Patent US857721A successfully refreshed from Google Patents.
Patent US3248538A successfully refreshed from Google Patents.
US3248538A
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Strained movement detection and resetting system
Assignee: SPX Technologies Inc
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Filing: 1961-10-09
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Granted: 1966-04-26
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Expires: 1981-10-09
Abstract
No abstract record available.
Inventors
- 👤 Donald R Mccauley
- 👤 Lawrence G Mannell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:23
CPC Classifications
B; B61; B61L; B61L1/00; B61L1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A SYSTEM FOR MONITORING RAILWAY CARS IN A PASSING TRAIN EACH SUBJECTABLE TO EXCESSIVE STRAINED MOVEMENTS, A STRAINED MOVEMENT DETECTOR LOCATABLE ON EACH OF SAID RAILWAYS CARS AND OPERATIVELY CONTROLLED BY AT LEAST ONE OF TWO CONDITIONS OF SUBJECTED STRAINED MOVEMENTS TO PROVIDE A DISTINCTIVE REGISTRATION THEREOF, SAID DETECTOR HAVING A MEMBER ROTATABLY POSITIONED FOR ROTATING AT LEAST PARTIALLY WHEN ACTED UPON BY FORCE CAUSED BY STRAINED MOVEMENTS OF AT LEAST A PREDETERMINED LIMIT FROM ONE POSITION TO A SECOND POSITION AND A MEANS CAPABLE OF RECEIVING AN EXTERNALLY SUPPLIED CONTROL COMMUNICATION FOR CAUSING SAID ROTATABLE MEMBER TO BE ROTATABLY URGED TO SAID ONE POSITION, AND CONTROL TRANSMITTING MEANS POSITIONED ADJACENT SAID TRACK AND OPERATIVE ONLY IN THE PRESENCE OF SAID PASSING TRAIN FOR PROVIDING SAID EXTERNAL CONTROL.
Claim 2
Dependent Claim
129 words
IN A SYSTEM FOR MONITORING RAILWAY CARS IN A PASSING TRAIN EACH SUBJECTABLE TO EXCESSIVE STRAINED MOVEMENTS, A STRAINED MOVEMENT DETECTOR LOCATABLE ON EACH OF SAID RAILWAYS CARS AND OPERATIVELY CONTROLLED BY AT LEAST ONE OF TWO CONDITIONS OF SUBJECTED STRAINED MOVEMENTS TO PROVIDE A DISTINCTIVE REGISTRATION THEREOF, SAID DETECTOR HAVING A MEMBER ROTATABLY POSITIONED FOR ROTATING AT LEAST PARTIALLY WHEN ACTED UPON BY FORCE CAUSED BY STRAINED MOVEMENTS OF AT LEAST A PREDETERMINED LIMIT FROM ONE POSITION TO A SECOND POSITION AND A MEANS CAPABLE OF RECEIVING AN EXTERNALLY SUPPLIED CONTROL COMMUNICATION FOR CAUSING SAID ROTATABLE MEMBER TO BE ROTATABLY URGED TO SAID ONE POSITION, AND CONTROL TRANSMITTING MEANS POSITIONED ADJACENT SAID TRACK AND OPERATIVE ONLY IN THE PRESENCE OF SAID PASSING TRAIN FOR PROVIDING SAID EXTERNAL CONTROL.
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 |