US4074468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the continuous on-track truing of railway rails
Assignee: Individual
•
Filing: 1975-07-14
•
Granted: 1978-02-21
•
Expires: 1995-07-14
Abstract
Abstract Apparatus for the continuous on-track truing of railway rails comprising a plurality of rail following elements at least some of which are adapted to abrade or grind a rail. The elements are divided into at least two independently movable groups and such movement is controlled so that the rail contacting zones of the respective groups remain parallel. The force which the respective groups exert on the rail to be trued is proportioned.
Inventors
- 👤 Romolo Panetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:15
CPC Classifications
E; E01; E01B; E01B31/00; E01B31/02; E01B31/12; E01B31/17
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
165 words
Apparatus for the continuous on-track alignment of railway rails, said apparatus comprising a plurality of contact elements constituting points of support of the apparatus on the rail, means dividing the contact elements into three longitudinally aligned groups capable of each moving by itself and parallel to one another, means associated with said groups for causing the same to exert predetermined pressure on the rail which is to be aligned, the contact elements in at least the first of said groups being fixedly arranged therein on a common support and means hingably connecting said groups together so that they are constrained to move parallel to one another, the first group having two contact elements which are abrasive grinding elements, the third group having two contact elements which are abrasive grinding elements, the second group being interposed between the other two groups of abrasive elements and having two contact elements so that between the two abrasive elements of the two groups there is always one contact element.
Claim 2
Dependent Claim
165 words
Apparatus for the continuous on-track alignment of railway rails, said apparatus comprising a plurality of contact elements constituting points of support of the apparatus on the rail, means dividing the contact elements into three longitudinally aligned groups capable of each moving by itself and parallel to one another, means associated with said groups for causing the same to exert predetermined pressure on the rail which is to be aligned, the contact elements in at least the first of said groups being fixedly arranged therein on a common support and means hingably connecting said groups together so that they are constrained to move parallel to one another, the first group having two contact elements which are abrasive grinding elements, the third group having two contact elements which are abrasive grinding elements, the second group being interposed between the other two groups of abrasive elements and having two contact elements so that between the two abrasive elements of the two groups there is always one contact element.
Claim 3
Dependent Claim
17 words
Apparatus as claimed in claim 1 the contact elements of the second group constitute only bearing points.
References Cited (Backward Citations)
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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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |