US PATENT SUBCLASS 102 / 222
.~.~ Blocking or interrupting type

Current as of: June, 1999
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102 /   HD   AMMUNITION AND EXPLOSIVES

200  DF  IGNITING DEVICES AND SYSTEMS {15}
221  DF  .~ Arming devices {2}
222.~.~ Blocking or interrupting type {7}
223  DF  .~.~.~> Fluid pressure operated {5}
231  DF  .~.~.~> Centrifugal and setback operated {3}
237  DF  .~.~.~> Centrifugal operated {3}
247  DF  .~.~.~> Inertia operated {3}
254  DF  .~.~.~> Slide or rotor {2}
257  DF  .~.~.~> Timer operated impacting device latch
258  DF  .~.~.~> Externally released latch {2}

DEFINITION

Classification: 102/222

Blocking or interrupting type:

(under subclass 221) Subject matter wherein ignition requires the cooperation of at least two elements, and wherein the arming means includes movable means which selectively either prevents or permits cooperation of the two elements.