Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1995-03-29
1998-12-08
Snow, Walter E.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324235, 324238, 324242, G01N 2772, G01R 3312
Patent
active
058475630
ABSTRACT:
An apparatus to detect anomalies in a member, such as a conveyor belt, having reinforcing cables therein made of a magnetically permeable material. There is coil means arranged to create a magnetic field as two longitudinally spaced first and second field components at longitudinally spaced locations. There are Hall effect sensors arranged to respond to modifications in each of the first and second field components.
REFERENCES:
patent: 5036277 (1991-07-01), van der Walt
patent: 5570017 (1996-10-01), Blum
Canada Conveyor Belt Co. Ltd.
Hughes Robert B.
Snow Walter E.
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