Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1991-03-14
1992-08-25
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
384107, H02K 2122, G11B 5012
Patent
active
051421747
ABSTRACT:
A disk drive motor having a low profile construction and a gas-lubricated deflecting pad support usable in the disk drive motor and elsewhere includes a cup-shaped rotor having an integral cylindrical portion extending from the base of the cup; the cylindrical extension may be a shaft or a large, hollow extension which encloses the stator windings. The stator can be conventional or can have a closed end and/or a cup-like portion to simplify construction and eliminate the need for a seal. A support mounted on the stator or the rotor supports the rotor for rotation relative to the stator. The support can be a deflecting pad support such as a deflecting pad hydrodynamic bearing or the plane or gas-lubricated deflecting pad support disclosed herein.
The gas-lubricated deflecting pad support member includes bearing pads and a support structure which supports the bearings for strictly radial movement. A contoured surface is formed on the pad surfaces, or a support surface opposing the pad surfaces, or both. Relative rotation between the pad surfaces and the support surface results in the development of a pressurized gas film between the support surface and the pad surface.
REFERENCES:
patent: 3919572 (1975-11-01), Desy
patent: 4694213 (1987-09-01), Gowda et al.
patent: 4713704 (1987-12-01), Voll et al.
patent: 4731554 (1988-03-01), Hall et al.
patent: 4734606 (1988-03-01), Hajec
patent: 4760298 (1988-07-01), Kitahara et al.
patent: 4803576 (1989-02-01), Ohkita et al.
patent: 4805972 (1989-02-01), Tanaka et al.
patent: 4814652 (1989-03-01), Wright
patent: 4818907 (1989-04-01), Shirotori
patent: 4820949 (1989-04-01), Mizobuchi et al.
patent: 4829657 (1989-05-01), Wright
patent: 4853567 (1989-08-01), Muramatsu et al.
patent: 5013947 (1991-05-01), Ide
"Gas-Lubricated Bearings", E. Bisson et al. Bearing Technology pp. 119-124, 1965.
Rebsch D.
Stephan Steven L.
LandOfFree
Low-profile disk drive motor with deflecting-pad bearings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low-profile disk drive motor with deflecting-pad bearings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-profile disk drive motor with deflecting-pad bearings will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-387194