US PATENT SUBCLASS 474 / 211
.~.~.~ Ball-and-socket connection

Current as of: June, 1999
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474 /   HD   ENDLESS BELT POWER TRANSMISSION SYSTEMS OR COMPONENTS

202  DF  POSITIVE DRIVE BELT {3}
206  DF  .~ Belt formed of rigid links {9}
210  DF  .~.~ Links pivotable about diverse axes during operation (e.g., "universal" connection facilitating alignment with sprockets in diverse planes) {1}
211.~.~.~ Ball-and-socket connection

DEFINITION

Classification: 474/211

Ball-and-socket connection:

(under subclass 210) Subject matter wherein a component is provided with a part having a spherical or hemispherical surface received in a correspondingly shaped recess in an adjacent component to permit relative movement through nonparallel planes.