Coated resistance welding sensor

Details Coated resistance welding sensor Coated resistance welding sensor

1986-01-17

1988-01-26

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219110, 324117H, B23K 1124

Patent

active

047218401

ABSTRACT:
The Hall effect current sensor is dipped in a coating of magnetically saturable and electromagnetically saturable material, such as a mixture of powdered nickel in an epoxy binder. The coating has little effect on the sensor's ability to sense the magnetic field attributable to current flow in the welding transformers primary or secondary. The coating shields the Hall effect device from potentially damaging electromagnetic radiation which is produced by the welding apparatus as a by-product of the welding operation.

REFERENCES:
patent: 3194939 (1965-07-01), Hill
patent: 3240961 (1966-03-01), Noth
patent: 3562124 (1971-02-01), Leon et al.
patent: 3870987 (1975-03-01), Wiley et al.
patent: 4394619 (1983-07-01), Gschwandtner
patent: 4517118 (1985-05-01), Stoetzer

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