Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1985-03-11
1986-05-20
Haroian, Harry N.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
33343, G01C 900
Patent
active
045892130
ABSTRACT:
A conduit bending level device to be attached to the front end of a conduit to maintain the vertical plane of the conduit through a series of bends including a spring yoke to slide and hold over the end of the conduit on the top with a slot to allow marking of the position, a level vial held away from the end of the conduit and a pivoting horizontal hinge to allow the vial to be moved upwardly or downwardly in a vertical direction.
REFERENCES:
patent: 2531563 (1950-11-01), Feldheim
patent: 2541641 (1951-02-01), Dodson
patent: 4394799 (1983-07-01), Moree et al.
patent: 4457078 (1984-07-01), Suchy
Haroian Harry N.
Lennox Thomas A.
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