US PATENT SUBCLASS 60 / 404
.~.~ Stand-by stored energy means activated responsive to malfunction or power failure

Current as of: June, 1999
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60 /   HD   POWER PLANTS

325  DF  PRESSURE FLUID SOURCE AND MOTOR {47}
403  DF  .~ Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure {3}
404.~.~ Stand-by stored energy means activated responsive to malfunction or power failure

DEFINITION

Classification: 60/404

(under subclass 403) Apparatus including structure holding a standby reserve of energy that is released upon sensed malfunction of the normal energy supply means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

408+, for a pneumatic system in which expansible fluid is alternately compressed into a storage reservoir and expanded from the reservoir to run a motor.

413+, for a system having structure controlling the release of stored work driving energy.