US3240929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for railway trains
Assignee: SPX Technologies Inc
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Filing: 1962-09-14
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Granted: 1966-03-15
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Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 Hughson J Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/16; B61L3/22; B61L3/24; B61L3/246; B60; B60L; B60L15/00; B60L15/40; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/64; Y02T10/72
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
IN A SYSTEM FOR OPERATING A LOCOMOTIVE ON THE RIGHT OF WAY IN ACCORDANCE WITH CODED SPEED CONTROL INFORMATION COMMUNICATED FROM THE WAYSIDE TO THE LOCOMOTIVE DISTINCTIVE OF THE DESIRED RUNNING SPEED FOR SAID LOCOMOTIVE, THE COMBINATION OF, (A) MEANS ON THE LOCOMOTIVE RESPONSIVE TO SAID CODED SPEED CONTROL INFORMATION FOR REGISTERING SAID DESIRED SPEED, (B) COMPUTING MEANS RESPONSIVE TO SAID REGISTERED DESIRED SPEED FOR COMPUTING THE HORSEPOWER REQUIRED OF THE LOCOMOTIVE DRIVING UNIT TO OPERATE THE LOCOMOTIVE AT SAID DESIRED SPEED, AND, (C) MEANS FOR ADJUSTING THE ACTUAL HORSEPOWER DEVELOPED BY SAID LOCOMOTIVE DRIVING UNIT IN ACCORDANCE WITH SAID COMPUTED REQUIRED HORSEPOWER.
Claim 2
Dependent Claim
103 words
IN A SYSTEM FOR OPERATING A LOCOMOTIVE ON THE RIGHT OF WAY IN ACCORDANCE WITH CODED SPEED CONTROL INFORMATION COMMUNICATED FROM THE WAYSIDE TO THE LOCOMOTIVE DISTINCTIVE OF THE DESIRED RUNNING SPEED FOR SAID LOCOMOTIVE, THE COMBINATION OF, (A) MEANS ON THE LOCOMOTIVE RESPONSIVE TO SAID CODED SPEED CONTROL INFORMATION FOR REGISTERING SAID DESIRED SPEED, (B) COMPUTING MEANS RESPONSIVE TO SAID REGISTERED DESIRED SPEED FOR COMPUTING THE HORSEPOWER REQUIRED OF THE LOCOMOTIVE DRIVING UNIT TO OPERATE THE LOCOMOTIVE AT SAID DESIRED SPEED, AND, (C) MEANS FOR ADJUSTING THE ACTUAL HORSEPOWER DEVELOPED BY SAID LOCOMOTIVE DRIVING UNIT IN ACCORDANCE WITH SAID COMPUTED REQUIRED HORSEPOWER.
Claim 3
Dependent Claim
129 words
IN A SYSTEM FOR CONTROLLING THE RELEASE OF THE BRAKING APPARATUS ON A TRAIN, SAID BRAKING APPARATUS BEING OPERATED TO A BRAKING CONDITION WHEN SAID TRAIN IS REQUIRED TO SLOW DOWN FROM A FIRST DESIRED SPEED TO A LOWER DESIRED SPEED AND REQUIRING A PREDETERMINED TIME INTERVAL TO OPERATE FROM A BRAKING CONDITION TO A FULLY RELEASE CONDITION, THE COMBINATION OF, (A) MEANS ON THE TRAIN FOR REGISTERING THE DESIRED AND ACTUAL SPEED OF THE TRAIN, AND (B) MEANS RESPONSIVE TO THE ACTUAL AND DESIRED SPEEDS OF SAID TRAIN AND SAID PREDETERMINED TIME INTERVAL FOR COMPUTING THE ACTUAL TRAIN SPEED AT WHICH TO INITIATE A RELEASING OF SAID BRAKING APPARATUS IN ORDER THAT SAID BRAKING APPARATUS WILL BE IN SAID FULLY RELEASES CONDITION AT SUBSTANTIALLY SAID LOWER DESIRED SPEED.
Claim 4
Dependent Claim
129 words
IN A SYSTEM FOR CONTROLLING THE RELEASE OF THE BRAKING APPARATUS ON A TRAIN, SAID BRAKING APPARATUS BEING OPERATED TO A BRAKING CONDITION WHEN SAID TRAIN IS REQUIRED TO SLOW DOWN FROM A FIRST DESIRED SPEED TO A LOWER DESIRED SPEED AND REQUIRING A PREDETERMINED TIME INTERVAL TO OPERATE FROM A BRAKING CONDITION TO A FULLY RELEASE CONDITION, THE COMBINATION OF, (A) MEANS ON THE TRAIN FOR REGISTERING THE DESIRED AND ACTUAL SPEED OF THE TRAIN, AND (B) MEANS RESPONSIVE TO THE ACTUAL AND DESIRED SPEEDS OF SAID TRAIN AND SAID PREDETERMINED TIME INTERVAL FOR COMPUTING THE ACTUAL TRAIN SPEED AT WHICH TO INITIATE A RELEASING OF SAID BRAKING APPARATUS IN ORDER THAT SAID BRAKING APPARATUS WILL BE IN SAID FULLY RELEASES CONDITION AT SUBSTANTIALLY SAID LOWER DESIRED SPEED.
Claim 5
Dependent Claim
18 words
IN A CONTROL SYSTEM FOR A RAILWAY TRAIN CONSISTING OF A LOCOMOTIVE AND CONNECTED RAILWAY CARS, SAID LOCOMOTIVE
Claim 6
Dependent Claim
18 words
IN A CONTROL SYSTEM FOR A RAILWAY TRAIN CONSISTING OF A LOCOMOTIVE AND CONNECTED RAILWAY CARS, SAID LOCOMOTIVE
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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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |