US PATENT SUBCLASS 369 / 221
.~.~.~ With additional drive (e.g., scanning, restoring, or return)

Current as of: June, 1999
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369 /   HD   DYNAMIC INFORMATION STORAGE OR RETRIEVAL

176  DF  DYNAMIC MECHANISM SUBSYSTEM {8}
215  DF  .~ Having power driven transducer assembly {6}
219  DF  .~.~ With drive transverse to storage track during storage or retrieval {4}
221.~.~.~ With additional drive (e.g., scanning, restoring, or return)

DEFINITION

Classification: 369/221

With additional drive (e.g., scanning, restoring, or return):

(under subclass 219) Subject matter having a second source of driving force which produces a different rate or direction of motion and is selectively applied to the transducer support.