US PATENT SUBCLASS 324 / 173
.~.~ Including magnetic detector


Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

160  DF  ELECTRICAL SPEED MEASURING {7}
166  DF  .~ Including speed-related frequency generator {5}
173.~.~ Including magnetic detector {1}
174  DF  .~.~.~> Permanent magnet type


DEFINITION

Classification: 324/173

(under subclass 166) Subject matter in which the means for producing a speed signal included means producing a magnetic field and further means sensitive to changes in the field to produce an electrical signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

200, for magnetic detectors and systems therefor.

SEE OR SEARCH CLASS

73, Measuring and Testing,

519.01, for a speed measuring device using a magnetic drag cup.

310, Electrical Generator or Motor Structure, 40+, for rotary dynamoelectric generator structure.

322, Electricity: Single Generator Systems, appropriate subclasses for single dynamoelectric generator systems.