Ferrofluid-pole-piece-magnet apparatus and method of...

Details Ferrofluid-pole-piece-magnet apparatus and method of... Ferrofluid-pole-piece-magnet apparatus and method of...

F - Mech Eng,Light,Heat,Weapons

16

J

26/161, 277/49

F16J 15/40 (2006.01) F16J 15/43 (2006.01)

Patent

CA 1243053

ABSTRACT OF THE DISCLOSURE Pole-piece-magnet apparatus for use as single- or double- pole-piece ferrofluid seal apparatus and method of manufacture, which pole-piece-magnet apparatus comprises at least one washer- type metal-pole-piece element with one flat surface having a plurality of spaced-apart raised dimple elements thereon with outwardly extending anchoring surfaces; and a washer-like hard molded permanent magnet polymer ring element molded about and secured directly to the one flat surface of the pole-piece element by the anchoring surface on the raised dimples, the permanent magnet ring element having an inner diameter greater than the inner diameter of the pole-piece element and an outer diameter of about the same dimensions as the outer diameter of the pole-piece element.

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