Patent US3153489A successfully refreshed from Google Patents.
US3153489A
Expired / Lapsed
US
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Ramp car
Assignee: CENTRAL OF GEORGIA RAILWAY CO
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Filing: 1962-07-10
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Granted: 1964-10-20
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Expires: 1982-07-10
Abstract
No abstract record available.
Inventors
- 👤 William H Leavengood
- 👤 Reppard D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:50
CPC Classifications
B; B61; B61D; B61D47/00; B61D47/005; B61D3/00; B61D3/16; B61D3/18; B61D3/182; B61D3/184
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
A RAMP CAR COMPRISING, A CAR FRAME MOUNTED UPON TRUCKS, SPACED PARALLEL RUNWAYS EXTENDING THE LENGTH OF THE CAR FRAME, GUIDE ROLLERS AT THE END OF EACH RUNWAY, A RAMP ASSOCIATED WITH EACH RUNWAY AT ONE END OF THE CAR AND MOVABLE OVER THE ROLLER FROM AN OPERATIVE POSITION AS A DECLINING EXTENSION OF THE RUNWAY TO THE GROUND TO A STOWED POSITION OVERLYING THE RUNWAY END, AND MEANS TO MOVE THE RAMPS TO AND FROM THE SAID POSITIONS INCLUDING AN ENDLESS CHAIN ATTACHED TO THE END OF THE RAMPS FARTHEST REMOVED FROM THE CAR END WHEN THE RAMPS ARE IN STOWED POSITION, THE CHAIN TRAVELLING OVER A DRIVE SPROCKET AND A GUIDE SPROCKET SPACED LONGITUDINALLY OF THE CAR WITH THE GUIDE SPROCKET BEING ADJACENT THE CAR END WITH WHICH THE RAMPS ARE ASSOCIATED AND THE DRIVE SPROCKET BEING INWARDLY OF THE RAMP END TO WHICH THE CHAIN IS ATTACHED WHEN THE RAMPS ARE IN STOWED POSITION, CHAIN TENSIONING MEANS BIASED TOWARD CHAIN TIGHTENING POSITION LOCATED ON EACH SIDE OF THE DRIVE SPROCKET AND MOVABLE UNDER RAMP WEIGHT TO PERMIT TILTING OF THE RAMP AND COUNTERBALANCE RAMP WEIGHT, AND MEANS TO DRIVE THE DRIVE SPROCKET.
Claim 2
Dependent Claim
195 words
A RAMP CAR COMPRISING, A CAR FRAME MOUNTED UPON TRUCKS, SPACED PARALLEL RUNWAYS EXTENDING THE LENGTH OF THE CAR FRAME, GUIDE ROLLERS AT THE END OF EACH RUNWAY, A RAMP ASSOCIATED WITH EACH RUNWAY AT ONE END OF THE CAR AND MOVABLE OVER THE ROLLER FROM AN OPERATIVE POSITION AS A DECLINING EXTENSION OF THE RUNWAY TO THE GROUND TO A STOWED POSITION OVERLYING THE RUNWAY END, AND MEANS TO MOVE THE RAMPS TO AND FROM THE SAID POSITIONS INCLUDING AN ENDLESS CHAIN ATTACHED TO THE END OF THE RAMPS FARTHEST REMOVED FROM THE CAR END WHEN THE RAMPS ARE IN STOWED POSITION, THE CHAIN TRAVELLING OVER A DRIVE SPROCKET AND A GUIDE SPROCKET SPACED LONGITUDINALLY OF THE CAR WITH THE GUIDE SPROCKET BEING ADJACENT THE CAR END WITH WHICH THE RAMPS ARE ASSOCIATED AND THE DRIVE SPROCKET BEING INWARDLY OF THE RAMP END TO WHICH THE CHAIN IS ATTACHED WHEN THE RAMPS ARE IN STOWED POSITION, CHAIN TENSIONING MEANS BIASED TOWARD CHAIN TIGHTENING POSITION LOCATED ON EACH SIDE OF THE DRIVE SPROCKET AND MOVABLE UNDER RAMP WEIGHT TO PERMIT TILTING OF THE RAMP AND COUNTERBALANCE RAMP WEIGHT, AND MEANS TO DRIVE THE DRIVE SPROCKET.
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |