US PATENT SUBCLASS 369 / 165
.~.~.~.~ Perpendicular mechanical modulation

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

99  DF  SPECIFIC DETAIL OF INFORMATION HANDLING PORTION OF SYSTEM {4}
127  DF  .~ Mechanical modification or sensing of storage medium {6}
155  DF  .~.~ Mechanical conversion to or from sound {4}
160  DF  .~.~.~ Sound box {6}
165.~.~.~.~ Perpendicular mechanical modulation {3}
166  DF  .~.~.~.~.~> Recording
167  DF  .~.~.~.~.~> With mechanical amplification (e.g., frictional coupling)
168  DF  .~.~.~.~.~> Floating weight

DEFINITION

Classification: 369/165

Perpendicular mechanical modulation:

(under subclass 160) Subject matter wherein the sound box causes or is responsive to stylus vibration in a plane normal to the surface of the storage medium.