Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1994-10-05
1996-07-30
Snow, Walter E.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
32420717, G01R 3312, G01B 730
Patent
active
055415091
ABSTRACT:
An apparatus for use in determining the thickness of the insulated coating of an electrical cable manufactured in an extrusion process having means for generating an alternating current in the cable core coupled with means for detecting the magnetic field produced by the current flow in the cable such that in combination with a measurement of the distance from the detection means to the coated cable surface, a determination of coating thickness may be made.
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patent: 4849694 (1989-07-01), Coates
patent: 5055793 (1991-10-01), Mukahey
patent: 5214376 (1993-05-01), Sikora
Beta Instrument Co. Ltd.
Phillips Roger
Snow Walter E.
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