US3137018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brushes for track and right of way
Assignee: Nordberg Manufacturing Co
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Filing: 1962-05-29
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Granted: 1964-06-16
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Expires: 1982-05-29
Abstract
No abstract record available.
Inventors
- 👤 Edward T Seffker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:28
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/02; E01B27/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A SWEEPER FOR USE ON A RAILROAD TRACK AND THE LIKE, A VEHICLE ADAPTED TO MOVE ALONG THE TRACK, A ROTATABLE IMPELLER ON THE VEHICLE SPANNING THE RAILS AND CONSTRUCTED TO SWEEP BALLAST FORWARDLY OF THE VEHICLE BETWEEN THE TIE ENDS, SAID IMPELLER INCLUDING A PLURALITY OF PERIPHERALLY SPACED, RADIALLY EXTENDING FLEXIBLE SWEEPING MEANS ADAPTED TO PERFORM A SWEEPING OPERATION, AND A PLURALITY OF RADIALLY DISPERSED FLEXIBLE PADDLES PIVOTALLY ATTACHED TO THE IMPELLER, SAID PADDLES EXTENDING AXIALLY FROM THE IMPELLER TO A POINT OUTSIDE THE EDGE OF THE FLEXIBLE SWEEPING MEANS ADJACENT THE RAILS.
Claim 2
Dependent Claim
95 words
IN A SWEEPER FOR USE ON A RAILROAD TRACK AND THE LIKE, A VEHICLE ADAPTED TO MOVE ALONG THE TRACK, A ROTATABLE IMPELLER ON THE VEHICLE SPANNING THE RAILS AND CONSTRUCTED TO SWEEP BALLAST FORWARDLY OF THE VEHICLE BETWEEN THE TIE ENDS, SAID IMPELLER INCLUDING A PLURALITY OF PERIPHERALLY SPACED, RADIALLY EXTENDING FLEXIBLE SWEEPING MEANS ADAPTED TO PERFORM A SWEEPING OPERATION, AND A PLURALITY OF RADIALLY DISPERSED FLEXIBLE PADDLES PIVOTALLY ATTACHED TO THE IMPELLER, SAID PADDLES EXTENDING AXIALLY FROM THE IMPELLER TO A POINT OUTSIDE THE EDGE OF THE FLEXIBLE SWEEPING MEANS ADJACENT THE RAILS.
References Cited (Backward Citations)
US2748720A
Cited
US2929084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |