Track maintenance machine and method for levelling a track
US11613852B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2018 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Nov 10, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01B35/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a mobile device for correction of a vertical position of a pre-measured track, in particular for a track maintenance machine, including a measuring system which comprises a moving chord as reference base, and including a lifting device for lifting the track to a target level prescribed at a work location by means of the moving chord. In this, the moving chord is defined at two reference locations as to its position relative to a non-corrected area of the track, wherein the work location is arranged behind the reference locations in a working direction. In this manner, the position of the moving chord is defined unambiguously and precisely at all times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.