US PATENT SUBCLASS 33 / 318
.~ Gyroscopically controlled or stabilized

Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

300  DF  INDICATOR OF DIRECTION OF FORCE TRAVERSING NATURAL MEDIA {23}
318.~ Gyroscopically controlled or stabilized {5}
319  DF  .~.~> Magnetic compass
320  DF  .~.~> Geographic position indication (i.e., latitude or longitude)
321  DF  .~.~> Plural gyroscopes (e.g., reference platform, etc.) {2}
324  DF  .~.~> Gyroscopic compass {3}
328  DF  .~.~> Attitude indicator (i.e., pitch or bank) {2}

DEFINITION

Classification: 33/318

(under subclass 300) Device including a gyroscope utilized to (1) indicate direction or (2) maintain the equilibrium of a directional indicator or datum structure with respect to a reference plane (plurality of coordinates).

SEE OR SEARCH CLASS

73, Measuring and Testing,

504.02+, for a gyroscope combined with a speed responsive device.

74, Machine Element or Mechanism,

5+, for special features of gyroscope, per se, and especially subclass 5.22 as the generic place for gyroscopes combined with other structure. 114, Ships,

21.1, and 24 for gyroscopically controlled torpedo steering mechanism, subclass 122 for gyroscopic antirolling stabilizers combined with ships, and subclass 144 for gyroscopic controlled steering.

244, Aeronautics,

79, for gyroscope actuated automatic aircraft control.

318, Electricity: Motive Power Systems,

18+, for gyroscope actuated follow-up systems of electric motor control and subclass 489 for automatic motor control in response to direction.