Demagnetizing apparatus and method

Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...

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361151, H01F 1300

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active

044700946

ABSTRACT:
A machine having a conveyor for carrying a workpiece to be magnetized therethrough. It includes two demagnetizing magnets arranged at a mutual angle of 90.degree. and both at 45.degree. to the direction of travel on the conveyor. The magnets are arranged respectively above and below the conveyor, and hence above and below the workpiece on the conveyor, and are spaced apart in the direction of travel of the conveyor. The conveyor, structurally, includes a stationary base, and endless belts carrying paddles, the paddles engaging the workpieces and moving them along the base. The workpieces "float, " capable of moving to any position according to the condition of magnetism in them and the position and shape of the demagnetizing magnets, and upon encountering the field of the demagnetizing magnet that is disposed above the workpieces, the workpieces are capable of being attracted up to that demagnetizing magnet, off of the base of the conveyor.

REFERENCES:
patent: 3421053 (1969-01-01), Rinard
patent: 3461353 (1969-08-01), Thorson
patent: 3506884 (1970-04-01), McKinley
patent: 3727075 (1973-04-01), Buckley
patent: 3938011 (1976-02-01), Littwin
patent: 4053849 (1977-10-01), Bower
patent: 4269298 (1981-05-01), Mergl
W. F. Bower, "Demagnetizing Parts . . . ," Electrical World, Feb. 2, 1946.

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