Geometrical instruments – Gauge – Internal
Patent
1985-12-19
1987-12-29
Haroian, Harry N.
Geometrical instruments
Gauge
Internal
33178F, 33534, 33 1H, G01B 728
Patent
active
047151285
ABSTRACT:
Probe and method for determining the curvature of an elongated opening such as a borehole in the earth. The probe includes an axially extending flexible shaft and two pairs of sensing wires arranged in quadrature about the shaft for axial movement relative to each other upon bending of the probe. The relative axial positions of the sensing wires on opposite sides of the flexible shaft are monitored to determine the curvature of the borehole.
REFERENCES:
patent: 3821856 (1974-07-01), Rapp
patent: 3991745 (1976-11-01), Yoslow et al.
patent: 4570354 (1986-02-01), Hindes
Cummings Richard E.
Dickinson Robert W.
Dickinson, III Ben W. O.
Larsen Merle D.
Mackey Charles S.
Dickinson Robert Wayne
Dickinson III Ben Wade Oakes
Haroian Harry N.
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