US3071082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper jack for railway track maintenance
Assignee: Nordberg Manufacturing Co
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Filing: 1961-04-11
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Granted: 1963-01-01
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Expires: 1981-04-11
Abstract
No abstract record available.
Inventors
- 👤 Talboys Doris Chisholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:47
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B2203/00; E01B2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
FOR USE WITH A TAMPER JACK FOR ELEVATING AND TAMPING THE RAILS OF A RAILROAD TRACK, A CONTROL STRUCTURE CONSTRUCTED TO BE MOUNTED ON THE TAMPER JACK AND HAVING LOWER PORTIONS ADAPTED TO ENGAGE BOTH RAILS, A CONNECTION BETWEEN THE TAMPER JACK AND THE CONTROL STRUCTURE SO THAT THE CONTROL STRUCTURE WILL FLOAT ON THE TAMPER JACK AND WILL BE MOVED THEREWITH BUT WILL BE PHYSICALLY SUPPORTED PRIMARILY BY THE RAILS, AND SENSING MEANS ON THE CONTROL STRUCTURE CONSTRUCTED TO COORDINATE THE RAILS WITH A PLANE OF REFERENCE ESTABLISHED ALONG THE TRACK ABOVE THE RAILS INCLUDING A PAIR OF POINTER LEVERS PIVOTALLY MOUNTED ON EACH SIDE OF THE CONTROL STRUCTURE, ONE ON EACH SIDE, GENERALLY ABOVE EACH RAIL, AND POINTING LATERALLY INWARDLY TOWARD EACH OTHER, AND A SCALE STRUCTURE MOUNTED GENERALLY IN THE CENTER OF THE CONTROL STRUCTURE OPPOSITE THE INNER ENDS OF THE POINTER LEVERS, THE OUTER ENDS OF THE POINTER LEVERS BEING CONSTRUCTED TO SENSE THE PLANE OF REFERENCE.
Claim 2
Dependent Claim
161 words
FOR USE WITH A TAMPER JACK FOR ELEVATING AND TAMPING THE RAILS OF A RAILROAD TRACK, A CONTROL STRUCTURE CONSTRUCTED TO BE MOUNTED ON THE TAMPER JACK AND HAVING LOWER PORTIONS ADAPTED TO ENGAGE BOTH RAILS, A CONNECTION BETWEEN THE TAMPER JACK AND THE CONTROL STRUCTURE SO THAT THE CONTROL STRUCTURE WILL FLOAT ON THE TAMPER JACK AND WILL BE MOVED THEREWITH BUT WILL BE PHYSICALLY SUPPORTED PRIMARILY BY THE RAILS, AND SENSING MEANS ON THE CONTROL STRUCTURE CONSTRUCTED TO COORDINATE THE RAILS WITH A PLANE OF REFERENCE ESTABLISHED ALONG THE TRACK ABOVE THE RAILS INCLUDING A PAIR OF POINTER LEVERS PIVOTALLY MOUNTED ON EACH SIDE OF THE CONTROL STRUCTURE, ONE ON EACH SIDE, GENERALLY ABOVE EACH RAIL, AND POINTING LATERALLY INWARDLY TOWARD EACH OTHER, AND A SCALE STRUCTURE MOUNTED GENERALLY IN THE CENTER OF THE CONTROL STRUCTURE OPPOSITE THE INNER ENDS OF THE POINTER LEVERS, THE OUTER ENDS OF THE POINTER LEVERS BEING CONSTRUCTED TO SENSE THE PLANE OF REFERENCE.
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |