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

1978-05-18

1979-12-18

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

33338, 356 5, 356152, G01C 308, E01B 3502

Patent

active

041792165

ABSTRACT:
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 longitudinal 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.

REFERENCES:
patent: 3168023 (1965-02-01), Harmon
patent: 3620625 (1971-11-01), Tegholm
patent: 3705772 (1972-12-01), Andreas
patent: 3869805 (1975-03-01), Dieringer
patent: 3869907 (1975-03-01), Plasser et al.
patent: 3950096 (1976-04-01), Aeschlimann et al.
patent: 4063283 (1977-12-01), Rider et al.

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