US PATENT SUBCLASS 384 / 521
.~.~.~.~.~ Ball spacer

Current as of: June, 1999
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384 /   HD   BEARINGS

91  DF  ROTARY BEARING {8}
445  DF  .~ Antifriction bearing {9}
456  DF  .~.~ Radial bearing {9}
490  DF  .~.~.~ Ball bearing {17}
520  DF  .~.~.~.~ Discrete spacing member {2}
521.~.~.~.~.~ Ball spacer

DEFINITION

Classification: 384/521

Ball spacer:

(under subclass 520) Subject matter wherein the spacing element is spherical.