Patent US3218452A successfully refreshed from Google Patents.
US3218452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway track switch control system
Assignee: SPX Technologies Inc
•
Filing: 1960-11-03
•
Granted: 1965-11-16
•
Expires: 1980-11-03
Abstract
No abstract record available.
Inventors
- 👤 Hughson J Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:23
CPC Classifications
B; B61; B61L; B61L11/00; B61L11/08; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A RAILWAY TRACK SWITCH CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF THE TRACK SWITCHES OF A SWITCHING AREA IN ACCORDANCE WITH THE DESIRED ROTATING OF A RAILWAY VEHICLE THROUGH SAID SWITCHING AREA COMPRISING, A SOURCE OF POWER CARRIED BY SAID RAILWAY VEHICLE, ROUTE REGISTRATION MEANS FOR REGISTERING THE DESIRED ROUTE FOR SAID VEHICLE THROUGH SAID SWITCHING AREA, FIRST TRANSFER MEANS IN ADVANCE OF SAID SWITCHING AREA FOR TRANSFERRING POWER FROM SAID VEHICLE CARRIED POWER SOURCE TO THE WAYSIDE, WAYSIDE MEANS RESPONSIVE TO THE REGISTRATION OF SAID ROUTE REGISTRATION MEANS FOR SELECTIVELY APPLYING THE POWER TRANSFERRED FROM SAID VAHICLE CARRIED POWER SOURCE TO OPERATE THE TRACK SWITCHES OF SAID SWITCHING AREA TO THEIR RESPECTIVE DESIRED POSITIONS FOR ESTABLISHING THE DESIRED ROUTE CALLED FOR BY SAID ROUTE REGISTRATION MEANS, SECOND TRANSFER MEANS DISPOSED WITHIN SAID SWITCHING AREA TO DEFINE A DETECTOR TRACK SECTION AT EACH OF SAID TRACK SWITCHES FOR TRANSFERRING POWER FROM SAID VEHICLE CARRIED POWER SOURCE TO THE WAYSIDE AS LONG AS SAID VEHICLE OCCUPIES A DETECTOR TRACK SECTION, AND PROTECTIVE MEANS EFFECTIVE AS LONG AS POWER IS BEING TRANSFERRED BY SAID SECOND TRANSFER MEANS FOR PREVENTING THE OPERATION OF THE ASSOCIATED TRACK SWITCH.
Claim 2
Dependent Claim
194 words
A RAILWAY TRACK SWITCH CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF THE TRACK SWITCHES OF A SWITCHING AREA IN ACCORDANCE WITH THE DESIRED ROTATING OF A RAILWAY VEHICLE THROUGH SAID SWITCHING AREA COMPRISING, A SOURCE OF POWER CARRIED BY SAID RAILWAY VEHICLE, ROUTE REGISTRATION MEANS FOR REGISTERING THE DESIRED ROUTE FOR SAID VEHICLE THROUGH SAID SWITCHING AREA, FIRST TRANSFER MEANS IN ADVANCE OF SAID SWITCHING AREA FOR TRANSFERRING POWER FROM SAID VEHICLE CARRIED POWER SOURCE TO THE WAYSIDE, WAYSIDE MEANS RESPONSIVE TO THE REGISTRATION OF SAID ROUTE REGISTRATION MEANS FOR SELECTIVELY APPLYING THE POWER TRANSFERRED FROM SAID VAHICLE CARRIED POWER SOURCE TO OPERATE THE TRACK SWITCHES OF SAID SWITCHING AREA TO THEIR RESPECTIVE DESIRED POSITIONS FOR ESTABLISHING THE DESIRED ROUTE CALLED FOR BY SAID ROUTE REGISTRATION MEANS, SECOND TRANSFER MEANS DISPOSED WITHIN SAID SWITCHING AREA TO DEFINE A DETECTOR TRACK SECTION AT EACH OF SAID TRACK SWITCHES FOR TRANSFERRING POWER FROM SAID VEHICLE CARRIED POWER SOURCE TO THE WAYSIDE AS LONG AS SAID VEHICLE OCCUPIES A DETECTOR TRACK SECTION, AND PROTECTIVE MEANS EFFECTIVE AS LONG AS POWER IS BEING TRANSFERRED BY SAID SECOND TRANSFER MEANS FOR PREVENTING THE OPERATION OF THE ASSOCIATED TRACK SWITCH.
References Cited (Backward Citations)
US1553763A
Cited
US1824139A
Cited
US2151709A
Cited
US2688934A
Cited
US2638513A
Cited
US2688931A
Cited
US2691093A
Cited
US2692311A
Cited
US2800579A
Cited
US2903573A
Cited
US2961206A
Cited
US2948234A
Cited
US3024357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |