Patent US4031625A successfully refreshed from Google Patents.
US4031625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reference system for a track working machine
Assignee: Franz Plasser Bahnbaumaschinen Industrie GmbH
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Filing: 1975-12-22
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Granted: 1977-06-28
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Expires: 1995-12-22
Abstract
Abstract A reference system for a track leveling and/or lining tamper comprises a reference wire or cord whose end and measuring points are held on bogies connected to the machine and laterally pressed against a selected track rail. A clamping mechanism is associated with the reference wire or cord and is fixedly connected to one or more of the bogies for selectively reducing and increasing the effective measuring length of the reference wire or cord between the end points thereof.
Inventors
- 👤 Josef Theurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:30
CPC Classifications
E; E01; E01B; E01B27/00; E01B27/12; E01B27/13; E01B27/16; E01B27/17; E01B35/00; E01B2203/00; E01B2203/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
In a reference system for a track working machine mounted for mobility on the rails of a track, which reference system comprises an elongated flexible reference line having two end points and two intermediate measuring points, one of the intermediate measuring points being located in a corrected track section and another one of the intermediate measuring points being located in a track section to be corrected, bogies connected to the machine at each one of the reference line points, the two end point bogies each including means for securing the associated end point of the reference line thereto, and each of the two intermediate bogies including means to sense the position of the associated measuring point of the reference line with respect to the bogie, and drives holding each of the bogies under lateral pressure against a selected one of the track rails: the improvement of two clamping mechanisms associated with the reference line, each clamping mechanism being fixedly connected to a respective one of the intermediate bogies at the intermediate reference line points for selectively reducing and increasing the effective measuring length of the reference line between the end points thereof.
Claim 2
Dependent Claim
192 words
In a reference system for a track working machine mounted for mobility on the rails of a track, which reference system comprises an elongated flexible reference line having two end points and two intermediate measuring points, one of the intermediate measuring points being located in a corrected track section and another one of the intermediate measuring points being located in a track section to be corrected, bogies connected to the machine at each one of the reference line points, the two end point bogies each including means for securing the associated end point of the reference line thereto, and each of the two intermediate bogies including means to sense the position of the associated measuring point of the reference line with respect to the bogie, and drives holding each of the bogies under lateral pressure against a selected one of the track rails: the improvement of two clamping mechanisms associated with the reference line, each clamping mechanism being fixedly connected to a respective one of the intermediate bogies at the intermediate reference line points for selectively reducing and increasing the effective measuring length of the reference line between the end points thereof.
Claim 3
Dependent Claim
13 words
The reference system of claim 1, wherein the drives are remote-controlled hydraulic motors.
Claim 4
Dependent Claim
17 words
The reference system of claim 1, further comprising a pressure-fluid operated motor for actuating each clamping mechanism.
Claim 5
Dependent Claim
11 words
The reference system of claim 3, wherein the motor is remote-controllable.
Claim 6
Dependent Claim
61 words
The reference system of claim 3, wherein each clamping mechanism comprises two bell crank levers cooperating in scissor-fashion and extending in a plane perpendicular to the track and transverse thereto, and an actuating lever arrangement linked to the bell crank levers for selectively moving the levers together and apart, the motor being connected to the lever arrangement for actuating movement thereof.
Claim 7
Dependent Claim
30 words
The reference system of claim 5, further comprising means at one of the ends of the bell crank clamping levers for holding the reference line at a predetermined vertical position.
Claim 8
Dependent Claim
29 words
The reference system of claim 6, further comprising means for vertically adjustably fixing the reference line holding means on the one end of one of the bell crank levers.
References Cited (Backward Citations)
US3165073A
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US2962979A
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GB1005190A
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GB1204134A
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US3463095A
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US3547037A
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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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |