Patent US3270690A successfully refreshed from Google Patents.
US3270690A
Expired / Lapsed
US
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Railway track grading apparatus
Assignee: JACKSON VIBRATORS Inc
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Filing: 1962-06-04
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Granted: 1966-09-06
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Expires: 1982-06-04
Abstract
No abstract record available.
Inventors
- 👤 Charles J Derler
- 👤 Merlin J Applegate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:48
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B2203/00; E01B2203/10; E01B2203/12; E01B2203/14; E01B2203/145; E01B2203/148; E01B2203/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A CONTROL SYSTEM FOR A RAILROAD BALLAST TAMPER HAVING JACKS AND RAIL HOOKS FOR SHIFTING THE POSITION OF THE TRACK, THE COMBINATION COMPRISING, A FIRST CARRIAGE HAVING A LIGHT SOURCE VISIBLE AT SAID TAMPER, A LIGHT SENSOR COUPLED TO SAID TAMPER AND MOUNTED TO BE HELD AT A PREDETERMINED DIMENSION FROM SAID TRACK, A BAFFLE SUPPORTED ON SAID TAMPER BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSOR, SAID BAFFLE HAVING A SLOT DISPOSED TRANSVERSELY TO SAID DIMENSION AND BEING MOUNTED RELATIVE TO SAID TRACK SO THAT SAID SLOT MOVES PARALLEL TO SAID DIMENSION AS THE JACKS SHIFT THE TRACK, SAID SENSOR INCLUDING A PLURALITY OF LIGHT RESPONSIVE CELLS DISPOSED PARALLEL TO SAID DIMENSION AND FACING SAID LIGHT SOURCE, AND A CIRCUIT COUPLING SAID CELLS SO THAT A CIRCUIT OUTPUT IS OBTAINED WHOSE DIRECTION AND MAGNITUDE IS DETERMINED BY WHERE THE LIGHT PASSING THROUGH SAID SLOT FROM SAID SOURCE STRIKES SAID SENSOR.
Claim 2
Dependent Claim
152 words
IN A CONTROL SYSTEM FOR A RAILROAD BALLAST TAMPER HAVING JACKS AND RAIL HOOKS FOR SHIFTING THE POSITION OF THE TRACK, THE COMBINATION COMPRISING, A FIRST CARRIAGE HAVING A LIGHT SOURCE VISIBLE AT SAID TAMPER, A LIGHT SENSOR COUPLED TO SAID TAMPER AND MOUNTED TO BE HELD AT A PREDETERMINED DIMENSION FROM SAID TRACK, A BAFFLE SUPPORTED ON SAID TAMPER BETWEEN SAID LIGHT SOURCE AND SAID LIGHT SENSOR, SAID BAFFLE HAVING A SLOT DISPOSED TRANSVERSELY TO SAID DIMENSION AND BEING MOUNTED RELATIVE TO SAID TRACK SO THAT SAID SLOT MOVES PARALLEL TO SAID DIMENSION AS THE JACKS SHIFT THE TRACK, SAID SENSOR INCLUDING A PLURALITY OF LIGHT RESPONSIVE CELLS DISPOSED PARALLEL TO SAID DIMENSION AND FACING SAID LIGHT SOURCE, AND A CIRCUIT COUPLING SAID CELLS SO THAT A CIRCUIT OUTPUT IS OBTAINED WHOSE DIRECTION AND MAGNITUDE IS DETERMINED BY WHERE THE LIGHT PASSING THROUGH SAID SLOT FROM SAID SOURCE STRIKES SAID SENSOR.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |