Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1992-02-10
1992-08-25
Haroian, Harry N.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33334, G01C 910
Patent
active
051407531
ABSTRACT:
Apparatus for sensing the deviation of an underground storage tank from level which is conveniently referred to as a tank inclinometer. The apparatus, or inclinometer, includes an elongate member having a feeler bar mounted to the end thereof which is aligned with the elongate members for insertion through the restricted opening of the fill neck of an underground storage tank and then pivoted to a position such that, when the elongate members are pulled upwardly, the feeler bar contacts the inside top surface of the underground storage tank. Deviations of the top surface of the tank from level are sensed and an output provided by which the deviation is observed by the operator.
REFERENCES:
patent: 3492739 (1970-02-01), Boyce
patent: 4434558 (1984-03-01), Face et al.
Haroian Harry N.
Tanknology Corporation International
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