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Browse Prior Art Database

Magnetic Drive Means

IP.com Disclosure Number: IPCOM000081226D
Original Publication Date: 1974-Apr-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Treseder, RC: AUTHOR

Abstract

Drive means is shown to drive disk 1 within enclosed housing 2 from an input shaft 3. An annular diaphragm 4 is provided to seal housing 3 and also to support stationary shaft 5. Stationary shaft 5 is clamped to the diaphragm 4 by a bolt 11. The shaft 5 is sealed against gas leakage by an 0-ring 10. Input shaft 3 and stationary shaft 5 are positioned so that they are approximately on the same axis.

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Magnetic Drive Means

Drive means is shown to drive disk 1 within enclosed housing 2 from an input shaft 3. An annular diaphragm 4 is provided to seal housing 3 and also to support stationary shaft 5. Stationary shaft 5 is clamped to the diaphragm 4 by a bolt 11. The shaft 5 is sealed against gas leakage by an 0-ring 10. Input shaft 3 and stationary shaft 5 are positioned so that they are approximately on the same axis.

Disk 1 is mounted for rotary motion about shaft 5 by suitable hub 6 and bearings 7. Attached to the input shaft 3 is a permanent magnet member 8 having a magnet configuration as shown in the lower figure. Attached to the lower end of hub 6 is a complementary permanent magnet member 9 positioned so that the magnetic coupling transmits from the input shaft to drive disk 1, even though the disk is in sealed housing 2.

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