US3268726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Train control system
Assignee: SPX Technologies Inc
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Filing: 1963-04-04
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Granted: 1966-08-23
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Expires: 1983-04-04
Abstract
No abstract record available.
Inventors
- 👤 William J Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/12; B61L3/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
IN A TRAIN CONTROL SYSTEM WHEREIN A PLURALITY OF CONTROLS ARE TRANSMITTED SELECTIVELY TO VEHICLE CARRIED APPARATUS TO GOVERN THE TRAIN AT SELECTED RATES OF SPEED, ONE OF SAID CONTROLS GOVERNING THE TRAIN AT A RESTRICTIVE RATE OF SPEED AND ANOTHER OF CONTROL GOVERNING THE TRAIN TO TRAVEL AT AUTHORIZED SPEED AND HAVING MEANS FOR CAUSING A PENALTY BRAKE APPLICATION IN RESPONSE TO THE RECEPTION BY THE VEHICLE CARRIED APPARATUS OF THE ONE CONTROL WHEN THE TRAIN IS TRAVELING AT A RATE OF SPEED IN EXCESS OF THE RESTRICTIVE SPEED, COMPRISING A FIRST DETECTING MEANS ON THE VEHICLE TO DETECT THE SPEED OF THE TRAIN IN EXCESS OF A FIRST PREDETERMINED RATE WHILE THE VEHICLE IS RECEIVING THE OTHER CONTROL, A SECOND DETECTING MEANS ON THE VEHICLE TO DETECT THE SPEED OF THE TRAIN ABOVE A SECOND PREDETERMINED RATE WHICH SPEED IS FASTER THAN THE FIRST PREDETERMINED RATE, A FIRST STORING MEANS ON THE VEHICLE GOVERNED BY THE FIRST DETECTING MEANS EMERGIZED IN RESPONSE TO A DETECTED SPEED OF THE VEHICLE ABOVE THE FIRST PREDETERMINED RATE IN RESPONSE TO THE CESSATION OF THE OTHER CONTROL, A SECOND STORING MEANS ON THE VEHICLE DEENERGIZED IN RESPONSE TO THE DETECTED SPEED OF THE
Claim 2
Dependent Claim
201 words
IN A TRAIN CONTROL SYSTEM WHEREIN A PLURALITY OF CONTROLS ARE TRANSMITTED SELECTIVELY TO VEHICLE CARRIED APPARATUS TO GOVERN THE TRAIN AT SELECTED RATES OF SPEED, ONE OF SAID CONTROLS GOVERNING THE TRAIN AT A RESTRICTIVE RATE OF SPEED AND ANOTHER OF CONTROL GOVERNING THE TRAIN TO TRAVEL AT AUTHORIZED SPEED AND HAVING MEANS FOR CAUSING A PENALTY BRAKE APPLICATION IN RESPONSE TO THE RECEPTION BY THE VEHICLE CARRIED APPARATUS OF THE ONE CONTROL WHEN THE TRAIN IS TRAVELING AT A RATE OF SPEED IN EXCESS OF THE RESTRICTIVE SPEED, COMPRISING A FIRST DETECTING MEANS ON THE VEHICLE TO DETECT THE SPEED OF THE TRAIN IN EXCESS OF A FIRST PREDETERMINED RATE WHILE THE VEHICLE IS RECEIVING THE OTHER CONTROL, A SECOND DETECTING MEANS ON THE VEHICLE TO DETECT THE SPEED OF THE TRAIN ABOVE A SECOND PREDETERMINED RATE WHICH SPEED IS FASTER THAN THE FIRST PREDETERMINED RATE, A FIRST STORING MEANS ON THE VEHICLE GOVERNED BY THE FIRST DETECTING MEANS EMERGIZED IN RESPONSE TO A DETECTED SPEED OF THE VEHICLE ABOVE THE FIRST PREDETERMINED RATE IN RESPONSE TO THE CESSATION OF THE OTHER CONTROL, A SECOND STORING MEANS ON THE VEHICLE DEENERGIZED IN RESPONSE TO THE DETECTED SPEED OF THE
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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |