US PATENT SUBCLASS 70 / 274
.~.~.~.~ Emergency release

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
267  DF  .~ Predetermined time interval controlled {3}
272  DF  .~.~ Clockwork control {1}
273  DF  .~.~.~ Continuously operating once initiated {1}
274.~.~.~.~ Emergency release

DEFINITION

Classification: 70/274

(under subclass 273) Devices embodying emergency releasing mechanisms in the event of failure of the clockwork control.

SEE OR SEARCH THIS CLASS, SUBCLASS:

465, for similar releasing mechanisms provided in the event of emergencies.