Bearings – Rotary bearing – Fluid bearing
Reexamination Certificate
2008-07-15
2008-07-15
Hannon, Thomas R (Department: 3682)
Bearings
Rotary bearing
Fluid bearing
C310S090000
Reexamination Certificate
active
11271745
ABSTRACT:
A spindle motor (50) is composed of a base (8), a sleeve (4) in cylindrical shape that is fixed on the base (8), a shaft section (1) inserted into a through hole (4b) of the sleeve (4) that is rotatable with respect to the base (8), a hub (7) that rotates together with the shaft section (1), a radial dynamic pressure bearing section (RB) formed between a bushing (13) and the sleeve (4), a flange section (4a) that protrudes in a radial direction on an outer circumferential section of the sleeve (4), a wall section (7a) in annular shape that protrudes with surrounding the sleeve (4), a thrust ring (3) that is fixed on an inner circumferential section of the wall section (7a) being adjacent to the flange section (4a) and the bushing (13) in an axial direction, and a seal plate (17fixed on an outer circumferential section of the sleeve (4) with sandwiching the thrust ring (3) between the flange section (4a) of the sleeve (4) and the seal plate (17) in an axial direction. The spindle motor (50) is furnished with a first thrust dynamic pressure bearing section (SB1), which is formed between confronting surfaces (3a, 4a1) of the thrust ring (3) and the flange section (4a), and a second thrust dynamic pressure bearing section (SB2), which is formed between confronting surfaces (3b, 17a) of the thrust ring (3) and the seal plate (17).
REFERENCES:
patent: 7133250 (2006-11-01), Herndon et al.
patent: 7134792 (2006-11-01), Aiello et al.
patent: 7265469 (2007-09-01), Kodama
patent: 2001-65552 (2001-03-01), None
patent: 2003-158861 (2003-05-01), None
patent: 2003-180066 (2003-06-01), None
LandOfFree
Spindle motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spindle motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spindle motor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3949440