Patent US3248691A successfully refreshed from Google Patents.
US3248691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Object detection system
Assignee: SPX Technologies Inc
•
Filing: 1963-12-11
•
Granted: 1966-04-26
•
Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 George A Kirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:33
CPC Classifications
G; G08; G08G; G08G1/00; G08G1/01; G08G1/04; Y; Y10; Y10S; Y10S367/00; Y10S367/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A SYSTEM FOR DETECTING OBJECTS PASSING THROUGH A DETECTION ZONE DEFINED BY A BEAM OF DISCRETE ENERGY PULSES COMPRISING, TRANSMITTING MEANS FOR DIRECTING SAID BEAM TOWARD A FIXED REFLECTING SURFACE MORE DISTANT THAN SAID VEHICLES AND UPON WHICH SAID PULSES IMPINGE ONLY WHEN NO VEHICLE IS IN SAID ZONE, NORMALLY INOPERATIVE RECEIVING MEANS, AND GATING MEANS FOR CONTROLLING SAID RECEIVING MEANS TO BECOME OPERATIVE ONLY THROUGHOUT THE EXPECTED RANGE OF RECEPTION TIMES OF REFLECTION PULSES FROM SAID VEHICLES BUT NOT THROUGHOUT THE EXPECTED RANGE OF RECEPTION TIMES OF REFLECTION PULSE FROM SAID MORE DISTANT REFLECTING SURFACE, SAID GATING MEANS INCLUDING: (A) A SYNCHRONOUSLY ROTATING ELEMENT, (B) A PERMANENT MAGNET CARRIED BY SAID ROTATING ELEMENT, (C) AN INDUCTOR,
Claim 2
Dependent Claim
118 words
IN A SYSTEM FOR DETECTING OBJECTS PASSING THROUGH A DETECTION ZONE DEFINED BY A BEAM OF DISCRETE ENERGY PULSES COMPRISING, TRANSMITTING MEANS FOR DIRECTING SAID BEAM TOWARD A FIXED REFLECTING SURFACE MORE DISTANT THAN SAID VEHICLES AND UPON WHICH SAID PULSES IMPINGE ONLY WHEN NO VEHICLE IS IN SAID ZONE, NORMALLY INOPERATIVE RECEIVING MEANS, AND GATING MEANS FOR CONTROLLING SAID RECEIVING MEANS TO BECOME OPERATIVE ONLY THROUGHOUT THE EXPECTED RANGE OF RECEPTION TIMES OF REFLECTION PULSES FROM SAID VEHICLES BUT NOT THROUGHOUT THE EXPECTED RANGE OF RECEPTION TIMES OF REFLECTION PULSE FROM SAID MORE DISTANT REFLECTING SURFACE, SAID GATING MEANS INCLUDING: (A) A SYNCHRONOUSLY ROTATING ELEMENT, (B) A PERMANENT MAGNET CARRIED BY SAID ROTATING ELEMENT, (C) AN INDUCTOR,
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |