Apparatus for measuring the profile of a railroad tunnel

Details Apparatus for measuring the profile of a railroad tunnel Apparatus for measuring the profile of a railroad tunnel

G - Physics

01

C

343/12, 343/6, 3

G01C 5/00 (2006.01) B61K 9/00 (2006.01) G01B 21/20 (2006.01) G01C 7/06 (2006.01)

Patent

CA 1077158

Abstract of the Disclosure A mobile apparatus for measuring the profile of a railroad tunnel comprising a car mounted for mobility on the railroad track, a beam emitter and receiver instrument capable of continuously receiving a signal corresponding to the distance of the tunnel profile from the instrument, a rotatable axle supporting the instrument on the car for pivoting about an axis extending parallel to the long- itudinal track axis, and a drive arranged to pivot the instrument about the axis extending parallel to the track axis whereby the instrument may sweep the profile and continuously receive the signal.

303996

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