Ball bearing and head positioning apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 6, 1993
Grant Date -
N/A
app pub date -
Nov 15, 1991
filing date -
Nov 15, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ball bearing assembly includes a ball retainer for retaining within a predetermined area each of the balls positioned between an inner race and an outer race, the retainer having grease feeding holes which extend toward the balls. Grease is fed only to those balls which actually need lubrication, and no remaining grease flows into a gap between the inner race or the outer race and the ball retainer, therefore frictional force does not increase. In the preferred embodiment, the ball bearing assembly is used to support a head and carriage assembly of a data storage disk apparatus.
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