Locator signal system for vehicle transportable signal generators
Abstract
Abstract A TRANSPORTABLE ELECTRONIC SIGNALLING EQUIPMENT CARRIED BY A VEHICLE WITH MEANS FOR ACTIVATION THROUGH MECHANICAL LINKAGE WITH THE DISTANCE MEASURING EQUIPMENT OF THE VEHICLE, AND COMPRISING A MECHANICAL SWITCHING ASSEMBLY CAUSING IT TO ADVANCE MODULATING THE RADIO FREQUENCY OF THE TRANSMITTED SIGNAL AT PREDETERMINED LOCATIONS, THE MODULATION OCCURRING IN SUCH A MANNER AS TO INDICATE UPON MULTIPLE RECEIVERS THE ONE MILE SEGMENT OF PROXIMITY SEPARATING THE TRANSMITTER AND RECEIVERS THROUGH UPWARD SHIFTS OF THE FREQUENCY OF OSCILLATION OF APPROXIMATELY ONE HUNDRED CYCLES PER SECOND, THE RECEIVERS BEING TUNED TO RECEIVE AND BE ACTIVATED BY ONLY THE DESIRED SEGMENT OF TRANSMITTER FREQUENCY OF OSCILLATION, AMPLIFIED, RELAYED TO IMITY INFORMATION OF THE VEHICULAR APPROACH.
Inventors
- 👤 William T Buckingham
- 👤 Gordon R Hammon
Bibliographic Details
Claims Analysis
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |