Encapsulated magnet for magnetic drive

Details Encapsulated magnet for magnetic drive Encapsulated magnet for magnetic drive

1981-09-04

1983-11-08

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Magnet structure or material

335306, 417420, H01F 702

Patent

active

044145233

ABSTRACT:
One of the annular magnets used in a magnetic drive for pumps and other devices is enclosed on the outside in a thin metal jacket. The jacket and the interior of the magnet and preferably one end thereof are filled with a plastic material which is apertured to receive the shaft on which the magnet is to be mounted. Means is provided in the plastic material for balance weights. The jacket and plastic are impervious to fluids being pumped so that the fluids are not contaminated and the magnet is not attacked by the fluids. A preferred method of making the combination is disclosed.

REFERENCES:
patent: 3575536 (1971-04-01), Jacobs et al.
patent: 3938914 (1976-02-01), Zimmermann
patent: 4080112 (1978-03-01), Zimmermann
patent: 4111614 (1978-09-01), Martin et al.
patent: 4127365 (1978-11-01), Martin et al.

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