US PATENT SUBCLASS 60 / 403
.~ Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure 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.~ Apparatus having means responsive to or ameliorating the effects of breakage, plugging, mechanical failure or power failure {3}
404  DF  .~.~> Stand-by stored energy means activated responsive to malfunction or power failure
405  DF  .~.~> Second motive fluid supply means takes load responsive to failure of first
406  DF  .~.~> Output means locked, positioned or released on failure of motive fluid supply means

DEFINITION

Classification: 60/403

(under subclass 325) Apparatus with (1) means that reacts to a condition of the system produced by breakage, plugging, or mechanical failure of an element; or to power failure, and exerts a control that tends to lessen an undesirable effect of the malfunction or power failure; or (2) distinct, normally inactive means operable to lessen harmful effects of malfunction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

399, for a system in which unsafeness, unreadiness, or disarray prevents a manual change of the operative state of the system.

400+, for a system operable selectively by power or manual energy inputs.

459+, for a system having a safety valve relieving excessive pressure.