Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive
Patent
1978-05-04
1979-08-21
Phillips, Charles E.
Geometrical instruments
Indicator of direction of force traversing natural media
Level or plumb, terrestrial gravitation responsive
G01C 934
Patent
active
041648170
ABSTRACT:
A conduit bending level comprising a body of molded resilient material which includes a plurality of progressively tapering coaxially stepped frustoconical body portions each having an outer surface adapted to be received by force-fit into the open end of a conduit of corresponding nominal inside diameter. A spirit level is carried centrally of the body at the wide end thereof perpendicularly of the body axis for indicating orientation of the conduit end during a conduit bending operation.
REFERENCES:
patent: 2723126 (1955-11-01), Spluvak
patent: 2746163 (1956-05-01), Moritz
patent: 3419966 (1969-01-01), Rowe
patent: 3822481 (1974-07-01), Doan
JDS Products Inc.
Phillips Charles E.
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