Back to results
US 6,549,368 B1Granted
Segmented plate hub hold down system for recording medium
AssigneeIomega Corporation
InventorFrederick Jeffers
Life of this patent
Estimating the term…
Abstract
A magnetic hubbing assembly for engaging and rotating the hub of a removable recording medium has a segmented hub and a hubbing magnet including four or more poles. The hubbing magnet is ring-shaped and the hub is a high permeability SiFe metal. Segments of the hub are equal in number to the number of poles of the magnet.
Claims8
A magnetic hubbing assembly for engaging and rotating a removable recording medium comprising:
- a spindle motor having a hub engaging member;
- and
- a disk hub disposed proximate a center of the removable recording medium and securely coupled thereto,
- one of said member and said hub having magnets with four or more poles, said magnets being arranged by south polarization to south polarization and north polarization to north polarization of adjacent magnets;
- the other of said member and said hub having segments which are separated one from the other by air with a pattern which matches the pattern of the poles of said magnets, the number of said segments being equal to the number of poles of said magnets.
2 more elements
A magnetic hubbing assembly for engaging and rotating a removable recording medium comprising:
- a spindle motor having a hub engaging member, said hub engaging member being a multiple pole magnet with four or more poles, said magnets being arranged by south polarization to south polarization and north polarization to north polarization of adjacent magnets;
- a disk hub disposed proximate a center of said removable recording medium and securely coupled thereto, said hub having segments which are separated one from the other by air with a pattern which matches the pattern of the poles of said magnets, the number of said segments being equal to the number of said poles of said magnets.
Dependencies are inferred from the claim text.