, EACH OF SAID SWITCHING MEANS BEING ADAPTED TO ALTERNATELY CONNECT THE OUTPUTS FROM THE ANTENNAS OF THE ASSOCIATED ONE OF SAID ANTENNA PAIRS TO THE INPUT OF A RADIO RECEIVER, A FIRST OSCILLATOR GENERATING A SIGNAL W1T, A SECOND OSCILLATOR GENERATING A SIGNAL W2T, MEANS RESPONSIVE TO SAID FIRST AND SECOND OSCILLATOR TO DEVELOP TONES DEFINED AS W1T+W2TAND W1T-W2T SAID FIRST SWITCHING MEANS BEING RESPONSIVE TO THE TONE
Claim 2
Dependent Claim
124 words
MEANS FOR DETERMINING THE DIRECTION OF ARRIVAL OF A TRANSMITTED WAVE IN SPACE AT A RECEIVING STATION COMPRISING FIRST AND SECOND PAIRS OF SPACE-SEPARATED RECEIVING ANTENNAS THE BASE LINES BETWEEN PAIRS OF WHICH ARE MUTUALLY PERPENDICULAR, SAID FIRST PAIR OF ANTENNAS CONNECTED TO FIRST SWITCHING MEANS, SAID SECOND PAIR OF ANTENNAS CONNECTED TO SECOND SWITCHING MEANS, EACH OF SAID SWITCHING MEANS BEING ADAPTED TO ALTERNATELY CONNECT THE OUTPUTS FROM THE ANTENNAS OF THE ASSOCIATED ONE OF SAID ANTENNA PAIRS TO THE INPUT OF A RADIO RECEIVER, A FIRST OSCILLATOR GENERATING A SIGNAL W1T, A SECOND OSCILLATOR GENERATING A SIGNAL W2T, MEANS RESPONSIVE TO SAID FIRST AND SECOND OSCILLATOR TO DEVELOP TONES DEFINED AS W1T+W2TAND W1T-W2T SAID FIRST SWITCHING MEANS BEING RESPONSIVE TO THE TONE
References Cited (Backward Citations)
US2589236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |