US3341812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Airborne collision avoidance system
Assignee: McDonnell Aircraft Corp
•
Filing: 1964-11-09
•
Granted: 1967-09-12
•
Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Robert E Perkinson
- 👤 Fange Wilbur H Von
- 👤 Martin J Borrok
- 👤 Frank E Christofferson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:07
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
COLLISON AVOIDANCE MEANS FOR USE ON RELATIVELY MOVABLE OBJECTS COMPRISING A PLURALITY OF OBJECTS EACH OF WHICH IS PROVIDED WITH SIMILAR COLLISION AVOIDANCE MEANS, SAID COLLISON AVOIDANCE MEANS INCLUDING TRANSMITTER AND RECEIVER MEANS ON EACH OBJECT, PRECISION TIME KEEPING MEANS ON ALL COOPERATING OBJECTS INCLUDING MEANS FOR MAINTAINING SAID TIME KEEPING MEANS IN ACCURATE SYNCHRONISM, MEANS FOR ESTABLISHING REPEATING TIME PERIODS AND FOR ASSIGNING A DIFFERENT TRANSMISSION TIME IN EACH PERIOD TO EACH COOPERATING OBJECT, MEANS ON EACH OBJECT FOR PRODUCING A SIGNAL FOR TRANSMISSION TIMES INCLUDING MEANS FOR OF ITS ASSIGNED TRANSMISSION TIMES INCLUDING MEANS FOR PRODUCING A FIRST SIGNAL OF A PREDETERMINED FREQUENCY AND TIME DURATION, SAID FIRST SIGNALS COMMENCING AT A PRECISE TIME NEAR THE BEGINNING OF EACH OCCURRENCE OF THE ASSOCIATED TRANSMISSION TIMES, THE DURATION OF SAID FIRST SIGNALS BEING LONG ENOUGH SO THAT THE RECEIVING OBJECTS CAN ACCURATELY SENSE CHANGES IN THE SIGNAL FREQUENCY DUE TO RELATIVE MOVEMENTS BETWEEN THE SENDING AND RECEIVING OBJECTS, MEANS FOR PRODUCING A SECOND SIGNAL DURING EACH
Claim 2
Dependent Claim
167 words
COLLISON AVOIDANCE MEANS FOR USE ON RELATIVELY MOVABLE OBJECTS COMPRISING A PLURALITY OF OBJECTS EACH OF WHICH IS PROVIDED WITH SIMILAR COLLISION AVOIDANCE MEANS, SAID COLLISON AVOIDANCE MEANS INCLUDING TRANSMITTER AND RECEIVER MEANS ON EACH OBJECT, PRECISION TIME KEEPING MEANS ON ALL COOPERATING OBJECTS INCLUDING MEANS FOR MAINTAINING SAID TIME KEEPING MEANS IN ACCURATE SYNCHRONISM, MEANS FOR ESTABLISHING REPEATING TIME PERIODS AND FOR ASSIGNING A DIFFERENT TRANSMISSION TIME IN EACH PERIOD TO EACH COOPERATING OBJECT, MEANS ON EACH OBJECT FOR PRODUCING A SIGNAL FOR TRANSMISSION TIMES INCLUDING MEANS FOR OF ITS ASSIGNED TRANSMISSION TIMES INCLUDING MEANS FOR PRODUCING A FIRST SIGNAL OF A PREDETERMINED FREQUENCY AND TIME DURATION, SAID FIRST SIGNALS COMMENCING AT A PRECISE TIME NEAR THE BEGINNING OF EACH OCCURRENCE OF THE ASSOCIATED TRANSMISSION TIMES, THE DURATION OF SAID FIRST SIGNALS BEING LONG ENOUGH SO THAT THE RECEIVING OBJECTS CAN ACCURATELY SENSE CHANGES IN THE SIGNAL FREQUENCY DUE TO RELATIVE MOVEMENTS BETWEEN THE SENDING AND RECEIVING OBJECTS, MEANS FOR PRODUCING A SECOND SIGNAL DURING EACH
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |