Double punch inclinometer

Details Double punch inclinometer Double punch inclinometer

1979-02-05

1980-04-22

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

G01C 912

Patent

active

041987608

ABSTRACT:
An inclinometer for determining the inclination of a well bore including a longitudinally extending housing adapted to be lowered into the well bore to a given depth, a marking element mounted in the upper part of the housing and being suspended from a point along the central axis of the housing, the marking element having a marking tip at the lower end located on a true vertical line from the suspension point, a rotatable chart member having a chart thereon mounted in the housing below the marking element and normally spaced from the marking tip thereon, the chart member being movable along the longitudinal axis of the housing and upwardly into engagement with the marking tip, whereby the marking tip will make a mark on the chart, mechanism mounted within the housing for moving the chart member at two spaced times into engagement with the marking tip, the chart moving mechanism including means for rotating the chart during the interval between the two times while, simultaneously, insuring that the chart member is provided with axial movement only during the two times when the chart member is moved upwardly into engagement with the marking tip.

REFERENCES:
patent: 2624952 (1953-01-01), MacLagan
patent: 3710448 (1973-01-01), Kimmel et al.
patent: 3911590 (1975-10-01), Litchfield et al.
patent: 3938255 (1976-02-01), Lichte

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