Patent US3817225A successfully refreshed from Google Patents.
US3401642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic jacking, levelling and lining railroad track tampers
Assignee: Individual
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Filing: 1966-11-04
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Granted: 1968-09-17
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Expires: 1986-11-04
Abstract
No abstract record available.
Inventors
- 👤 Earl H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:48
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B2203/00; E01B2203/10; E01B2203/12; E01B2203/14; E01B2203/141; E01B2203/145; E01B2203/146; E01B2203/148
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
AN AUTOMATIC TAMPER MACHINE MOVABLE ON RAILROAD TRACKS FOR JACKING, LEVELLING AND LINING OF THE RAILROAD TRACKS COMPRISING A MAIN WHEEL SUPPORTED FRAME RUNNING ON RAILROAD TRACKS, SENSING DEVICES FOR INDIVIDUALLY SENSING THE LONGITUDINAL, CROSS LEVEL AND LINING OF THE SEPARATE RAILS OF THE RAILROAD TRACK MEANS TO MAINTAIN A REFERENCE DATUM IN THE SAID SENSING DEVICES TRANSVERSELY OF THE SAID FRAME FOR INDIVIDUALLY SENSING THE LONGITUDINAL AND CROSS LEVEL AND THE LINING OF THE SEPARATE RAILS OF THE RAILROAD TRACK, CONTROL MECHANISMS ASSOCIATED WITH EACH OF THE SAID SENSING DEVICES, THE SAID CONTROL MECHANISM EACH ADAPTED TO COLLECT AND TRANSMIT DATA INDICATIVE OF THE OUT OF POSITION CONDITION OF THE SEPARATE RAILS OF THE RAILROAD TRACKS, SEPARATE MEANS TO ADJUST THE RAILROAD TRACK TO A CORRECTED POSITION OF LONGITUDINAL AND CROSS LEVEL AND LINING IN AGREEMENT WITH THE DATA TRANSMITTED BY THE SAID CONTROL MECHANISM, RAILROAD BED TAMPING DEVICES MOUNTED ON THE SAID FRAME, AND MEANS TO OPERATE THE SAID TAMPING DEVICES TO TAMP THE RAILROAD BED UNDER THE CORRECTED POSITION OF THE RAILROAD TRACKS, THE SAID LATTER MEANS BEING STARTED UP AND CUT-OUT IN RESPONSE TO DATA RECEIVED FROM THE SAID CONTROL MECHANISMS.
Claim 2
Dependent Claim
195 words
AN AUTOMATIC TAMPER MACHINE MOVABLE ON RAILROAD TRACKS FOR JACKING, LEVELLING AND LINING OF THE RAILROAD TRACKS COMPRISING A MAIN WHEEL SUPPORTED FRAME RUNNING ON RAILROAD TRACKS, SENSING DEVICES FOR INDIVIDUALLY SENSING THE LONGITUDINAL, CROSS LEVEL AND LINING OF THE SEPARATE RAILS OF THE RAILROAD TRACK MEANS TO MAINTAIN A REFERENCE DATUM IN THE SAID SENSING DEVICES TRANSVERSELY OF THE SAID FRAME FOR INDIVIDUALLY SENSING THE LONGITUDINAL AND CROSS LEVEL AND THE LINING OF THE SEPARATE RAILS OF THE RAILROAD TRACK, CONTROL MECHANISMS ASSOCIATED WITH EACH OF THE SAID SENSING DEVICES, THE SAID CONTROL MECHANISM EACH ADAPTED TO COLLECT AND TRANSMIT DATA INDICATIVE OF THE OUT OF POSITION CONDITION OF THE SEPARATE RAILS OF THE RAILROAD TRACKS, SEPARATE MEANS TO ADJUST THE RAILROAD TRACK TO A CORRECTED POSITION OF LONGITUDINAL AND CROSS LEVEL AND LINING IN AGREEMENT WITH THE DATA TRANSMITTED BY THE SAID CONTROL MECHANISM, RAILROAD BED TAMPING DEVICES MOUNTED ON THE SAID FRAME, AND MEANS TO OPERATE THE SAID TAMPING DEVICES TO TAMP THE RAILROAD BED UNDER THE CORRECTED POSITION OF THE RAILROAD TRACKS, THE SAID LATTER MEANS BEING STARTED UP AND CUT-OUT IN RESPONSE TO DATA RECEIVED FROM THE SAID CONTROL MECHANISMS.
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |