Thrust dynamic pressure bearing, spindle motor using...

Details Thrust dynamic pressure bearing, spindle motor using... Thrust dynamic pressure bearing, spindle motor using...

2005-10-31

2008-11-11

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S112000

Reexamination Certificate

active

07448805

ABSTRACT:
A thrust dynamic pressure bearing with high inclination-resistant rigidity against axis runout and additionally low bearing loss torque is implemented. Herringbone grooves (131) having intermediate bends (132) are provided on rotating-side bearing surface (11) provided on the rotating-side bearing member. When rotating-side bearing surface (11) rotates in direction A (clockwise), lubricating oil generates dynamic pressure in an area centering on intermediate bend (132) along radially outer part (133) and radially inner part (134) of herringbone groove (131). As a result that groove width (G) of a dynamic pressure generating groove and width (L) of a land adjacent to the dynamic pressure generating groove holds G>L at an arbitrary radius (2) position, a thrust dynamic pressure bearing with high inclination-resistant rigidity and additionally low bearing loss torque is provided.

REFERENCES:
patent: 5795074 (1998-08-01), Rahman et al.
patent: 2002/0122610 (2002-09-01), Shiraishi
patent: 4-105216 (1992-09-01), None
patent: 10-73127 (1998-03-01), None
patent: 2001-173645 (2001-06-01), None
patent: 2003-113837 (2003-04-01), None
patent: 2003-120660 (2003-04-01), None

Affiliated with

Also associated with

Rating

Thrust dynamic pressure bearing, spindle motor using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thrust dynamic pressure bearing, spindle motor using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thrust dynamic pressure bearing, spindle motor using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4038308