Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Patent
1996-06-07
1997-04-15
Evans, Jefferson
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
360 9908, 74573R, G11B 1702, F16F 1522
Patent
active
056215886
ABSTRACT:
A balanced spin motor assembly of a hard disk drive. The spin motor includes a spindle that is mounted to a base plate of the disk drive by a plurality of mounting screws that are attached to mounting holes of the spindle and base plate. At least one recording disk is attached to a hub assembly that rotates relative to the spindle. The hub assembly contains magnets that are coupled to a coil located within the motor. Energizing the coil with a current creates a torque that rotates the hub and spins the disks. The hub assembly has a plurality of equally spaced threaded apertures located at a top portion and a bottom portion of the hub. The spin motor can be balanced by attaching weight screws to the threaded apertures of the hub. Weight screws can be attached to the bottom portion of the hub through the mounting holes of the base plate and the spindle. Accessing the hub through the mounting holes allows the spin motor to be dynamically balanced while attached to the base plate of the drive.
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patent: 4784012 (1988-11-01), Marra
patent: 5130870 (1992-07-01), Jabbari
patent: 5167167 (1992-12-01), Tiernan, Jr. et al.
patent: 5422776 (1995-06-01), Thorson et al.
patent: 5460017 (1995-10-01), Taylor
patent: 5537272 (1996-07-01), Kazmierczak et al.
patent: 5555144 (1996-09-01), Wood et al.
Pham Tho
Williams Kelly
Evans Jefferson
Samsung Electronics Inc.
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