Spindle drive system

Details Spindle drive system Spindle drive system

1978-01-27

1980-04-08

Smith, Jr., David

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318313, 318254, 310 67R, H02P 728

Patent

active

041974891

ABSTRACT:
A floppy disk drive system employs an inside-out DC motor whose centrally located stator is mounted directly to the chassis. The motor has a tubular rotor that encircles the stator and it is supported co-axially with the stator by the rotary disk drive spindle. A timing and commutation disk is mounted directly on the rotor and, together with speed control and commutation networks, maintains uniform motor speed.

REFERENCES:
patent: 2829287 (1958-04-01), Font
patent: 3231807 (1966-01-01), Willis
patent: 3367407 (1968-01-01), Hill
patent: 3418550 (1968-12-01), Kolatorwicz et al.
patent: 3581173 (1971-05-01), Hood
patent: 3708681 (1973-01-01), Ivers
patent: 3743906 (1973-07-01), Torok
patent: 3805134 (1974-04-01), Osamu et al.
patent: 3863118 (1975-01-01), Lander et al.
patent: 3919572 (1975-11-01), Desy
patent: 4042863 (1977-08-01), von der Heide

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