Radial capillary seal for fluid dynamic bearing motors

Details Radial capillary seal for fluid dynamic bearing motors Radial capillary seal for fluid dynamic bearing motors

2007-07-10

2007-07-10

Joyce, William C. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S107000

Reexamination Certificate

active

11151878

ABSTRACT:
A seal with a primary axis lying in the radial direction so that the fluid bearing is primarily extending in the axial direction between the rotating shaft and surrounding sleeve is disclosed. The capillary seal is positioned with an opening adjacent an end of the fluid bearing gap, and comprises two walls which diverge as they extend radially away from the fluid bearing so that the fluid held in the radial capillary seal is maintained adjacent an end of the gap, while the size of the reservoir defined by the diverging walls provides a large reservoir volume. The seal uses an additional capillary defined by a narrow annulus between the rotating shaft and a seal wall end. The narrow annulus establishes very high shock resistance preventing fluid loss past the outer axial wall of the radially capillary seal, and defines a small surface area from which evaporation can occur.

REFERENCES:
patent: 6126320 (2000-10-01), Ichiyama
patent: 6828709 (2004-12-01), Grantz et al.
patent: 6939046 (2005-09-01), Oelsch
patent: 2003/0190100 (2003-10-01), Grantz et al.
patent: 2004/0028301 (2004-02-01), Kull et al.
patent: 2005/0286820 (2005-12-01), Grantz et al.
patent: 2006/0023982 (2006-02-01), Uenosono et al.
patent: 10-196646 (1998-07-01), None

Affiliated with

Also associated with

Rating

Radial capillary seal for fluid dynamic bearing motors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Radial capillary seal for fluid dynamic bearing motors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial capillary seal for fluid dynamic bearing motors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3785943