US3251990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle detection and control system
Assignee: SPX Technologies Inc
•
Filing: 1961-12-28
•
Granted: 1966-05-17
•
Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Luhrs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:04
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/16; B61L3/22; B61L3/225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF THE DOORS OF A VEHICLE DEPENDENT UPON THE STOPPING POSITION OF THE VEHICLE RELATIVE TO A DESIRED STOPPING LOCATION HAVING PREDETERMINED LIMITS COMPRISING, WAYSIDE TRANSMITTING MEANS FOR TRANSMITTING ENERGY ACROSS THE PATH OF SAID VEHICLE AT THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION, WAYSIDE RECEIVING MEANS AT THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION EFFECTIVE TO RECEIVE SAID TRANSMITTED ENERGY WHEN REFLEDCTED BY SAID VEHICLE, WAYSIDE REGISTERING MEANS RESPONSIVE TO THE CONDITION OF SAID RECEIVING MEANS FOR REGISTERING WHETHER OR NOT SAID VEHICLE HAS STOPPED WITHIN THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION, AND COMMUNICTION MEANS PARTLY ON THE WAYSIDE AND PARTLY ON THE VEHICLE RESPONSIVE TO THE REGISTRATION OF SAID WAYSIDE REGISTERING MEANS FOR COMMUNICATING A DOOR OPENING CONTROL TO THE VEHICLE ONLY WHEN SAID VEHICLE HAS PROPERLY STOPPED WITHIN THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION.
Claim 2
Dependent Claim
150 words
A CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF THE DOORS OF A VEHICLE DEPENDENT UPON THE STOPPING POSITION OF THE VEHICLE RELATIVE TO A DESIRED STOPPING LOCATION HAVING PREDETERMINED LIMITS COMPRISING, WAYSIDE TRANSMITTING MEANS FOR TRANSMITTING ENERGY ACROSS THE PATH OF SAID VEHICLE AT THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION, WAYSIDE RECEIVING MEANS AT THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION EFFECTIVE TO RECEIVE SAID TRANSMITTED ENERGY WHEN REFLEDCTED BY SAID VEHICLE, WAYSIDE REGISTERING MEANS RESPONSIVE TO THE CONDITION OF SAID RECEIVING MEANS FOR REGISTERING WHETHER OR NOT SAID VEHICLE HAS STOPPED WITHIN THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION, AND COMMUNICTION MEANS PARTLY ON THE WAYSIDE AND PARTLY ON THE VEHICLE RESPONSIVE TO THE REGISTRATION OF SAID WAYSIDE REGISTERING MEANS FOR COMMUNICATING A DOOR OPENING CONTROL TO THE VEHICLE ONLY WHEN SAID VEHICLE HAS PROPERLY STOPPED WITHIN THE PREDETERMINED LIMITS OF SAID DESIRED STOPPING LOCATION.
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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) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |