Optics: measuring and testing – Shape or surface configuration
Reexamination Certificate
2005-05-24
2005-05-24
Rosenberger, Richard A. (Department: 2877)
Optics: measuring and testing
Shape or surface configuration
C037S382000, C414S699000
Reexamination Certificate
active
06897967
ABSTRACT:
Railroad beds require regrading in order to permit for an increased axial load. There are often cables or tubes embedded in the roadbed at the roadbed sides, making regrading difficult. In accordance with the present invention, material is moved by suction to form pits at each side of the track at intervals along the railroad bed, and a laser camera is used to obtain information relating to the profile adjacent to the pits and the positions of the embedded cables or tubes. This information is saved, and used to control a device for mechanically excavating material from the railroad bed sides without damaging the embedded cables or tubes and grading the railroad bed. A laser measuring device is provided for reading the railroad bed profile.
REFERENCES:
patent: 5301548 (1994-04-01), Theurer
patent: 6014815 (2000-01-01), Jager
patent: 6736216 (2004-05-01), Savard et al.
patent: 2268529 (1994-01-01), None
patent: 2328576 (1999-02-01), None
Barth Vincent P.
Railcare AB
Rosenberger Richard A.
Stone Mark P.
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