US3133343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for reconditioning of worn railroad rails by re-profiling the rail head
Assignee: KARL GERLACH AND HANS GERLACH
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Filing: 1962-05-11
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Granted: 1964-05-19
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Expires: 1982-05-11
Abstract
No abstract record available.
Inventors
- 👤 Kratkay Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
B; B21; B21K; B21K9/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49748; Y10T29/51; Y10T29/5116
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF RECONDITIONING A RAIL HEAD OF A WORN RAIL COMPRISING THE STEPS OF MOVING SAID RAIL LONGITUDINALLY THROUGH A ROLLER GUIDED BED, GRINDING THE EDGES OF THE RAIL HEAD TO REMOVE ITS BURRS, GRIPPING AND SUPPORTING SAID RAIL BELOW ITS RAIL HEAD, HAMMERING SAID RAIL HEAD TO REFORM ITS SURFACE INTO A PREDETERMINED PROFILE, AND TREATING SAID RAIL TO HARDEN ITS RAIL HEAD.
Claim 2
Independent Claim
65 words
A METHOD OF RECONDITIONING A RAIL HEAD OF A WORN RAIL COMPRISING THE STEPS OF MOVING SAID RAIL LONGITUDINALLY THROUGH A ROLLER GUIDED BED, GRINDING THE EDGES OF THE RAIL HEAD TO REMOVE ITS BURRS, GRIPPING AND SUPPORTING SAID RAIL BELOW ITS RAIL HEAD, HAMMERING SAID RAIL HEAD TO REFORM ITS SURFACE INTO A PREDETERMINED PROFILE, AND TREATING SAID RAIL TO HARDEN ITS RAIL HEAD.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |