US PATENT SUBCLASS 381 / 416
.~.~.~ Inverted (e.g., within cone)

Current as of: June, 1999
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381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

150  DF  ELECTRO-ACOUSTIC AUDIO TRANSDUCER {18}
396  DF  .~ Electromagnetic (e.g., dyynamic) {8}
412  DF  .~.~ Magnetic circuit {8}
416.~.~.~ Inverted (e.g., within cone)

DEFINITION

Classification: 381/416

Inverted (e.g., within cone):

(under subclass 412) Subject matter in which the elements of the magnetic circuit (e.g., magnets and pole pieces) lie substant-ially entirely within the volume enclosed by an axially extending, e.g., conical diaphragm.

(1) Note. The diaphragm is usually conical, and thus the magnetic circuit lies within the cone, and the voice coil bobbin also projects toward the cone rather than away from the cone.