Method and apparatus for examining the interior of a bore hole a

Details Method and apparatus for examining the interior of a bore hole a Method and apparatus for examining the interior of a bore hole a

1974-04-18

1976-10-05

Griffin, Robert L.

Telegraphy

Systems

Simplex-reversing periodic

178DIG1, 33304, H04N 702

Patent

active

039846270

ABSTRACT:
An apparatus for examining the interior of a bore hole and/or caisson. The apparatus includes a gyroscope arrangement for determining true azimuth reference and slant angle and slant angle azimuth direction relative to the reference. A television camera including a lighting section is fixed relative to the gyroscope package by a cage which is adapted for slidingly engaging the interior of the bore hole and/or caisson so that the gyroscope package can make effective determinations relative to the same in order to enable establishing the location of the television camera. A remote control is provided for controlling the lowering of the cage into the bore hole and/or caisson and for controlling the television camera as well as the lighting arrangement therefor. A television monitor is employed which is connected to the camera for displaying scenes of the interior as the gyroscope and camera arrangement is lowered through the bore hole and/or caisson. A device is provided for supplying clear or clarified water into the bore hole and/or caisson to maintain a hydraulic head therein and to facilitate the examining of the interior.

REFERENCES:
patent: 2304045 (1942-12-01), Anderson
patent: 2334475 (1943-11-01), Claudet
patent: 2849530 (1958-08-01), Fleet
patent: 3168909 (1965-02-01), Zurbrigen
patent: 3753296 (1973-08-01), Van Steenwyk
patent: 3780220 (1973-12-01), Fugitt
patent: 3784740 (1974-01-01), Copland
patent: 3885091 (1975-05-01), Fish et al.

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