Workhead positioning means
Abstract
Abstract A RAILWAY TRACK TAMPING MACHINE HAVING A FIXED TAMPING HEAD MOUNTED ON THE CHASSIS OF THE MACHINE AND A SECOND TAMPING HEAD MOUNTED ON THE CHASSIS OF THE MACHINE BEHIND THE FIXED TAMPING HEAD AND MOVABLE LONGITUDINALLY OF THE CHASSIS RELATIVE TO THE FIXED TAMPING HEAD, IS PROVIDED WITH A DETECTOR WHICH DETECTS A FIRST INDEX ON THE TRACK RELATED TO A FIRST TIE TO BE TAMPED AND INITIATES A CONTROL MEANS TO CONTROL THE FORWARD TRAVEL OF THE VEHICLE TO POSITION THE FIXED HEAD OVER THE FIRST TIE TO BE TAMPED, AND A SECOND DETECTOR WHICH DETECTS A SECOND INDEX RELATED TO A SECOND TIE TO BE TAMPED AND INITIATES A CONTROL MEANS TO ACTUATE A MOTOR ON THE VEHICLE TO MOVE THE SECOND TAMPING HEAD ON THE CHASSIS RELATIVE TO THE FIRST TAMPING HEAD TO POSITION THE SECOND TAMPING HEAD OVER THE SECOND TIE TO BE TAMPED.
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Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |