High speed magnetic coupling

A magnetic coupling for coupling rotational motion through a sealed wall comprising rotatable driving means on one side of the sealed wall;

• first samarium-cobalt magnetic means;
• first means for mounting said first samarium-cobalt magnetic means on said driving means and for maintaining the same under centrifugal compression upon rotation of said driving means;
• rotatable driven means axially aligned with said driving means on the opposite side of the sealed wall;
• second samarium-cobalt magnetic means;
• and second means for mounting said second samarium-cobalt magnetic means on said driven means in magnetic coupling relation with said first samarium-cobalt magnetic means, and for maintaining said second samarium-cobalt magnetic means under centrifugal compression upon rotation of said driven means.

A magnetic coupling for coupling rotational motion through a sealed wall comprising a rotatable driving shaft on one side of the wall;

• first samarium-cobalt magnetic means;
• an axial first sleeve having one end received over one end of said driving shaft and radially containing said first samarium-cobalt magnetic means under centrifugal compression during rotation;
• connecting means for connecting said first sleeve to said driving shaft to allow relative radial movement therebetween;
• a rotatable driven shaft on the other side of said wall;
• second samarium-cobalt magnetic means;
• and a second axial sleeve secured to said driven shaft and radially containing said second samarium-cobalt magnetic means under centrifugal compression during rotation, said first sleeve and first magnetic means being concentrically disposed with respect to said second sleeve and second magnetic means.

A method of magnetically coupling rotational motion through a sealed wall comprising the steps of providing a rotatable driving shaft on one side of the wall;

• radially containing first samarium-cobalt magnetic means within a first axial sleeve and maintaining said first magnetic means under centrifugal compression upon rotation;
• mounting said first sleeve on said first shaft to allow substantially uniform radial expansion along the axial length of said first sleeve;
• providing a rotatable driven shaft on the opposite side of the wall axially aligned with said driving shaft;
• radially containing second samarium-cobalt magnetic means within a second axial sleeve and maintaining said second magnetic means under centrifugal compression upon rotation;
• and mounting said second sleeve on said driven shaft disposed concentrically within said first sleeve.

A magnetic coupling for coupling rotational motion through a sealed wall comprising rotatable driving means on one side of the sealed wall;

• a first axially extending sleeve received exteriorly over one end of said driving means, said first sleeve and said driving means having formed therein a plurality of aligned radial openings;
• a plurality of circumferentially spaced pins received into said aligned openings for connecting said first sleeve to said driving means for relative radial expansion with respect thereto;
• a first plurality of axially extending magnets carried within said first sleeve circumferentially about the inner diameter thereof for maintenance of said first magnets under centrifugal compression upon rotation of said driving means and first sleeve;
• rotatable driven means axially aligned with said driving means on the opposite side of the sealed wall;
• a second axially extending sleeve rotatable with said driven means and disposed concentrically with respect to said first sleeve and first magnets;
• and a second plurality of axially extending magnets carried within said second sleeve circumferentially about the inner diameter thereof for maintenance of said second magnets under centrifugal compression upon rotation of said driven means and second sleeve.