Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-12-28
1998-07-07
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 40MM, 310 67R, 310 83, 310156, F16C 1910
Patent
active
057774137
ABSTRACT:
A bearing installation for a Floppy Disk Driver motor which is simple in structure and high in accuracy of a rotating action of a rotary shaft, thus hardly impairing the read and write characteristics of a Floppy Disk Driver device. A bearing installation for a Floppy Disk Driver motor includes a protective cap mounted to one side of the motor; a first pivot bearing arranged for free and axial movements on a rotary shaft of the motor relative to the protective cap; a thrust spring urging axially the first pivot bearing on the rotary shaft of the motor; the rotary shaft fixedly mounted on a rotor of the motor, and supported pivotally at one end by the first pivot bearing and at the other end by a second pivot bearing fixedly mounted on a platform on which the motor is installed; a lead screw joined to an outwardly extending portion of the rotary shaft from the motor; and a positioning bushing arranged through which the rotary shaft fixed to the motor extends without direct contact with and closely fitted into a positioning hole provided in a plate to which the motor is secured.
REFERENCES:
patent: 1363087 (1920-12-01), Clayton
patent: 2157752 (1939-05-01), Fieistadter
patent: 3463951 (1969-08-01), Bauerle et al.
patent: 3500087 (1970-03-01), Wendt
patent: 4005493 (1977-01-01), Morgan
patent: 4792245 (1988-12-01), Fuke et al.
patent: 4885948 (1989-12-01), Thrasher, Jr. et al.
patent: 5486054 (1996-01-01), Nagata et al.
Matsushita Kunitake
Nagata Toshihiko
Sano Hiroshi
Yamawaki Takayuki
Eizo Tamai Karl I.
Minebea Co. Ltd.
Stephan Steven L.
LandOfFree
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