US PATENT SUBCLASS 318 / 649
.~.~.~ Stable platforms

Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
638  DF  .~ With particular "error-detecting" means {13}
648  DF  .~.~ With inertial, direction or inclination measuring instrument {1}
649.~.~.~ Stable platforms

DEFINITION

Classification: 318/649

(under subclass 648) Subject matter in which the measuring instrument includes a stable platform.

SEE OR SEARCH THIS CLASS, SUBCLASS:

591, for multiple mode servomechanisms with mode engagement features such as the erection of gyroscopes.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

321+, for geometrical instruments which include one or more gyroscopic elements that may form a stable platform.

74, Machine Element or Mechanism, 5+, for gyroscopes, per se, and other related features.